There is much confusion about rubber roofing, as well as misunderstanding of its benefits and limitations. In this article we will try to clear up the confusion and show you that rubber roofing is NOT the best flat roofing material, and there are better and cheaper alternatives to rubber.

If you have a leaking rubber roof in Massachusetts, Connecticut or Rhode Island we can give you a roofing price quote to replace your rubber roof with our flat roofing material of choice – a new, lifetime PVC Flat roof manufactured by IB Roof Systems. We can also repair your rubber roof at a relatively low cost, using only the best materials that rubber systems have, and extend the life of your rubber roof by a few years. One example of such materials are peel-and-stick flashing and seam tapes. We do not use black rubber glue as it is outdated, and leaks much faster.

BAD Rubber Roofing Video – this why you don’t want to have a flat rubber roof:

Quick Navigation:

• Why homeowners should avoid rubber roofing – The truth about the residential flat roofing market, why you should stay away from rubber, and carefully choose your roofing contractor.
• Alternatives to rubber roofing – Find out what other, better flat roofing products are available for a similar cost, but without the EPDM’s inherited problems.
• Residential rubber roofing – Learn why rubber roofs should NOT be used on a roof of your home.
• Commercial rubber roofing – Limitations of EPDM rubber in the commercial flat roofing applications.
• Why rubber roofs are so popular – Quick history of EPDM rubber in US flat roofing market, and the key to its popularity

The truth about residential flat roofing market and contractors.

This rubber roof is just 1 year old, and has been leaking since day one, until we replaced it with a lifetime IB PVC flat roofing membrane.

Rubber Roof Contractors: It is unfortunate, but most residential flat roofs are installed by roofing contractors that specialize in asphalt shingles. Since they can easily purchase rubber roofing materials from their roofing supply warehouse, and are not required to be certified installers, nor do they need any special training or equipment, they will often undertake such projects to keep their crews busy.

Incorrectly installed EPDM roof in Quincy, MA – rubber glued right over shingles:

The truth is that to get a quality rubber roof installed, it usually has to be done by a commercial roofing company that specializes in flat roofing. However, it is often the policy of such companies not to work with residential customers, for which there are many reasons. These contractors work with large commercial and institutional customers, employ union workers who are trained roof mechanics, specializing in their particular niche. For example, a commercial roofing contractor will have separate crews doing metal roofing or slate – these guys are “roofers”, and yet another crew doing flat roofing ONLY – these are “roof mechanics”.

A residential roofing contractor usually employs just roofers, who are good at what they do all day long – install asphalt shingle roofs, and often do not have a clue about how flat roofs work. When they get a potential client with a flat roof, they go to their supplier, ask what supplier has for flat roof, and the salesman at the supply warehouse TEACHES the roofer how to install EPDM rubber. This is not creative fiction or a product of my imagination – I see this happening nearly every time, when I come in to the supply store to get something.

“Trained rubber roofing installers”: If you are lucky, you may get a roofer that has received some sort of training about rubber roof installation. For example, one of my suppliers, provides installation training programs for their roofing contractors who install only asphalt shingles. The idea behind such training seminars is to increase awareness and solicit sales of more roofing products. A manufacturer technician provides a sample installation on a 8×8 feet demo stand.

Bellow is and example of such “hands-on rubber roofing training”.

As you can see, the roofers just sit around the demo stand while the MFG Installation technician shows them what to do. The whole demonstration took about an hour and a half, and covered thing like installing flat roofing insulation (ISO), adhering rubber to the ISO board, flashing a sky-light / chimney penetration with un-cured flashing material, installing the membrane up the vertical wall, cleaning & priming seams and installing seam tape, installing drip edge and a tape to seal the drip edge fasteners, and installing termination bar. In the same 1.5 hours we’ve also “learned” how to correctly apply yellow glue – membrane adhesive, seam primer – seam & flashing glue and how to install these systems in the winter, while violating manufacturer’s installation specs.

Out of 25 or so roofing contractors present, there were about 15 or so questions particular to the installation details. 7 of them where asked by me! Bear in mind that I already knew how to install a rubber roof and attended the event to talk to my salesman, representatives of the metal roofing manufacturer and for free refreshments

In any case, each one of those 25 or so roofing contractors, willing to learn a new, and very complicated roofing system, asked an average of 0.3 questions about this system.

