Rubber roof hole cutting
Posted: Tue Sep 27, 2016 7:36 pm
I am having a new gas mobile home water heater put in . My gas company has agreed but they claim the direct vent tank model or even the atmospheric with bottom opening for air intake (note it is NOT tankless) must be vented thru the roof and not the side of the home. No reason why, maybe due to the sealed combustion chamber and draft issues. I want to be sure they seal the area around my expensive rubber roof correctly. My concern is they may lay down a metal plate with the round flue opening and not use the correct sealant method and maybe use regular tar. Will that eat the rubber roof? What should they be using to seal out rain water?
Thanks
Thanks