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Old 04-18-2012, 12:50 PM   #1
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Flat Camper Roof


I have a EPDM roof on our little camper now but don't want to replace it with EPDM for a few reasons. I am installing new exterior 1 sheathing plywood then using a new to me product called Gaco roof coating which has a good guarantee, here is a link to the roof coating.
http://www.gacoretail.com/gacoroof.html

I contacted the manufacturers and they told me the plywood would probably soak up some of the coating which is good. My question is: would it be best to prime the plywood before the coating.

Another question is: I will be installing a drip cap/edge also. Would it be best to install the drip cap/edge after the first coat of roofing laying a bead of butyl sealant, then install the cap while the sealant is fresh, or should I install the cap/drip edge on the bare plywood with the butyl sealant then two coats of roof coating over the cap as I coat the plywood?

Would it be to my advantage to use a fiberglass tape over the seams of the plywood or seal the edges with the butyl sealant?

I know this is a bunch of questions and I appreciate any help, thanks.

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Old 05-18-2012, 11:42 AM   #2
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OK, another question, will butyl caulk stick to silicone rubber roofing? If not how would I seal a leak around a pipe through roof?

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Old 05-18-2012, 09:17 PM   #3
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If you want it really soak in, I would not prime.

Be careful with a drip edge for fear of creating a small damn. You might want to cut a very shallow rabbet for it to fit into a seal it with sealant and go right over the top with your roll on product.

I would seal with sealant. The tape is less likely to adhere if I was going to venture a guess. Just tool it down really flat and the materials should stick. Check with the manufacturer for compatibility.
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Old 05-18-2012, 09:44 PM   #4
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Quote:
Originally Posted by Windows on Wash View Post
If you want it really soak in, I would not prime.

Be careful with a drip edge for fear of creating a small damn. You might want to cut a very shallow rabbet for it to fit into a seal it with sealant and go right over the top with your roll on product.

I would seal with sealant. The tape is less likely to adhere if I was going to venture a guess. Just tool it down really flat and the materials should stick. Check with the manufacturer for compatibility.
I hadn't thought about the drip edge creating a dam, but it would, I appreciate the suggestion, I will do just that, thanks for your help W O W.
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Old 05-18-2012, 09:52 PM   #5
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Good luck.

Let me know how it turns out.

Last edited by Windows on Wash; 05-18-2012 at 09:55 PM.
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