CT 203 246 6089 / PA 724 221 2968
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Naas Ferreira

Naas Ferreira


We have been installing and repairing commercial rubber roofs for over 30 years.

Erik Ferreira

Erik Ferreira

Operations Manager and Estimator

We repair all types of flat roofs; metal, EPDM Rubber, TPO and Torch Down.

Andre Ferreira

Andre Ferreira

Estimator and Project Coodinator

We install 2 ply rubber roofing systems with a 40 year warranty.

Sven Ferreira

Sven Ferreira

Project Manager

Commercial Roof USA is a family owned and operated roofing company.

What We Now Know, Will Save You Money

Some 30 years ago, before we became Commercial Roof USA, Flat Roof Doctor was one of the first roofing companies to use the Modified Bitumen Torch Down Roofing System. At first, we only installed a single-ply system, but in 2005, a manufacturer developed a new product to improve the Modified Bitumen in the form of a self-stick base. After incorporating this base with the Modified Bitumen Torch Down rubber membrane, we realized that we had found the best flat roofing system around, which has enabled us to provide a 40 year warranty with every roof we install.

Click to Read Our Story

Andre started roofing when he was 16 years old. He has since become a flat roof expert in the installation and repair of all rubber roofs and metal roofs

Commercial Roof USA is a family-owned and operated roofing business. For the last 30 years we have specialized in the installation of rubber roofing for both commercial and residential properties in Connecticut, New York, and now, in Pennsylvania.

My name is Naas Ferreira. My late wife, Mia, and I arrived in the United States, from South Africa, in the mid-1980s and started a flat roofing business in Norwalk, Connecticut. At that time our company name was Flat Roof DoctorDuring the early and mid-1990s, Mia and I began a family and had 3 wonderful boys. Later, two beautiful girls would complete our family.

My very first flat roof installation was for a well-known man named, William F. Buckley, a conservative commentator and founder of theNational Review magazine. At that time, flat roof contractors were transitioning from the Tar and Kettle roofing systems to rubber membranes, however, the rubber roof industry was experiencing some problems with the bonding of rubber to metal. We developed a technique that secured rubber to metal, which was a breakthrough, and a remedy to the problem.

Erik with cameraWe pioneered the use of rubber membranes in Fairfield County, Connecticut; when other roofing contractors were still installing Hot-Tar-and-Gravel roofs, we began using our 2 ply Modified Bitumen Torch Down Roofing System, and never looked back. Since then our technique has evolved, and has become a system that is far more superior than any other roofing system.

As the business grew, my 3 sons took an interest and began helping me on holidays and during their summer breaks from school. Today, Team Ferreira has been fortunate enough to have expanded the business to New York and Pennsylvania locations.

Soon, a daughter will join Team Ferreira, to become the executive assistant (the boss) with the entire Team’s blessing.

Sven is a fully qualified roofing technician. He has been working on flat roofs since he finished school 4 years ago. 

Residential Roofs

Commercial Roofs

We Serve:

  • New York – Manhattan to Buffalo

  • Connecticut – Hartford to Greenwich

  • New Jersey –  Newark to Trenton

  • Pennsylvania – Philidelphia to Pittsburgh

Commercial and Residential Flat Roof Installation -Torch Down Rubber vs. EPDM Rubber and TPO Vinyl Roofs

Watch the video below to learn the differences between the 3 most common commercial roofing systems. 

Video Transcription - Top 3 Rubber Flat Roofs: TPO, EPDM Rubber, and Modified Bitumen

   Hi, my name is Erik. Although there are many commercial roofing systems to choose from, I want to explain the three types of single ply roofing systems commonly installed by contractors across the United States. Of the three types, EPDM is the most popular. It has been used for over 40 years. It is the same synthetic rubber membrane used to make inner tubes. Another type is TPO, which is a thermoplastic membrane, and finally there's modified bitumen, which is an asphalt based membrane.

Explaining the Three Types of Roofing Systems

EPDM Rubber

Let me explain more about each of these membranes. EPDM is produced in different thicknesses; they are 45, 60, and 90 thousandths of an inch. Most contractors use the industry standard of 60 thousandths of an inch, which is very near the thickness of a quarter. Some advantages for using EPDM on a flat roof are; first, it is the least expensive system to install per square foot.