Rubber roofs for residential customers: It was clear that my supplier and the roofing representatives were selling to Residential Roofing Contractors. Not once did they mention roof-top HVAC units, roof hatches, elevator shafts, gas/electrical pipes, roof drains, etc. They did however insist that the rubber is a good choice for a low slope shed dormer (without mentioning the poor low slope roof ventilation and ice dam prevention associated with shed dormers). They also mentioned that rubber is a good choice for a flat roof decks and patios.

EPDM Rubber roofing and flat roof homes.

Homeowners with flat roof homes often find themselves in a situation where their roof starts to leak rather unexpectedly – i.e. only after a few years since the roof was installed. This for the most part happens to homes that have a rubber roof on them. While most flat roofs will only last 10-15 years, older systems such as Tar & Gravel, Bur and in some cases Modified bitumen roofs are usually installed by roofing contractors that are somewhat specialized in their scope of work – these are “the old-timers” or former union guys that decided to try their luck working for themselves, and they actually went through special training and have years of experience. The problem is that roofing systems they install do not last long for many reasons outside the scope of this article.

Homes that have a rubber roof begin to leak well before their minimal life expectancy is reached because in many cases they are roofed by your typical shingle roofing contractor that is so confident in his/her abilities, and a rubber roof is merely a roof with a low slope.

Why rubber roofs are so popular?

The truth is, rubber roofs (EPDM) are the most used flat roofing products in the US / Canadian commercial roofing market. Rubber roofs we first put in service over 40 years ago, and since gained popularity among roofing contractors and their customers. The reason for such success lyes in the condition of the flat roofing market at that time and the available alternatives.

Back in 1960′s oil was still very cheap, it was more than a decade before the oil crisis of the 70′s and there wasn’t that much demand for oil. The oil refining process was far from being efficient and the industry was looking to get rid of many by-products of the oil refining process.

At the same time, the flat roofing industry was the same as at the turn of the 19th century, and the most common product to use on a flat roof was either a BUR (built-up roofing, using multiple layers of tar paper, saturated in hot tar or hot asphalt) or Tar & Gravel roofing, which was essentially a BUR roof with gravel added for additional protection. Flat roofing technology has not changed for 100 years and contractors needed a new, easier to install and cleaner product, hence, the EPDM was born.

EPDM consists mainly of oil (carbo-hydrate) based by-products with some modifiers and stabilizers added to extend its service life. Rubber roofing was cheap to produce, easier to install than conventional (BUR) roofs, did not require any special equipment to put it down and the membrane could potentially last for decades, as it was UV stable and did not break down when exposed to the weather.

Because rubber roofing was cheap, quick to install, and offered a potentially long service life, and with lack of any opposition from better roofing products, it quickly became the king of flat roofing and the pioneer of the single-ply flat roofing market.

Useful resources:

DIY epdm rubber roof repair – Our original article on how to fix a rubber roof with EPDM rubber adhesive (no peel-n-stick tapes)

Rubber roof repair guide – A part 2 of our Do-it-yourself guide teaching you how to fix EPDM rubber roofing systems with primer and seam tape.

Before you spend your money on the wrong stuff, consider all your options listed below:

What you should do when your flat roof leaks:

First of all, you should put up buckets to collect water, so the leak does not cause more damage than is already done. Once the dripping water is not causing any more damage to the interior, consider the following steps:

Step 1) If your roof is fairly new – call the roofing company that installed your roof and have them fix it.

Step 2) If it is an older roof, or the original installer will not fix it for some reason, you have three options:

• Fix the roof yourself
• Have a roof repair performed by a roofing contractor specializing in flat roofs
• Or if your roof is near the end of its life, it is best to replace it rather then throw any more money away on repairing it.

Step 3) To prevent more damages to your roof, interior of your home, or the inventory and the equipment of your business, it is a good idea to put up a tarp on you roof, until you choose a course of action – either fixing a roof yourself or choosing a roofing contractor to repair or replace your roof.

Step 4) Estimate the real cost to a repair flat roof. Learn what is involved, what the hidden costs and fees are, and why we consider flat roof repair to be “sunk cost”. This comparison will help you decide if it is time to finally replace your flat roof, or if repair is a feasible option.

