The Effects of Cool Roofing

Foam Roof Installation

There’s a lot of chatter in recent years about foam roof installation otherwise known as white or “cool” roofing options. Basically the thought is that dark colors, roofs constructed of asphalt or tar materials, take in heat, which increases the utility bills for the property they are installed on. Whereas white, or light colored materials which reflect the heat.

The main point being that lighter colored materials, like white spray foam, will help the occupants save money over time.  Not to mention reduced energy costs. The government has encouraged property owners to go with foam roof installation on their properties. They are also suggesting that all future roofing be lighter or white in color.

One Thing That Is a Factor in Foam Roof Installation… Where Your Property is Located.

In areas like Phoenix or Tucson, for example, where AC systems are used for a great portion of a calendar year, it would seem like an easy choice. And, there are some states, like California, that are forcing commercial buildings to go with a foam roof installation.

But, in cooler areas of the country, like Minneapolis or Chicago, it’s a little more complicated. There are some studies that show in the colder winter months, white roofing might actually increase heating expenses. The debate is about how much it actually does. The question is whether the decrease in cooling costs in the summer months will compensate for a possible increase in heating costs in the winter. Studies have disputed this, showing that the energy savings through air conditioning bills outweighs any negatives, even in colder climates like Chicago.

The other main factor is how cool roofing is, or can have on slowing down the effects of global warming. One major study found that the heat reflected off of white, cool roofing does affect climate change by putting more heat into the atmosphere, which absorbs more carbon emissions. Past studies had made claims that white roofing have a cooling effect, not a warming one.

Foam Roof Installation and The Environment

Know The Factors

So, you should know all the factors involved in the particular area where you reside before making any decisions. You should way all the pros and cons of your options and choose the one that best fits your locality and budget. There are several types of reflective materials to make your choice from.

You could also benefit from some local financial incentives from your governing bodies. There are states that offer their citizens rebates if they install white, cool roofing. Also incentives may be being offered by the various utilities in your city, county or state. On a roof with a dark surface, the temperature can get as hot as 180 degrees. on a warm sunny day. If your roof heats up like this, it will impact your property’s interior, which might be great in Chicago during a winter months. However this is not the case in Arizona during the summer, as heat will get inside and rise. You’ll need to use more air conditioning as the temperature inside increases as a result.

Roof Color & Heat Islands

Also, a dark roof will disperse heat back into the air, increasing a city’s heat island affect. The cumulative effect is  the planet’s solar reflectance by absorbing the heat from the sun and its rays. Scientists believe that this is having an impact on global warming and climate change.

This has created a movement towards government agencies recommending white, reflective roofing. For reflecting heat, white roofs are a great solutions due to their smooth exterior. Several major tests that have been completed have shown that dark materials, like shingles, asphalt and tar, only reflect 5-10% of the sun’s rays. This also means temperatures rise 70 to 90 degrees more than the air around them. White roofing materials, on the other hand, will reflect as much as 25% of the suns rays with a 50 to 70 degree difference in the surrounding air. Some materials will reflect as much as 35% and only 60 degree differences.

Mikku and Sons Roofing (623) 465-1068 provides quality foam roof repair, foam roof installation, foam roof replacement and other roof repair services to the surrounding Phoenix area communities. We’ve been a reputable, quality roofing contractor since 2001. Call us when you have any questions about installing or repairing a foam roof on your property.

Emergency Roof Repair Contractors

Mikku and Sons Roofing has been helping residents throughout Phoenix since 2001. Our experienced and friendly crew members can inspect your roof and help you get it ready for the monsoon season to help you reduce the risk of damage. But, if your roof does have damage due to monsoon storms, we are ready to help you with quick and complete roof repair. We have experience in all types of roofs, including tile, shingle and flat roofs on both personal residences and commercial property. We are fully licensed and insured and make it our mission to provide quality workmanships and exceptional service.

Call us today at (623) 465-1068 to find out how we can help you prepare your roof for the coming monsoon season or to repair it after a storm.

Request Your Free Estimate

Options For A Flat Roof

Options For A Flat Roof

More Slope Than Flat

Flat roof systems are more low-slope than completely flat. They have just enough slope to make water move toward gutter and drains to keep it from ponding on the roof. There are several options for a flat roof available when you’re deciding on whether to replace your roof.

What we feel is the best solution, sprayed-on polyurethane foam, should be used more than it is and pushed more by roofers in the industry. There are several options if you’ve decided to replace your flat roof.

Here Are 5 Options for a Flat Roof


Modified Bitumen

This material is rolled on top of your roof’s surface in a single ply. Most previous installations were completed by placing it on the roof and then using a blowtorch to heat it. This poses some risks, so newer materials have been created that stick to the roof after they are peeled off, making it safer. It’s good for the environment due to its ability to reflect the heat and rays from the sun, which will lower your cooling expenses. However, it does have a major negative feature – walking on it can tear the material and cause scuffing.


