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Old 03-24-2019, 01:42 PM   #1
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Roof leak

Just checked my camper now that the snow is all off and I have a small leak from the bathroom vent fan. I pulled the inside trim off and dried everything that was wet. I went on the roof and two corners on the vent cover are leaking where the flange sits on the roof. I can see where the factory rubber sealant is cracked. What is the best and longest lasting sealant you guys have used and suggest?
Thanks for any help
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Old 03-24-2019, 02:23 PM   #2
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Dicor "self-leveling" lap sealant is the standard go-to product for RV roof caulking applications.

Dicor: https://dicorproducts.com/product/epdm-lap-sealants/

Some have gone a step further and used Eternabond sealer tape which is a great product as well. