The flat roof over your porch or addition does not need to be the part of the house you worry about. Rubber membrane has been protecting low slope roofs for over 50 years, and it is still the workhorse of the category. JB Roofing Systems is an EPDM roofing contractor serving PA homeowners and businesses across Montgomery County, handling everything from new membranes to patch repairs on roofs other companies gave up on.
EPDM Roofing
What Is EPDM Roofing?
EPDM is a synthetic rubber membrane, usually black, made from ethylene propylene diene monomer. The name matters less than the track record: EPDM has been installed on American flat roofs since the 1960s, longer than any competing single ply system, so its performance in real winters is proven rather than projected.
The material stays flexible in cold, stretches instead of cracking as the roof expands and contracts, and shrugs off the freeze and thaw cycling that destroys rolled asphalt. For a Pennsylvania flat roof that bakes in July and freezes in January, that flexibility is the whole game. You will find EPDM on porch roofs, additions, dormers, garages, and full commercial buildings for the same reason: it just keeps working.
Installation and Replacement
EPDM Installation and Replacement
EPDM comes in large sheets, which means a typical porch or addition roof can often be covered with a single piece and few or no field seams. Fewer seams means fewer future leak points, and it is the core reason rubber has earned its reputation for quiet, uneventful service.
Our crews tear off the old roofing, correct any soft decking, then fully adhere the membrane and detail the edges, walls, and pipe penetrations to specification. JB Roofing carries GAF Master Elite certification, a standard about 2% of roofers reach, and that same attention to detail governs every rubber roof we install. EPDM is one of several low slope options we offer, and our flat roofing page compares them all in one place.
Repair and Restoration
EPDM Repair and Restoration
A damaged rubber roof rarely needs full replacement. Punctures from dropped branches, seams lifting at the edges, and flashing pulling away from a wall can all be repaired with proper EPDM patches and primers that bond into the membrane itself. Older but sound membranes can also be restored with seam work and protective coatings that add years of service.
The honest caveat: a membrane that is shrinking, brittle, or failing across its surface is done, and patching it is throwing money at a roof that has told you its answer. We will show you photos of what we find and price both paths.
EPDM vs. TPO
EPDM vs. TPO: Which Should You Choose?
EPDM is the value pick with the longer track record. It costs less installed, repairs easily for decades, and its black surface is a nonissue on a shaded porch roof or a section you never see.
TPO costs more and answers a different question: its white surface reflects summer sun and its heat welded seams form a single continuous sheet. Over air conditioned living space or a commercial building, that reflectivity pays real dividends. Our TPO roofing page makes the full case. When we quote your project, we will tell you which membrane actually fits it, because we install both and profit from neither answer more than the other.
Cost and Lifespan
EPDM Cost and Lifespan
Frequently Asked Questions
FAQ, Answered
How long does EPDM last?
A professionally installed EPDM roof lasts 20 to 30 years in Pennsylvania. Installation quality is the main variable: correct adhesion, seam work, and flashing details determine whether a membrane reaches 30 or fails at 12. Keeping drains clear and fixing punctures promptly also protects the high end of that range.
Can EPDM be patched?
Yes, EPDM is one of the most repairable roofing materials made. Punctures, open seams, and flashing failures can be patched with compatible rubber and primers that chemically bond to the existing membrane, and a proper patch on sound EPDM can hold for 10 or more years. Repairs stop making sense only when the membrane itself is brittle or shrinking.
Get a Free EPDM Estimate
A rubber roof is the cheapest peace of mind in roofing when it is installed right. Schedule your free estimate and we will measure your flat roof, check the decking and drainage, and quote a firm price with no surprises. Or call 267-966-7648 and tell us what your flat roof is doing. We will tell you honestly whether it needs a patch or a membrane. You can also reach Jeff directly at jeff@jbroofingsystems.com.