Built Up Roofing (BUR)

This material is very affordable, which entices homeowners to use it often as everyone likes to save money. It has a nice, attractive look which usually has gravel on top covering the material. Its constructed of several layers, so it provides more than adequate insulation for your home. But, due to these multiple layers, it weighs more tan other flat systems,. which means you may have to make some structural additions to your framing or structure in order to support it, meaning you’ll have additional expense when choosing to install it. One other drawback is you should not be occupying the property while its being installed, interrupting your families routine and schedule. There is plenty of info to be found online regarding BUR roofing if you need it.


Sprayed-on Roof Coatings

Silicone is the material most often used for sprayed-on applications. And, because its sprayed onto the roof, it is seamless, making it work great in resisting moisture and deflecting the heat from the sun. Since it reflects the sun’s heat and rays, it lowers your utility costs, saving you money. Another big benefit is its contribution to the environment because its applied directly on top of the old system. No need for the occupants to be removed during installation and no need to tear off the old roofing and dispose of it before its applied. There are a few negatives, though – the biggest one being its price, as its more expensive than the other flat options. However, that should be expected from something of high quality with so many positives. Depending on your roof’s configuration and your location, silicone roofing will usually be the most expensive option to choose from.


Single Ply EPDM

It’s similar to PVC, because of its single ply, but the main material is not plastic, but rubber. Its extremely durable, but it has a few drawbacks. Adhesives are used to close the seams, which can make them vulnerable to the elements over time, letting moisture get through and causing maintenance and repair issues. Asa result, you will have to pay more attention to routine maintenance and minor repairs than some of your other options.



This material is very reflective and durable.  It is extremely water resistant, keeping moisture from pooling.  Lastly, the installation process is simple, making it one of the best choices for your flat roof. It may sound like it is similar to spray applied coatings because they do have a lot in common. The biggest difference from other materials, including sprayed-on, is that the seams can lead to failing. Glue or tape is used to connect the seams, and they will deteriorate over time.  This allows more water over time to enter your home than a seamless system would.

Emergency Roof Repair Contractors

Mikku and Sons Roofing has been helping residents throughout Phoenix since 2001. Our experienced and friendly crew members can inspect your roof and help you get it ready for the monsoon season to help you reduce the risk of damage. But, if your roof does have damage due to monsoon storms, we are ready to help you with quick and complete roof repair. We have experience in all types of roofs, including tile, shingle and flat roofs on both personal residences and commercial property. We are fully licensed and insured and make it our mission to provide quality workmanships and exceptional service.

Call us today at (623) 465-1068 to find out how we can help you prepare your roof for the coming monsoon season or to repair it after a storm.

Request Your Free Estimate

Inspecting a Flat Roof

Inspecting a Flat Roof

Leaks Can Be Devastating

When you’re buying a new property, you have a lot to think about to prepare for your new home. Inspecting a flat roof before following through with the purchase is extremely important. Even though you may have owned a property with a flat roof in the past, it is still a good idea to inspect the roof and understand how to maintain it. Leaks can be devastating and expensive if they’re not repaired quickly after they’re found.

Serious Flat Roofing Problems To Look For



These are areas that look like bubbles or where the surface is uneven. There could be moisture trapped underneath the membrane, but more often, its a result of improper installation. Ask a roofing contractor if a particular blister on your roof will cause bigger problems.



This could mean their’s a poor structure or bad insulation installation. Even if the membrane was installed correctly, shifting or movement inside could cause a split in the flat roof’s membrane. If this is the case, the flashing in this area will usually fail too.



If the membrane looks like its shifted from it’s original position, it could be due to the slope of the roof being too steep for the type of membrane installed, poor adhesion, or thermal issues. This can contribute to ridges, splits and other roof problems.


Obvious Damage

When inspecting a flat roof and find that it has been punctured or shows other signs of obvious damage, you should bring it to the attention of your professional roofing contractor.



Some membranes have a tendency to shrink. You will see this as an issue if membrane seams look like they’re pulling against a penetration like a plumbing vent pipe, or if the membrane can be pulled away from the eave’s edges. You may also see “bridging” at angle changes such as parapet walls, against other walls, etc.

Things to Look When Inspecting A Flat Roof

On the Roof

If you don’t see any discolored spots or any other signs leaking inside, it is still a smart choice to have the roof inspected. There could be cracks beginning to form that will become bigger issues down the road. You’ll want to get these problems fixed before they cause any internal damage to the home.

One thing we would recommend is walking the roof to do a simple visual inspection. To be safe, make sure to be aware of where you are on the roof and never walk backwards. Make note of all the penetrations and don’t put any weight on any skylight covers, they’re not built to withstand significant weight. While you’re walking the roof, make a note of how it feels under your feet. If it feels weak, get off the roof safely and as quickly as possible and call a professional roofing contractor.

A leak on the roof could soak the insulation under the membrane. If it feels a spongy underneath you, you’ll also want to refer to a roofing contractor. This is also the case if you notice any water coming out of any part of the membrane.

Inspect Penetrations and their Seals

Next, you will want to look at all the penetrations and seals. A large amount of leaks start at penetrations and seals, which make up a very small percentage of the total area of the flat roof. Penetrations, things like pipes and flashings that ‘penetrate’ the roof, are usually enclosed by flashings made from some form of sheet metal. Inspect around these penetrations for deterioration and cracks. This cracking might not seem to be a big problem, but as moisture gets in, it will expand the crack until its large enough to cause a big leak. Seals are where two waterproof materials overlap, coming together in the same spot. Inspect these seals and make sure they’re smooth and still fully adhering.