Flat rubber roof repair in progress:

NOTE: If your rubber roof is leaking, we are offering Rubber Roof Repair services in MA, RI and CT. We can usually fix your EPDM rubber roof during the first roof inspection / repair visit. Some rubber roofs can be repaired, and you can extend the life of your roof by few years for a relatively low price.

DIY Flat Roof Repair guides

Due to a wide scope of flat roofing materials and different roof problems that cause leaks, it is virtually impossible to cover everything that is related to flat roof repair in one article. For your convenience, we have several DIY roof repair guides for a specific flat roof type and specific repair methods. These guides are easy to follow, and are aimed at both home and business owners.

DIY Rubber roof repair guides

The first guide is for homeowners with EPDM rubber roof leaks. There are essentially two methods of rubber roof repair, or rather two types of flashing materials that are used to repair a rubber roof. First is the older splice adhesive method (black rubber glue) applied directly to the rubber membrane. Second is a newer / better Peel & Stick method, which provides faster and better adhesion and lasts longer.

• Rubber roof repair – our original article about fixing EPDM rubber membrane roofs using “black glue” or rubber seams adhesive.
• EPDM Rubber peel & stick repair – Part II of rubber roof repair guide, which concentrates on the more advanced and efficient way to fix rubber roofs using EPDM primer, Peel & Stick flashing, and Seam tape instead of just using rubber glue.

DIY Rubber Roof Repair Video – learn how to repair EPDM rubber roofs:

The biggest issue for homeowners with DIY rubber roof repair is actually obtaining the EPDM roofing materials, which are usually sold only through distribution, and only to roofing contractors.

If you are a homeowner looking to buy Rubber Roofing supplies, such as: uncured flashing material, cover tape, seam tape, roof cleaner, primer, etc., it is best if you contact local roofers and buy those roofing materials and flashing from them. Roofing contractors may also sell you a piece of rubber membrane, which you would otherwise have to buy as a 1000 sq. ft. roll.

Identifying and repairing a leaky roof:

DIY Tar & Gravel roof repair:

Repairing a Tar and Gravel roof is simpler than fixing a rubber roof. All you really need to do is clean the leaking spot, apply tar, reinforcing mesh, and put gravel over your patch. The biggest problem will be finding the roof leak. Unlike the rubber roof, where it is easy to find a separated seam or flashing, tar roofs are covered with loose gravel, and you do not actually see any holes in the roof. Check out the Tar roof repair video below. For more information on locating and fixing a roof leak, check out the Tar Roof repair guide (a link is posted after the video).


DIY Tar & Gravel Roof Repair Video:

• Tar & Gravel roof repair – learn how to detect and repair leaks in your Built-up or Tar-and-gravel roof, using inexpensive supplies from Home Depot, Lowe’s and other Home improvement stores.

What you should know about Flat Roof Repair before you spend any money.

Flat roof reality check: roof leaks are an inevitable outcome for 99% of flat roofs in service today. If you have a flat roof, chances are that it is already leaking or will begin to leak soon, even if your roof is fairly new and was installed within 5-10 years.

This article is an overview of issues related to flat roof leaks. In the article, we review the cost of flat roof repair, actions you should take to get your flat roof fixed, as well as an outlook of what will happen after your roof is fixed.

The purpose of this Flat Roof Repair Guide is to help you avoid the costly mistakes that many home and business owners make when their roof leaks, and also to help you choose the best solution for your particular roof and your budget.

Note: Due to a wide variety of different flat roofing technologies, this article cannot cover all aspects of flat roof repair. For specific DIY ways to repair your flat roof, please refer to our EPDM Rubber Roof repair, and Tar roof repair how-to articles.

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End Part 1 – continue reading part 2 of this flat roof repair guide:

Continue reading this article – Flat Roof Repair Part 2, which discusses steps you should take, when your flat roof begins to leak, how to minimize the damages from these leaks, and look into TRUE cost of flat roof repair.

Note: we cut the original Flat Roof Repair guide into two parts, because it was pushing 4000 words, and was difficult to read even for me, even though I wrote it – do read the second part as it is crucial to tackling flat roof leaks with minimal damages and financial investment / loss.