Second, it is simple to install with the use of anchors, adhesives, and rollers. Also, it weighs less than other single ply membranes, and lastly, it is sold in wide rolls of eight to twenty feet, resulting in fewer seams. Some of the disadvantages are that harmful ultraviolet rays degrade adhesives used on seams and flashing, causing very premature separation. It's failing, like look at that that's glue that has gone bad and is no longer sticking to the rest of it. This is how it starts, and this is how it ends up, okay.

Erik Shows an Example of EPDM Roof 

Look how deep that goes and I'm not gonna lift it up further, just because I don't wanna make it worse, but this is around a drain area. Second, the black membrane absorbs ultraviolet light, causing shrinkage and brittleness, which decreases its life expectancy drastically. Right here, uh, over the years, the EPDM has shrunk a little bit and then, and thus stretched right here in the corner, and then with the stretching and the UV rays uh, pounding down on it, it started eating it away, and right here in the corner where it was mostly, stretched the most, this is where it got eaten away the most, also. You can see it has gone straight through.

Protective Mats on a EPDM Rubber Roofs 

Third, protective mats are definitely needed because the thin membrane is susceptible to punctures due to foot traffic on sharp objects left behind by maintenance crews. Another reason we don't recommend EPDM, is because it's so easily punctured. Um, here, on this roof you can see they’ve laid out mats for workmen to walk on, and this is supposed to offer protection, but as you can see there's never enough mats to cover the whole roof.

Repairs to seams and flashing is required long before the warranty of the fifteen to twenty years expires. Now, I'm gonna bring finger along be seam that's inside the cover tape; just watch this here, when I bring it along here. Look at all that water coming out. The surface preparation can be an added labor cost when removing an old roof system or installing one over a pre-existing one, and lastly the black color of the membrane absorbs heat and can lead to the super heating of the structure below, causing air conditioning costs to rise significantly.

TPO Vinyl Roofing

Now, let's about TPO. TPO is another type of roofing membrane. There are two thickness options to TPO 45 and 60 thousands of an inch which is roughly equivalent to the thickness of the quarter. TPO is composed of laminated layers. Of the three membranes, this one requires more experienced roofing technicians and much more equipment.

Advantages of TPO Vinyl

  • Some of the advantages of TPO are that the seams are heat welded rather than glued so they are much less prone to separation.
  • Secondly, the white surface of the membrane reflects much of the ultraviolet light, keeping the structure below cooler.

Third, if the contractor is certified by the manufacturer, to install the membrane, the manufacturer rather than the contractor honors the warranty.

Here are Some Disadvantages of TPO

  • First, the system is fairly new to the roofing industry; about 15 years, and has a long track record of revisions and improvements due to surface and seam failures.
  • Also, TPO is known to shrink, and its rigidity causes stress on seams and flashing.
  • A prolonged period of excessive heat exposure causes ultraviolet light degradation.
  • Another con is that contractors must calibrate their welding machines very carefully. Improperly welded seams may come loose during the first freeze and thaw cycle and lead to water infiltration. Lastly, the manufacturer's warranty is only fifteen to twenty years.

Modified Bitumen Torch Down Rubber Roofs

Now, let us talk about the modified bitumen torch down membrane that has been around since the late 1960s.These single ply membranes can be combined to create a two to three ply membrane that offers the best roofing system to date because there’s a forty year guarantee.

Some advantages for installing the modified bitumen membrane are; first, it is designed to be flexible in extremely hot and cold weather. Secondly, it is a two ply membrane with a thickness of about five quarters, or 3/8 of an inch, which is very puncture resistant. The membrane surface has been embedded with granular ceramics to protect it from ultraviolet degradation. Also, seams are fused together with high heat to prevent any separation. Unlike EPDM and TPO, the two to three ply system can withstand a heavy amount of foot traffic.

Modified Bitumen Roofs that were Installed 20 Years Ago

I want to show you some good news right now.  This is, uh, we always show you how bad things are, and how people do things wrong, but this is how you do a roof this roof we did twenty years ago and uh, this is how it should be done everything very clean done with modified bitumen torch down and it's lasting long and going strong.

Two Ply Rubber System Explained

Also, this two ply system can be installed over any existing roof or surface, with minimal preparation. Re-roof it and we decided to go over it because rather than strip all the gravel off and all the old tar, we save them a lot of cost by going directly over and I started about an hour ago, and this is our fiberglass liner that I'm laying down right now. Uh, this is the first step, next comes the self adhering base, and then our final layer of modified bitumen torch down. It's just as good as if we stripped it all the way down.

You get the same, uh, you know, same warranty, uh, but this is one of the most cost-effective ways to do it, both with time, labor, and debris removal.  Alright, I've already laid down my fiberglass liner, and I've anchored it down; this gives the roof the strength and stiffness it needs, and, uh, we have a two ply system that we, we do.