In the Interior

You’ll want to check each individual room in the property carefully. Check the ceilings for any stains or discoloration. If the roof is leaking, you’ll find a dark colored ring forming around the water-saturated spot. If you see this, you should contact an experienced roofing contractor before moving ahead with your purchase.

Damage from a leak in one area doesn’t necessarily mean that the leak is located directly above it. Flat roofing systems have layers that might direct the moisture to other areas in the home, many times far away from the source. The damage could also be from a plumbing or AC leak or, possibly some other source other than your roof itself. Its also a possibility that the leak that caused the stain was previously repaired but the discoloration on the ceiling was not. However, to be on the safe side, the best thing to do is to hire a professional flat roofing contractor to locate the source of any leaks.

To Conclude

If you’ve finished your roof inspection and decide you need to hire an experienced commercial roofing contractor, make sure to get several bids to ensure that you thoroughly understand what really needs to be remedied. Also, if you get multiple bids, you’re more likely to pay a lower price for your roof repair. Your roofing contractor might also be able to help you extend your roof’s lifespan and give you instructions on what you can do for routine maintenance throughout the year.

Emergency Roof Repair Contractors

Mikku and Sons Roofing has been helping residents throughout Phoenix since 2001. Our experienced and friendly crew members can inspect your roof and help you get it ready for the monsoon season to help you reduce the risk of damage. But, if your roof does have damage due to monsoon storms, we are ready to help you with quick and complete roof repair. We have experience in all types of roofs, including tile, shingle and flat roofs on both personal residences and commercial property. We are fully licensed and insured and make it our mission to provide quality workmanships and exceptional service.

Call us today at (623) 465-1068 to find out how we can help you prepare your roof for the coming monsoon season or to repair it after a storm.

Request Your Free Estimate

Common Flat Roof Issues

Common Flat Roof Issues

Be Aware

Flat roofs have built-in design and installation factors that can often lead to performance problems and a shorter life span than you might expect.  There are several common flat roof issues to be aware of.

Top 3 Common Flat Roof Issues



This is the most frequently occurring problem on any kind of a residential flat roof. It usually happens due to ponding water that stands longer than 48 hours, after the most recent rain showers. Usually, moisture gets through at the seams or flashings. It can also come from clogged drains, chimneys, skylights, parapets and other types of penetrations on the roof. Its less common to have a leak from some sort of puncture. If moisture gets under the membrane and into the sheathing, mold and rot can start to form. This is especially likely in areas with lots of rain and severe storm frequency.


Shrinking and Deteriorating Materials

One of the most common problems for EPDM membranes is shrinkage. When rubber shrinks, it can pull down parapet walls, drip edges or even a chimney. This is more probable on a larger building, and on a property where the membrane wasn’t properly attached or installed.


Damage Caused by Foot Traffic

Another issue, especially for flat roof decking and commercial buildings is heavy foot traffic. Maintenance personnel (mainly HVAC contractors) and other random visitors going out on the roof, dropping tools, walking over fasteners, thus puncturing the membrane and causing other damages that need to be repaired.

When Should You Replace Your Flat Roof?

Replacing your flat roof can be a costly and time consuming project, and it should, in most instances, be your last resort. Just because your roof is leaking in a few spots doesn’t mean it necessarily must be replaced.

Two Scenarios That Warrant A New Install

The Age of the Roof
When the original material has gotten to the end of its lifespan, your best option is replacing it. Depending on the type of material your roof is made of, your local weather situation, as well as how you’re keeping up with routine maintenance, this life-cycle may vary, as we have discussed above. Since EPDM has seams that are prone to allowing moisture to get through, they will have a lot of issues in locations that have heavy and frequent rain storms. TPO may not live up to its fullest lifespan in geographic locations with high heat and drastic temperature fluctuations.

Poor and Faulty Installation
Unfortunately, installation issues happen way too much. This is the biggest source of all the other issues, including leaks. If you’re constantly fixing a fairly new roof, it probably indicates that it was not installed properly. Some of these can be rectified by a professional roof repair contractor, but their will be some that can’t be. This is why getting a thorough, professional inspection with an experienced roofer is so important.

If installation problems can’t be fixed, the best option will be replacing the faulty roof. Otherwise, you’ll just keep dumping more and more money into a roof that will never perform as its supposed to. If you find that there is wet insulation, it cannot dry out on its own and can cause mold issues and structural damage that will be much more expensive to fix than putting on a new roof, or replacing a large portion of the original one.

If you can afford it, choose a premium material like PVC. While its more expensive than other single ply choices, once you install it, you won’t have to worry about leaks and other problems again for a long time. PVC has hot air-welded seams that don’t come apart, and will remain resistant to water. It’s also an Energy Star rated, cool material, that reflects the sun’s heat, which will save you a lot of money on energy costs as you live in the property.

An Inspection is the Most Important First Step

To find out whether you should do a roof leak repair or replace it with a new membrane, find a professional, experienced roofing contractor to perform a thorough inspection. Be sure you hire an experienced pro, because a plain general contractor or an asphalt shingles expert won’tt know all the little details and complexities of these flat roof materials. They might give you poor recommendations that will cost you even more money and time to fix in the future.

