EPDM roof

[Paul_Jay]

Hi everyone.
1990 Chevy Tioga class C (24')
I bought it with the understanding it needed a roof, and boy does it.
The membrane is threadbare, the decking is buckling in places, there is a large soft spot by the rooftop A/C, and recently, after a highway run, a spot in the membrane has torn off and waves proudly in the wind.

My Mom is under the impression it can be patched. I know better.
I'm planning on a full strip, replace rotted decking (probably some structure) and then a new EPDM membrane.

I am a third rate tinkerer on things mechanical, but a 25 years carpenter. No part of a residential house scares me, so I feel confident (mostly). I have the tools.

However, I am asking for opinions from those more experienced. I am looking at Dicor membranes and their installation kit with glue, lap sealant and mastic.

Is this a quality product? Am I barking up the right tree? I don't see how this can be patched. Is there a better product? Where is a source for a new roof A/C gasket?
My mom is coming for this in October and autumn is breathing down my neck here in NY, I need to move.

If it goes to Tn. w/o being repaired I believe it is the death knell for a nice rig. She will not (cannot) pay retail for it to be repaired. She is a professional at procrastination.

I am going to try (again) to load some pics, because they are vital for your opinions.

Wish me luck.
Paul

[Paul_Jay]

Thanks everyone for the ideas.
Does rhino liner come in other than black? Never thought of that but a black roof in Tn. Might be too hot. I like the ideA of getting local from roofing supplier, probably cheaper.
@ Dr. I will take you up on that offer soon. Appreciate it.
I figure 5 years this r. V will be in our lives. But I would like to repair as best is reasonable, even if just for the next guy too.
@eddie. That's some solid information there, thanks. I considered that stuff as it seems to be rubber roof in a can. But, by the time I replace rotted decking, I'm thinking 1/2 the roof is stripped already. I'm Not sure. I've never been a fan of shortcuts, always feeling it could have turned out better. I'm already anticipating the worst so if it's worse yet,,,,,,,,oh boy. I know it's gonna be bad. If it was a smaller area it would be a no brainer.

This is why I tell her no one is going to give her an estimate. There is no way know to until your deep into it.
1/4 ac ply is a good tip. Gonna use that one. Do you mean the contact cement? Isn't the roof glue water based? Contact cement isn't i don't think. Bad reaction with the rubber? Worth checking out. Your right that glue is $$$. I love the roller idea. Does the seam tape replace the need to "spackle" the seams of substrate with wood filler?
All great info guys keep it coming.
What is that other type of membrane roofing I reAD about on here. P O or something. Bumpy, more tear resistant. Can't search for it, don't know the name.
Is that a better option?

[Cousin_Eddie93]

You can buy a paint on liquid roof EPDM product as well. I replaced my EPDM liner 5 years ago with a ducor liner. It was a straight up pain in arse, took me a lot longer than I thought and the water damage, like home construction is ALWAYs worse than it appears. If it were to do it all over again, I would have used the paint on product and save a poop load of time. But if your dead set on the liner, a few things may help:
1, RV luan is expensive, 1/4 finished ply worked well for me.
2, the AC gasket is reusable, no need to replace it unless damaged. My resealed just fine.
3, builders contact cement is just as good as the pricy ducor brand.
4, A solid wood kitchen flour roller worked great when applying the membrane.
5, be sure to replace all your vents and caps. The old ones are nasty don't remove too easily with out bending and damages the flanges.

The paint on products will last just as long and you can paint it right over the old liner (except where you have water damage of course. You also may want to consider using eternabond or the ducor equivalent tape along the seems where you replace your luan, expensive tape but well worth it. A buddy of mine use it on his project and it worked great on the new seams.

[fortytwo]

Check RV roof in Green Springs, FL or Rhino Roof for options. Not cheap, but warranted for 20 years. Base consideration is how long will the RV be kept. Roof options come in a wide range of quality, and price.

[donn0128]

Dicor is sort of the standard. But there is probably other brands worth considering. Start calling roofing suppliers and ask for prices from them too.it is basically the same roll roofing material used in connercial applications.

[Bumpyroad]

fix the wooden parts then check out rhino lining, etc. for a decent fix.
bumpy

[Dr_Quick]

Several years ago I replaced the EPDM on a 22' 5th, along with the roof boards as about 2/3 of the roof boards were in bad condition due to leaks. If you want to PM me I will be glad to tell you how I did it.