This is the first of the of the two ply. It's a self adhering base. You can see right here it's already starting to, it's already starting to adhere, and it's gonna to stay that way. Two layer of membrane as well as the protection of the fiberglass liner. You can't beat it. This layer directly to our other two layers and I'll show you in just a second how thick it is, but this is why this is a good system. It makes it one unified membrane all across.

Advantages of Installing a 2 ply system on a Flat Roof

 There are actually two advantages for installing a new membrane in this case.

  • A). There is no cost for stripping and removing the old membrane, and
  • B). Fusing an additional membrane over an old one creates a roof that will last well beyond 40 years, unlike the 15 to 20 year life expectancy of EPDM and TPO single ply roofing systems.

Naas Explains the 2 Ply System

This is the best roof you can ever have on a house, on a commercial roof anywhere. First of all, they had a modified bitumen roof.  This is modified bitumen torch down. It's plain. They didn't have the granular protection for the UV and that was called a single ply membrane; rubber membrane, was installed about fifteen years ago and is still in good shape, There's nothing wrong with the roof. You can see no, the UVs has not eaten up the roof and you can see the seams are nice. Everything is nice about this roof.

The owner just decided that he wants a new roof on there. Now, instead of removing this old system and installing a new roof, which most people will do EPDM or TPO,  that would be the worst thing to do. You have a modified torch down here the best system in the industry is to have a two ply system; two ply membrane. We using the old modified bitumen membrane and now we fusing another modified torch down on top of the old system.

That becomes the two ply system that exceeds any other roof system, by far.  This roof will last 40 years, or longer, no questions. What we doing now is, we only adding another membrane and we fusing them together. You cannot do that with any other system.This is a dream come true for us. We love the systems. Where you find old modified and we just torch a new one on top of it, with the granular protection the sand or granular you wanna call it; white in this case. That protects it from ultraviolet. But this roof will never, never go bad and will never leak any where.

Disadvantages Installing a 2 Ply Rubber Roof System

Some disadvantages are that the installation requires highly skilled roofing technicians. Secondly, the additional layer has an added cost for labor and materials. We installed our two ply system on the roof that we are standing on right now. It was installed several years ago over a tar and gravel roof. I'm going to cut the member and open right now to show you how well it's performed in the extreme weather conditions we've had over the last several years.

There we go. This is our two ply system. You can see how when we torch this together the membranes are fused so well together they cannot come apart and these stones never puncture this. Everybody always asks us that. Is that base sheet enough and it is.  It's a fiberglass reinforced base sheet and this can never go through and when I put this back you can walk on this all day long.There's air conditioning units up here that need maintenance. Extremely puncture resistant. Look at that, three eighths of an inch thick. 

In conclusion, for many years we have specialized in installing the two ply modified bitumen torch down roofing system. It has been our experience that it is, by far, the best roofing system, that we provide a forty year warranty for our labor and our materials for every roof that we install. The type and condition of your existing roof does not matter. Our roofing system is cost effective and will outlast any other roofing system.

Free Estimates

203 858 0080

724 221 2968

Residential & Commercial

Tar & Gravel Roof in Westport

2 Ply Modified Bitumen Torch Down Rubber Membrane

We Provide the Following Services

Residential and Commercial Flat Roofs

Contact us via email and send images for us to see what your issue is

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CT   203 246 6089

PA   724 221 2968

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Free Estimate or Ask a Question:

This EPDM rubber roof has a history of repair patches on seams. The adhesives lose their bonding properties prematurely.

EPDM Rubber roofs have a track record of repairs and seam fa.ilures. Contractors in Texas have completely stopped using EPDM Rubber as a roofing system

More about EPDM and Repairs...

EPDM rubber punctures easily. Mats are required for protection when there is foot traffic from maintenance workers.

EPDM Rubber is known for having many patches all over the roof. Some areas in the country have stopped completely using EPDM Rubber Roof Systems.

More about EPDM that Punctures...

Flat roof drains can become clogged with debris and cause ponding water.

Drains are the most essential part of a flat roof. The design and location of a drain is very important

More about Drains...

Flat roof chimneys develop mortar and crown cracks which causes leaks.

Chimneys eventually will need maintenance. The crown and mortar need to be repair or replaced every 20 years

More about Chimney Cracks...

This drain is located in the proper area of the flat roof, however, built-up debris blocked the drain strainer.