During the inspection, your roofing contractor should include checking:

  • Seams
  • Flashings
  • Attachment points
  • Check for cracks at joints and corners, around chimneys and ventilation slits.
  • Assess any damage: deterioration, punctures, aging, leakage, ponding water, etc

It’s also very important that they do a test-cut (through the material to check what is under the top layer). A lot of times, mold and rotted sheathing underneath the top layer is not visible on the surface.

Emergency Roof Repair Contractors

Mikku and Sons Roofing has been helping residents throughout Phoenix since 2001. Our experienced and friendly crew members can inspect your roof and help you get it ready for the monsoon season to help you reduce the risk of damage. But, if your roof does have damage due to monsoon storms, we are ready to help you with quick and complete roof repair. We have experience in all types of roofs, including tile, shingle and flat roofs on both personal residences and commercial property. We are fully licensed and insured and make it our mission to provide quality workmanships and exceptional service.

Call us today at (623) 465-1068 to find out how we can help you prepare your roof for the coming monsoon season or to repair it after a storm.

Request Your Free Estimate

Options For Flat Roofs

Options For Flat Roofs

Correct Flat Roof Repair Installation

Roofing systems take abuse and have to be maintained. Pitched roofs are fundamentally built to shed water and keep snow from piling up. As a result, sloped roofs that utilize asphalt shingles, tiles, or wood shakes are designed to work similar to fish scales – overlapping each other to shed the water and snow.  Flat surfaces require different coverings and this article will discuss three options for flat roofs.

Flat roofing systems aren’t built that way. With extremely low slopes (between 1/4″ to 1/2″ per foot, if installed the right way), flat roofs don’t shed water easily. Flat roofing systems are built as a monolithic roof surface and will have times where water is pooling and standing.  There are 3 main options for flat roofs including Built-Up Roofing (BUR), Modified Bitumen Roofing, and Membrane or ‘Single-Ply’ Roofing (such as EPDM). EPDM is the latest flat roof technology (around 55 years) and BUR is the oldest (about 120 years). Modified Bitumen is between the others (+/- 60 years). Here are the pluses and minuses of each flat roofing system.


Built-Up Roofing Systems

Built-up roofing (BUR) was the most commonly installed type of flat roof until single-ply roofing and modified Bitumen came along. BUR uses tar and gravel for a watertight layer on top of the roof. Some of its biggest benefits include longevity, the thick coverage of the roof deck and high resistance to damage. It’s a costly choice for a residential property, and some of the odors that come with tar and gravel can be bothersome. Here are some additional pluses and minuses of built-up roofing:


  • It can last ten to fifteen years with routine maintenance and repair.
  • Several types exist — smooth asphalt built-up, ballasted asphalt built-up and cold built-up
  • Great protection against rain, UV rays, and severe weather.
  • Its low maintenance and costs little to maintain throughout its lifespan.
  • You can remove layers when repairing or resurfacing the roof.
  • The gravel in built-up roofing makes it resistant to normal foot traffic.


  • Installation is lengthy due to involving a number of materials — asphalt, coal, tar, gravel, etc.
  • Potentially hazardous odors, fumes and vapors are emitted while being installed.
  • It has high initial installation costs.
  • It’s susceptible to high winds and unusually high levels of moisture.
  • It’s heavy, which can require roof joists be strengthened before it’s installed.
  • It can be difficult to find the source of a leak. At times, it requires dismantling the whole roof.
  • It’s not flexible in colder climates and is prone to damage as a result.

Modified Bitumen Systems

It didn’t take long for the public to move away from the mess, heat, and odors of installing a BUR roof. But, for a long time it was the only option. In the early 1960’s a new technology was developed – modified bitumen roofing (MBR). It leveraged the proven performance of BUR and added roof wear layers or cap sheets that were polymer reinforced for strength and durability.


  • Factory applied mineral surfacing that makes the application consistent.
  • Overlapping rolls create big, seamless areas.
  • Easier to install than BUR which saves on labor costs and reduces installation mistakes.
  • Polymer reinforced roof wear layer gives better elasticity and flexibility in colder temperatures.
  • There are several application methods – hot applied, torch applied, cold applied, self-adhered.
  • Its low in maintenance and durable.
  • Its inexpensive compared to other systems.
  • Recyclable materials at end of its lifespan.
  • More durable than BUR with installation thats similar to EPDM.


  • Some application techniques require an open flame/torch which requires special safety considerations.
  • Overlapping joints must be adhered correctly to prevent leaking.

Single Ply Membrane Systems

There are a few types of rubber/polymer membrane roofing systems – PVC, Neoprene, EPDM and several others. EPDM (Ethylene Propylene Diene Monomer) is used the most, especially for residential projects.

EPDM is constructed of recycled rubber materials, making it environmentally friendly. It helps to insulate your roof and attic. In addition to covering your roof, it will bring down utility costs and make it economically viable as well. It comes in a large variety of textures and colors.


