willow1957 wrote:
Hello, Learning female here. I just purchased a 1999 5th wheel. The roof needs some TLC and I was all set to purchase this product Blackjack 1000 ultra roof coating. I have read in other forums about other people using this but when I read the Precautions on the can it specifically says DO NOT use on TPO or rubber roofs. I am assuming I have the rubber roof but I do NOT know what a TPO roof is. Can anyone explain that to me? Like I said others have used it on rubber but others say do not use it. I need help making a decision. Money wise this would be great for me, but if you think I shouldn't use it can you please recommend the next best product that won't cost me a arm and a leg. I thank you all for input. I am a newbie and just learning so what's the difference between a rubber roof and a TPO roof please.
TPO is a synthetic rubber like material which IS made from petroleum products..
If the Blackjack manufacturer specifically states not to use, you really SHOULD HEED THAT WARNING!
There is a very good chance that Blackjack material contains petroleum distillates which WILL attack any synthetic and natural rubber along with vinyl and severally damage the existing roofing.
As stated, unless the roof is showing BLACK you should never apply any other material over top. If you do it WILL be a very short term "fix" at best. When roofing turns black that means it's life is over and having NEW roofing put on is the proper fix.
If roof is not leaking and just looks discolored (IE not white) just ignore the discoloration..
Also, NEVER USE ANY PRODUCT THAT CONTAINS SILICONE!!!
The reason for that is NOTHING, not even other silicone products will ever stick to cured silicone and cleaning old silicon is a real bummer of a chore and often results in the next caulking to fail stick where ever you failed to get it clean enough.