Questions and Answers for Henry 209XR Extreme Rubberized Wet Patch Black Roof Leak Repair Sealant 0.90 gal.

A:  Paul we do not test for elongation because the products like Henry 209XR are fibered, and when you stretch the mastic/fibers for the elongation test, they will disconnect, which is something you don’t want to happen. We test for Lap Shear/Pliability instead, they can actually bend the product 180 degrees which is 100%. Hope this gives you enough information.

A:  bartsflatroof, with a tar and gravel roof the leaks are a little difficult to find. Once you remove the gravel you will need to see if you can locate the leak. Henry 209XR is a thick product that covers about 12 square feet per gallon. Once your apply 209XR you can then re-broadcast the gravel. On a flat roof leaks will usually appear where water tends to stand for an extended period, around a vent pipe, electrical mast, or roof penetration. Another problem dead flat roofs experience is they loose their elasticity and begin to pull away from the edges. It would bee a good idea to check those areas first.

A:  James, Henry 209XR is a highly rubberized roof sealant. Henry 209XR will stay very flexible for years but it will take about 30 days to fully cure and should not be coated over for at least 30 days. The curing process is the slow release of the solvents in the system.

A:  Hector, Henry 209XR can be used to cover exposed nail heads on a roof.

A:  Mark, Henry 209XR is SEBS modified rubberized asphalt, it is Styrene, Ethylene, Butadiene, Styrene, not butyl or polysulfide.

A:  Mark, Henry 209XR is SEBS modified rubberized asphalt, it is Styrene, Ethylene, Butadiene, Styrene, not butyl or polysulfide.

A:  Vlad, Henry 209XR is a solvent based system that contains fairly aggressive solvents. It would not be pet friendly.

A:  We are not quite sure how the Henry 209XR would react to the polycarbonate panels in the long run since it is a solvent based system. You would be better off using Henry 900 Construction Adhesive and flashing sealant. Henry 900 has very high adhesion qualities, is a moisture cure product and is a product that is used when sealing dissimilar materials that have differing expansion and contraction rates due to temperature changes.