  • EPDM roofing is waterproof.
  • You can encase your whole roof.
  • Repairs are pretty simple and inexpensive; property owners can do some simple repairs themselves.
  • They last 30 to 50 years and hold up against the elements and fire well.
  • Its lightweight so the roof deck doesn’t need to be reinforced.
  • Leaks are very rare.
  • Its durable — it doesn’t scratch or scuff easily — and repairs are easily made.


  • Must be installed by a professional roofing contractor who knows how to properly install it. It can be somewhat expensive.
  • Exterior features such as pipes, HVAC systems and chimneys, can pose a risk to your EPDM roofing and cause leaks if flashing is not properly installed around them.
  • It can be damaged by branches, foot traffic or storm damage. You need to be more careful when walking on a membrane roof.

Emergency Roof Repair Contractors

Mikku and Sons Roofing has been helping residents throughout Phoenix since 2001. Our experienced and friendly crew members can inspect your roof and help you get it ready for the monsoon season to help you reduce the risk of damage. If your roof has damage from monsoon storms, we are ready to help you with quick and complete roof repair. We have experience in all types of commercial and residential roofs, including tile, shingle and flat roofs. We are fully licensed and insured and make it our mission to provide quality workmanships and exceptional service.

Call us today at (623) 465-1068 to find out how we can help you prepare your roof for the coming monsoon season or to repair it after a storm.

Request Your Free Estimate

Flat Roof Dont’s

Flat Roof Don’ts

Things to Avoid With Your Flat Roof

Flat roof don’ts are important to consider, and calling a contractor is likely in your best interest.  There have been a lot of flat roofs that have been lifted up or completely blown off buildings here in the Phoenix area due to monsoon storms kicking up severe, heavy wind gusts. Fortunately, most of the time, injuries are avoided, but the peeled away roofs are a reminder that flat roofing on a home is no place for amateurs.

If the homeowner or property manager happened to be up on the roof to do something they thought was simple, like checking the drains and gutters for debris, when the monsoon storm hit, as an example, much worse results would have occurred and made for major, tragic headlines. Unnecessary rooftop visits are just one practice to avoid with residential flat roofing.

Don’t Do These Things With Your Flat Roof


Don’t Go On Your Roof

Rooftop visits that aren’t necessary are just one practice to avoid with flat roofing systems. Some homeowners think of their roof as their personal property, the same as you might look at something you own like a guard dog. But, you know guard dogs can sometimes bite the hand that feeds them. Your roof should be treated with the same kind of caution – it will be there, inviting you to climb up on top of it, but roofs can be very unpredictable. The less time you spend on your roof, the safer you are. Leave inspections and repairs to the experienced professionals like Mikku and Sons Roofing. We have the trained crews, specialized equipment and certified training to walk your residential flat roof safely and securely.


Don’t Put Off Repairs

Another poor behavior to avoid is procrastinating your roof repairs. Ignoring the trouble signs of a potential leak – ponding, musty odors in your interior, ceilings that have stains, or moisture damaged roof insulation – will only cause your eventual repair to be more costly. If your home has any of these signs pointing to a leak, get that small repair made as fast as you possibly can, before it turns into a major roof replacement project. You can also avoid damage to your insulation and roof decking with quick attention to repairs. This quick repair strategy will always save you money in the long run.


Don’t Be a Do-It-Yourselfer

Some homeowners think they can do minor roof repairs themselves. You, or a property manager, might think of yourselves as some sort of “handyman”. Why would you risk your health, your job and your well being by going up on a roof to try to make an amateur repair? The do-it-yourself approach might work for a while to clear a clogged scupper or something simple, but for most residential flat roof repair, you need the guidance and experience of a professional roofing contractor.

Some other flat roof don’ts to consider:

  • Differing roofs require different materials.
  • A common issue is someone using chemical solvents to clean or seal seams that were originally sealed with heat.
  • Not only can amateurs use the wrong roof surfacing materials, they can unknowingly put the wrong materials together at seams and flashing, causing more problems than they solve.

Emergency Roof Repair Contractors

Mikku and Sons Roofing has been helping residents throughout Phoenix since 2001. Our experienced and friendly crew members can inspect your roof and help you get it ready for the monsoon season to help you reduce the risk of damage. If your roof has damage from monsoon storms, we are ready to help you with quick and complete roof repair. We have experience in all types of commercial and residential roofs, including tile, shingle and flat roofs. We are fully licensed and insured and make it our mission to provide quality workmanships and exceptional service.

Call us today at (623) 465-1068 to find out how we can help you prepare your roof for the coming monsoon season or to repair it after a storm.

Request Your Free Estimate

Spray Foam Roofing Myths

Foam Roof Installation Contractors

In the Desert Southwest, spray foam roofing is a great solution for flat or low sloped roofs. But, the experts at Mikku and Sons Roofing (Phoenix roofing contractors since 2001 and extensively using spray foam) have found a lot myths and misconceptions about this roofing choice that a lot of their customers have been concerned about before taking advantage of this option.

In order to show consumers the value and versatility of spray foam, Mikku and Sons wants to shed light on several myths:

#1: SPF costs too much.
Spray foam roofing is very affordable compared to other options. The cost is about the same as a single layer of asphalt shingles. As a matter of fact, with the rising cost of oil, the expense of asphalt shingles (an oil-based product) is going up, while spray foam pricing has remained fairly constant.

