![]() ![]() Apply the splice adhesive using a 3-inch- or 4-inch-wide by 1/2-inch-thick solvent-resistant paint brush in a thick, even, smooth coat with long, painting-style strokes, so that the marks from the brush disappear, yielding a smooth, glossy adhesive surface.Īpply splice adhesive to both mating surfaces (on the roof and on the patch) at about the same time, so as to allow approximately the same drying time.ĭo not use a circular motion to apply the splice adhesive. Thoroughly stir the splice adhesive before and during use. Prepare the Splice Adhesive and Apply it with a Brush: Note: If you are using a self-adhering peel-and-stick EPDM patch or tape to repair an EPDM rubber roof, you should not apply adhesive to the patch itself. You must thoroughly clean the membrane before applying the patch. A second cleaning with weathered membrane cleaner is often necessary.Īpply EPDM splice primer to the clean area and allow it to dry. Then clean the area again using weathered membrane cleaner. Repeat this process until all of the dirt is gone, and then dry the area with a clean cotton rag. Proper membrane preparation is accomplished by first scrubbing the membrane with a soft-bristled scrub brush (do NOT use a brush with wire bristles) and warm soapy water, then rinsing with clear water. ![]() It is very common to see failed EPDM repairs, even when they were done by professional roofers, due to the old membrane not being cleaned or not being cleaned thoroughly enough.įine particles of carbon black continually migrate out of EPDM membranes as they age, so even a membrane that looks fairly clean will often have a layer of black soot-like material on its surface. When you repair an EPDM rubber roof membrane which has been in service for some time, it is absolutely vital that you remove the accumulated field dirt. A puncture in an EPDM rubber roof membrane caused by a dropped piece of plywood. Note that even a pinhole will require a 6″ x 6″ patch. Round all corners of the repair piece with scissors or shears. The repair must extend a minimum of 3 inches beyond the edge of the hole in all directions.Ĭut an appropriate-sized piece of EPDM membrane or EPDM tape. This is how to repair an EPDM rubber roof membrane puncture using a patch made of EPDM rubber or EPDM cover tape. ![]() Weathered Membrane Cleaner See on Best Materials How to Repair an EPDM Rubber Roof.Fully-cured or semi-cured material is preferred over uncured material for long-lasting repairs. EPDM Rubber Membrane, at least 0.060″ thick (60-mil) See on Amazon or minimum 6-inch wide Peel-and-Stick EPDM Cover Tape, Patching Tape, or Flashing Tape See on Amazon.Seam Roller, Hand-held See on Amazon Materials.Cleaning Brush, Soft-Bristled See on Amazon.One or two holes: See this repair kit (yes, it will work on a roof).įor more extensive repairs: See this repair kit on Amazon. What You Will Need to Repair an EPDM Rubber RoofĭIY EPDM Repair Kit: This is likely to be the easiest option, as these kits have everything you’ll need except for a caulk gun or scrub brush, and they have an appropriate amount of each material, so you don’t end up with a lot of something left over. It is extremely important that you follow the membrane cleaning instructions or your patch will fail. EPDM is completely incompatible with solvent-based asphaltic roofing materials, such as asphalt-based roof coatings and roof cement. Important: You should never use asphalt products on an EPDM roof. EPDM rubber is one of the easiest roofing materials to repair properly.Īlways follow roofing safety guidelines when working on a roof. You can repair an EPDM rubber roof yourself. This guide provides step-by-step instructions on how to patch a rubber roof. Related Articles EPDM rubber roofs are fairly easy to puncture with dropped tools or careless foot traffic.What You Will Need to Repair an EPDM Rubber Roof. ![]()
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