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Paperboy326 · 05-12-2016, 08:03 PM

We have a new to us 2011 Fleetwood Bounder. As I was up doing a roof cleaning. I am thankful its been parked inside most it's life. I found a small a slit almost looks like from a razor perfect slit about 4" long. Not all the way through but can see the backing fiber, but still enough to leak. Roof still feels solid but almost like the first layer of plywood is delaminated some about the size of a small dinner plate. No signs of water inside.

My idea is to slide a hose in through the slit pump some epoxy in there set a brick on it. Then seal the slit with a Dicor Diseal patch.

RodK · 05-12-2016, 09:55 PM

I would use eternabond tape on the slit.

Newmar2856 · 05-12-2016, 10:08 PM

X2 on the Eternabond over the Diseal tape. I used the Diseal tape for a small repair and it's just not as sticky or pliable. I need up pulling it off and using the Eternabond.

Paperboy326 · 05-13-2016, 03:30 AM

OK EntraBond it is. What about the idea of injecting some epoxy under there to stick the TPO back down?

c_oneil · 05-13-2016, 08:29 AM

Is the TPO glue failed or is it the first layer of plywood failed? If the wood is sound then epoxy may not be the best glue for TPO. If the plywood is failing it would probably be best to try and repair the plywood now if water has caused delamination. Dry rot can continue in the wood even after you seal the leak. Take a look at a marine supply place for different types of epoxy. They have special penetrating epoxies made for just what you want to do. When you put pressure on it a sand bag would apply more even pressure if its a curved surface than a solid brick. You could look at http://www.jamestowndistributors.com online. They have lots of marine epoxies and some "How To" articles for using them. If its just the TPO needs sticking down I would talk to an RV supply house for some glue to use.

Gary RVRoamer · 05-13-2016, 01:39 PM

I would ask what adhesives are compatible with TPO. Epoxy probably isn't it, though. Actually, it may not have been 100% glued anyway - EPDM often is not, so maybe TPO as well? The important thing is to seal it up. I've used Diseal ok, but agree that Eternabond seems better. Or just squeeze some Dicor lap sealant over the split. There is no magic needed for a simple repair like that.

Paperboy326 · 05-16-2016, 07:04 PM

So I'm not sure if the epoxy is the best option. It may work but either way it's going to harden, and your committed. I can look in the slit with a flash light and it's only the first layer of ply of the plywood roof. Solid as a rock under that. My new thought is make the 4" slit about a 8" one, pull that rippled wood out, make sure it's dry, glue the TPO back down and install the EntraBond patch. It's old about 8" x 12" of flaky wood.