#2: SPF isn’t durable.
Research has shown that properly applied roofing foam can last as long as 50 years when applied correctly and maintained by re-coating it on a regular basis. There are foam roofs that were applied over 40 years ago that are still holding up well.

#3: SPF is too toxic.
Spray polyurethane foam is just a type of plastic that has been altered slightly and has been used to make the millions of bottles that are used in the food manufacturing industry — bottles that are used for bottled  water, soft drinks, ketchup, mustard, mayo and hundreds, maybe thousands of other products that are consumed in households throughout our country every day.

Foam Roof Repair Companies

#4: SPF isn’t a good insulator.
Foam roofing is a great option for insulating your property or business from heat, especially on flat or slightly sloped roofs. The closed cell structure gives SPF one of the highest R-Values (thermal resistance) of all roofing materials that can be used on your property, and it makes it very moisture resistant as well as being highly fire resistant, which is great for insurance rates.

#5: SPF is not energy efficient.
Texas A&M University studied the energy use of its campus buildings before and after they applied Spray foam on its building’s roofing systems. They studied more than eight million square feet of SPF roofing on their campus, and found that their energy savings completely paid for the expense of Texas A&M’s SPF roof systems in three to four years.

Mikku and Sons Roofing (623) 465-1068 provides quality Phoenix roof repair services and has been a Phoenix roofing contractor since 2001. If you’re looking for a professional, experienced roofing contractor to get good advice about how a spray foam roof could benefit your property, give us a call.

Mikku and Sons Roofing

Should You Do a Flat Roof?

Flat Roof Installation Contractor

Flat Roofs

When people imagine a house, many picture a building with a pitched or A-shaped roof. However, this is far from the only option available for your home or business. One style to consider is a flat roof, a horizontal roof that is usually tilted at a very low angle.

At Mikku and Sons Roofing we're ready to construct and repair a wide variety of roofs. To learn more about the services we offer, call our Phoenix roofing crew at 623-465-1068.

Why Get a Flat Roof?

People choose flat roofs for a variety of reasons. Some simply like the way they give a home a more modern look. Others appreciate advantages such as:

  • Low cost – Flat roofs are generally easier to design and construct that angled roofs. Depending on the materials you use, they can cost significantly less money to build.
  • Accessibility – It is much easier to access a flat roof for maintenance or repairs. Some people with flat roofs even use them for gardens or other projects.

However, it is important to note that there are also disadvantages to living in a building with a flat roof. For example, these roofs require careful maintenance, or they can be damaged by weather and gradual wear and tear. They can also be prone to water pooling and flooding.

Before choosing a roof design for your home, it is important to be fully informed about your options. Our Austin roofing specialists can help you review your choices when designing a home or constructing a new roof.

Built-up Roof Membrane (BUR):

  • Assembled in place using multiple plies of asphalt- impregnated felt bedded in bitumen.
  • Asphalt or coal-tar is applied hot in order to merge with the saturant bitumens in the felt and form a single-piece membrane.
  • The felt is laminated in overlapping layers to form a membrane that is two to four plies thick.
  • The membrane is protected from sunlight and physical wear by applying a layer of aggregate (such as crushed stone or other mineral granules) embedded in the surface ply.

Foam Roofing

Foam roofing is the most energy-efficient roofing material available – over 500% more efficient than conventional roofs. It’s the first intelligent roofing technology for flat and low-sloped roofs, combining insulation and roofing into one material. That means no roofing seams or multiple layers – eliminating the expanding and contracting and separating that allows water and microbes to seep in and damage your roof.

Each Mikku and Sons foam roof is custom installed. It’s sprayed on as a liquid mixture, and within a few seconds expands up to 30 times its original volume into a watertight, seamless solid that custom forms to the roofing substrate. Just look at the advantages of an Armstrong Foam roof:

  • Tough, seamless construction
  • Can be sprayed onto almost any surface including irregularly shaped roofs and uneven surfaces
  • Tenacious adhesion – demonstrated in the most recent Florida hurricanes
  • Moisture resistant – even when the membrane coating is damaged
  • Inch-per-inch, the highest energy efficient roofing material available
  • Extremely strong – yet ultra lightweight
  • Proven longevity classifies it as a sustainable low-slope roofing system
  • In most cases requires only periodic recoating for decades of service

Flat Roof Installation Companies

Elastomeric/Plastomeric Roof Membrane:

  • Sheet materials applied to the roof in a single layer.
  • They require less on-site labor than built-up roofing and are usually more elastic and, therefore, less prone to cracking and tearing.
  • They may be affixed to the roof with adhesives, by the weight of a gravel ballast, by fasteners concealed in the seams between sheets, or with mechanical fasteners that do not penetrate the membrane.
  • Some types of elastomeric/plastomeric roof membranes include the following:

Neoprene (polychloroprene):

  • A high-performance synthetic rubber compound applied in sheets ranging from 0.030 to 0.120 inches thick and joined at the seams with an adhesive.
  • Vulnerable to attack by ultraviolet light; therefore, it is usually coated with a protective layer of chlorosulfonated polyethylene.
  • Vulnerable to aromatic solvents and strong oxidizing chemical.
  • It may be fully adhered to the roof deck or partially adhered, with aggregate ballast to prevent wind uplift.