Even if a drain is properly installed and positioned on a roof, it still need to be maintained.

More about Roof Drains...

Skylight leaks are caused by brittle gasket seals or when flashing becomes separated from the roof membrane.

Many times the leak from a skylight would be caused by the plexiglass that has cracked.

More about Skylight Leaks...


We serve Connecticut, New York and Pennsylvania

Latrobe Location - we have been in Latrobe installing flat roofs for 10 years. We specialize in flat roof installations and repair192 McCullough Rd, Latrobe, PA 15650

We have been operating from the Latrobe area for over 6 years. Latrobe and Greensburg are in Westmoreland county and are very robust towns with an expanding infrastructure. The Arnold Palmer Airport Regional Airport offers its surrounding communities the opportunity to take flights at the drop of a hat.

Monroeville Location. We have been in and around Monroeville for the last 10 years. We specialize in the installation and repairs of rubber flat roofs.212 First Street Rear, Trafford, PA. 15085

Located just 13 miles east of Pittsburgh, Monroeville is part of the Allegheny County Industrial area. We have been serving Monroeville for the last 6 years installing flat roofs. We install the highest quality commercial flat roofing system in the industry.


Greensburg location. We have been installing flat roofs in and around Greensburg for the last 10 years. We repair all kinds of roofs. Rubber roofs is what we do.532 Jack St, Greensburg, PA


Commercial Roof USA serves Greensburg and all the Industrial areas surrounding it. We are a family-owned business and we provide a 40 year warranty with all our work. Our installation and repair services cover New Stanton, Mt Pleasant, Jeanette, Irwin, New Alexandria, and Youngwood. Call anytime to set up an appointment to get a thorough assessment of your roof. All estimates are free.

We have been in the commercial roofing business for over 30 years. Our roofing system is that of a 2 ply Torch Down roofing system that surpasses any other roofing system in terms of life expectancy.


Milford Location - Since 1995 we have been in Fairfield County installing flat roofs. We are the Flat roof Specialist for Southern Fairfield County. We serve from New Haven to Greenwich.

641 New Haven Ave, Milford, CT 06460

We have served Fairfield County for over 30 years. We have had years of experience in the installation of 2 Ply Modified Bitumen Rubber membrane.

We serve all of Milford, Stratford, Bridgeport, Newtown, Orange and New Haven. Commercial Roof USA is a family operated roofing business and we provide the highest workmanship with the use of quality materials available in the roofing industry. We developed the 2 ply roofing system over 25 years ago and it has become our specialty in trade.

Stamford Location59 Mathews Street, Stamford, CT. 06902

Stamford is one of the most economically vibrant cities in Connecticut. In the last 10 years, an expansion of the infrastructure, with new apartment buildings and commercial services.

We have been installing and repairing flat roofs in Stamford, and surrounding areas for the last 30 years.

We are a family operated roofing business and we provide the highest quality roofing system in the industry. Our 2 ply system consists of 2 rubber membranes fused together, which provides 3/8 of an inch of an impenetrable flat roof surface. Labor and materials include a 40 year warranty.

Greenwich location2 R Ivy Street, Greenwich, CT. 06830

Our family-operated business has served Greenwich for over 30 years. We have installed and repaired many of the roofs on the commercial buildings there.

We specialize in the installation of the 2 Ply roofing system on all flat roofs using the highest standard of workmanship and materials in the roofing industry. Our services cover the repairs and maintenance of flat roofs, as well. Our work comes with a 40 year warranty.

We serve Greenwich, Stamford, Darien, Norwalk, New Canaan, Wilton, Weston and Wilton in Connecticut. We also serve Pound Ridge and Bedford in New York.

Bridgeport Location393 Laurel Ave Unit # 310 Ave, Bridgeport, CT. 06605

We install and repair all flat roofs. We serve Bridgeport, Stratford, New Town, Trumbull and Easton.

We have been installing commercial flat roofs all over Fairfield County for the last 30 years. We serve areas from Connecticut to New York to Pennsylvania.

110 Hill Street Rear,

Everson, PA 15631

Everson is located on the northern edge of Fayette County. It is on the south side of Jacobs Creek, a tributary of the Youghiogheny River and which forms the border with Westmoreland County. The borough of Scottdale is to the north, directly across the creek from Everson. We serve Fayette County with the installation and repair of commercial flat roofs using a 2 Ply Modified Bitumen Torch Down Rubber Roofing System. We are a family owned business and have an office in Connecticut and one in Pennsylvania.

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