For All Roofs Except EPDM/PVCPlease Choose a Special
Freight Included (Continental US, AK and CA Excluded)
Polyprene® is an all rubber, universal roof repair cement used for flashings, seams, pitch pans, cracks, splits and making various repairs on all roof types. It provides you with a long-lasting, water-tight, 100% rubber seal. Polyprene® was voted the #1 repair compound among roofing professionals. The heavily fibered high-solids content prevents mud cracking, making it ideal for pitch pans as well as to seal seams, cracks, around vibrating rooftop equipment, skylights, vents, flashings, and more. In emergency situations, wet surface adhesive agents allow repairs even to damp metal.
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- Quickly and easily reinforces critical areas
- All rubber, fiber reinforced — stays flexible and won't crack when cold
- Wet surface adhesive agents allow repairs to damp metal, when required
- Easily incorporates PolyCore™ reinforcement polyester, when needed, for extra strength
- Can be applied thick, in one layer, without the threat of mud cracking
- Available in Heavy Brush Grade & Trowel Grade for ease of use and versatility
Water vapor permeability
Weight per gallon
8.8 – 9.3 lb.
Flashpoint of solvent
Dry to touch @ 77° F (50% rel. humidity)
~ 12 hrs
Ultimate tensile strength
600 psi min.
4.3 pli min.
-40° - 140° F
Q: I have a leak in one of the seams of my roof, what is the best product to use to fix it?
A: To fix a leaking seam the best product for the job is a 100% rubber elastomeric roofing caulk like Polyprene®. Secure any loose seam with Polyprene beneath the joint. Seal all seams using polyester PolyCore embedded into a layer of Polyprene. Because it holds its pliability, Polyprene® won’t split or crack over time, which could cause leaks to recur.
Q: Which Polyprene® should I use to seal large gaps in my roofs surface?
A: Polyprene Trowel Grade is thicker with enough body to fill gaps up to ¼” without sagging. It cures to a tough rubber seal that is strong.
Q: Are there different grades of Polyprene for different roof types and uses?
A: Yes. Polyprene for EPDM/PVC is specifically for use on EPDM and PVC membranes. Polyprene Heavy Brush Grade is versatile for most caulking repairs (seams, cracks, flashings etc). It spreads quickly and easily around penetrations and seams yet holds tight to seal out moisture. Polyprene Trowel Grade is a more viscous cement. Use for when you need body, build-up or fill larger gaps up to ¼”.