EPDM (ethylene propylene diene monomer):

    • The most widely used material for single-ply roof membranes.
    • A synthetic rubber manufactured in sheets ranging from 0.030 to 0.060 inches thick and joined at the seams with an adhesive.
    • Vulnerable to petroleum products and plastic roofing cement.
    • It may be fully or partially adhered, or used in a protected membrane roof.

PVC (polyvinyl chloride):

  • A thermoplastic compound commonly known as vinyl.
  • Relatively inexpensive.
  • PVC sheets for roofing range from 0.032 to 0.060 inches thick and are joined at the seams either by solvent welding or hot air welding.
  • Vulnerable to ultraviolet radiation, petroleum products, and coal tar.
  • It may be fully or partially adhered, or used as a protected membrane.

Chlorinated polyethylene and chlorosulfonated polyethylene sheets:

    • Vulnerable to petroleum products.
    • Not compatible with PVC.
    • Highly resistant to ultraviolet deterioration and can be manufactured in light, heat-reflective colors.
    • Used on roofs where aggregate ballasting is unacceptable for reasons of appearance or excessive slope.

Polymer-modified bitumens

  • Vulnerable to petroleum products, hydro-carbons, and some chemicals.
  • Formed into composite sheets with various other materials.
  • Some are intended to be laid loose, others to be adhered to the roof deck or insulation.

Fluid-applied Roof Membrane

    • Used primarily for domes, vaults and other complex shapes that are difficult to roof by conventional means.
    • Applied usually in several coats using a roller or spray gun. When it cures, it forms a rubbery membrane.

Foam Roof Replacement Contractors

Factors Contributing to Flat Roof Deterioration


  • Hot sunshine on a roof causes the volatile ingredients of tar or asphalt to evaporate.
  • The asphalt oxidizes and becomes brittle.
  • The roof mat eventually loses its elasticity, the surface coating becomes checked and flakes off, exposing the felt below.


  • Water can seep into a dry roof through cracks and cause a leak.
  • This moisture can turn to ice in freezing temperatures and can cause the roof to tear or heave.


  • A strong wind can drive rain into defective joints in the mat or parapet, can cause the roof to tear at loose seams and can cause the roof structure to sway.

Temperature Changes

  • Expansion and contraction place strains both on the roof structure (deck and walls) and strain the flashings. These strains can cause the roof mat to tear and mortar in coping joints to crack, providing sources for water entry.


  • As walls settle, extra strains may be exerted on flashings, or the roof may settle below the level of the drain pipe. This will either cause a backup of flood water, or a leak through the crack around the drain.

Outside Interference

  • Roof mats are not designed for extra accessories such as signs and electric wires, nor are they intended for regular foot traffic. Anchorage planks are spiked or lagged to the deck, piercing both the mat and the deck, causing serious damage.
  • Pollutants, acids and saturated animal fats can potentially damage membrane roofing. Protection from these is provided through coatings and/or ballast covering.

If you need the advice of a professional flat roof repair contractor, give Mikku and Sons Roofing a call at 623-465-1068.


Should You Install a Foam Roof?

Flat Roof Installation

Flat Roofing Comparison

Usually, a polyurethane foam roof costs about equal to a Built Up Roof (BUR) with underlying insulation. But, foam roofs are unique because they’re the only roof type that both insulates and protects against leaks with a single monolithic barrier.

Different Materials

There are a lot of flat roofing materials, but all are not equal in quality. An EPDM (rubber roof) or single ply roof, sealed either by tars or adhesives are not as high quality as a typical BUR roof. The reason is they usually last less than 10 years, while a higher quality BUR roof may last a lot more than 10 years. Usually, a BUR roof is built with a few semi-flexible membrane layers, and then water-proofed with water resistant modified bitumen.

Flat Roof Installers

Remember, coal tars are a known carcinogen (not as severe as asbestos – otherwise, this would be more widely known). Modified bitumen, however, comes from oils, refined at much lower temperatures than coal tar, and is a much safer substance. The fluctuating prices in the cost of a barrel of oil gets passed on to the roofing industry. As the costs of asphalt roofing materials continue to increase, and the cost of a high quality polyurethane foam roof remains more steady, that makes SPF or foam roofing more affordable for consumers.

Comparing Costs

Cost, of course, can vary due to a lot of factors, like geographic location, and size and type of the project. Prices might be estimated anywhere between $3-$12 per square foot, and this can be effected by several other factors – the quality of the materials used, the labor costs to install these materials, and any associated warranty, contractor insurance, or bonding costs which will get passed on to the customer.

