EPDM or TPO roof?

[Richbeck]

does anyone know what type of roof membrane my 1994 gulf stream science cruiser has, it is rubber and from what i see on internet its looks like epdm, it has 1 coat of rubber sealer on it but looks very old and peeling, and have a lot of leaks inside. thanks.

[Nick-B]

If it is the original roof then I'm pretty sure it will be EPDM. The manufacturers didn't start using TPO until the mid 2000's.
If the underlying rubber is not totally deteriorated, then you could scrub down the old sealer to remove any loose stuff and recoat. That will get you by for another couple years probably but it sounds like redoing the roof would be the best. If it is something you can tackle yourself (with help) that would be the best solution.
There was someone on this forum that redid their rubber roof and had lots of pictures but I cannot find that old thread.

EDIT: OK, I found the thread but it was a link to another web site and the link is broken. It was posted by a current forum member named "rsflight" so if you are interested in seeing what he did you could try contacting him.

[hoggem]

EPDM (rubber) is dark almost black, TPO (plastic) is white, clean away some of the peeling to tell, which you have. I spent 40 years in the roofing trades and In my opinion coating these types of roof are just throwing your money away. First you have to really, really clean them, with the correct products as any petroleum based products will seriously damage them. If you have serious leaks get the roof replaced, you will be dollars ahead in the long run as coatings do not repair leaks. If you determine the source of the leak and the membranes are not to far gone you can patch them.

contact me if you need more info