A: RTJR, Henry 885 TropiCool 100% silicone is not designed to be a roof coating. 885 is a patching sealant to repair leaks. You should use Henry 887 TropiCool 100% Silicone Roof Coating if you want to coat your roof with a waterproof coating that is also highly reflective. You should not use Henry 885 over Henry 209XR that has not had the ability to cure for at least 90 days. Tar based products exude oils when the temperature heats up and could cause adhesion problems if not cured completely.
A: BKMom, Henry 885 TropiCool 100% Silicone would not be the product to use on a tar and gravel roof. You could use Henry 204 to repair the area as long as you apply the 204 to the surface when it is dry. Of course you will have to remove the gravel before making the repair. Just follow the instructions illustrated on the can label for a 3-course patch.
A: Michael, after opening the container, try to use it up as soon as possible. 885 is a moisture cure product that will draw water molecules out of the atmosphere to cure. Because of this, the sealant will start wanting to cure as soon as it is exposed to the atmosphere. For smaller jobs you can use Henry 884 that comes in a caulking tube.
A: No, don't use this on a wet roof. I did it earlier this month, and it didn't stick. I gave it a one star rating. The photo shows the strips I pulled off the roof.
A: Yes, this is the product you need. Mike
A: Tccc, about a year ago we changed the formula for Henry 885 TropiCool 100% Silicone sealer to make it a Wet Patch. You will need to look for the can that says Wet Patch on it to use it in wet conditions.
A: Donald, you can use Henry 885 TropiCool 100% Silicone around chimneys between the roofing material and the brick. The service temperature of Henry 885 is from -40 degrees to 180 degrees. Henry 885 has great adhesion to a wide variety to surfaces.
A: Mike, since we have not tested Henry 885 TropiCool 100% Silicone with deck coat we can only say that you will have to test the adhesion of the deck coat to it. Traditionally most products will not adhere to Henry 885 except Henry 887 TropiCool 100% silicone roof coating.
A: Natalya, you could do that but it would be extremely expensive. A flat roof will generally leak in only a few places, an obvious hole, along a seam, where water stands for longer than 48 hours or where there is a roof penetration such as a vent or skylight. Your best bet would be to inspect the roof at those areas, patch any areas that look questionable with Henry 885 and then coat the roof with Henry 887 TropiCool 100% Silicone roof coating.
A: Zhao, you should use Henry 885 TropiCool 100% silicone to repair water leaks if the roof is coated with Henry 887. Henry 209XR contains solvents and is not compatible with Henry 887.
A: Fishtacos, we have not tested Henry 885 for use on Polyethylene. Your best bet would be to perform several adhesion tests prior to proceeding with your project.
A: Charly, Henry 885 TropiCool 100% Silicone Wet Patch is made to be used directly out of the can. It should be the consistency of a thick cake frosting. Henry 885 should not be thinned.