Flat Roof Installation Contractors

Initial Cost Factors:

  • Roof Size: for example, large projects are often cheaper per square foot due to installation efficiencies gained with economies of scale.
  • Roof Penetrations and obstructions: if your roof has a lot of obstructions – skylights, pipes, and AC equipment for example, you can expect higher installation costs due to increased labor requirements.
  • Materials Used: EPDM and Single ply roofs are cheaper materials that won’t last as long. Higher quality roofing such as polyurethane foam may cost a little more, but it will insulate more efficiently and could last the life of the building. In contrast, a roof, such as Tar & Gravel, with insulation will expense about the same as an SPF roof.
  • Location: Is your property in a convenient local location, or will your contractor’s crews have to drive a significant distance to reach your property?
  • Condition of Existing Substrate & Roof: Can the current roof membrane be re-used, or does it need to be torn off? Is asbestos or other harmful substances under your roof membrane that have to be dealt with? Is there dry-rot or other failing materials. Do drains, vents, skylights or other roof penetrations need to be replaced or repaired?
  • Are you thinking of installing solar power or replace your vents & drains, etc? It’s a lot more cost effective to do all of this at once. What if if your solar power installers caused a leak in your roof, and neither contractor (roofing or solar) wanted to fix the issue because they each blamed the other. If you’re thinking of installing solar, now would be a good time to coordinate the two installations simultaneously.

Long Term Considerations

If you’re going to install a roof, it’s good to think about the long term cost impact. If you have decided to install a foam roof, the insulation factor can pay off big in the long run. Also, think about adding cool roof coatings; just by changing the color of a roof to something reflective can lower summer cooling bills by 30% or more. Medium Density Sprayed Polyurethane Foam Roofing conforms to a roofs corners and angles and usually has an R-Value around 6 to 8 per inch of thickness. In layman’s terms, one inch of foam is as effective as 6 to 8 inches of solid wood.

In reality, due to things like vapor trapping (foam forms a barrier), and the density of foam (it is light, but heavier than air–of course), foam can be 4 times more effective than fiberglass. If you have lived in an older, poorly insulated home, you know that heating and cooling bills can really get out of control with a poor insulation. This is just one final cost factor which should be considered when you’re comparing an insulated roof like SPF with other roofing materials, like EPDM, Single Ply, or BUR, with no insulation.


Foam roofing is a great choice here in Arizona for covering a flat roof due to its great insulating factors and its great looks. If you need help deciding whether a foam roof is right for you, please give us, Mikku and Sons Roofing LLC, a call at 623-465-1068. We’re a foam roofing installation contractor and can lay out all your options, helping you choose the one that fits your budget and your property.


6 Tips For Flat Roof Maintenance

Flat Roof Repair Contractors

Some maintenance and basic rules for taking care of a flat roof, as in do's and dont's, are common sense, but you would be surprised what some flat roof owners do to jeopardize their roof or let happen to their roof. The worst thing you can do is to neglect it, because small problems turn into big issues rather quickly. Depending on how your roof is used and what type of roofing material you have will depend on how much time and effort you must spend on maintaining your roof. But, either way, these are some tips or rules that flat roof owners, whether residential or commercial, should keep in mind to help take care of your roof so it can help you take care of and protect your home or business.

1. Keep the roof clean of debris, especially if you have trees around your roof, clean during and after the fall season. Here in Arizona, with our often times violent monsoon storms, you should always check and inspect your roof after we've had one. Strong winds can throw debris up on your roof, even from other properties, and unless you get on a ladder and get up to inspect it, you wouldn't even know some debris may be up there causing damage. Always keep your flat roof clear of organic debris that could cause punctures or residual damage.

2. Make sure any equipment that must be attached to roof is properly attached without causing punctures to roof materials. It is good for some equipment to be mounted on top of a platform of some kind that can limit damages to the roof materials. If your material uses fasteners, make sure they are tight and secure.

Flat Roof Repair Companies

3. Check draining systems and clean out any debris. Make sure you have adequate draining for your roof, if you notice a lot of ponding water you may need better drainage, clean them, or possibly have an area that needs something to stop ponding water. Some spots that have ponding water need leveling to help the water flow to the drain system. Ponding water can cause a flat roof to deteriorate quickly, so once its detected, remove it as quickly as possible and make sure the drain systems keep it from re-occurring.

4. Don't cause undue stress to the roof. Flat roofs will have issues with pressure from too much weight, such as too much heavy equipment for the way the structure of the roof was built, snow and ice weight, water weight or even random things on the roof that shouldn't be there. You should have some sort of documentation from the builders and designers that specifies the amount of weight your flat roof can withstand. If there is an area that is not supported well and  too much weight exists there, the roof can eventually collapse, causing all kinds of damage and even jeopardize your families well being.

Flat Roof Installation

5. Do not neglect your flat roof. If you haven't had it inspected for some time, or have put off repairs that need to be done for some time, do not wait. Call a professional flat roof contractor to inspect your roof and give you advice on the best way to maintain or repair it. The number one reason flat roofs have to be replaced is due to neglecting the roof's need for repairs and maintenance. 

6. Do not have hazardous materials on your roof. Especially having the roofing system getting exposed to those materials. This can cause damage to the material or other damage to the roof decking. Some roofing materials can become damaged with other products that aren't made for the specific type of roof you may have.

If you have questions about flat roof systems. or you have an existing flat roof that needs an inspection or repairs, give Mikku and Sons Roofing a call at (623) 465-1068. We are experts at flat roofing and will give you our best advice on how to move forward to best solve your problem in the most economic and efficient way possible.


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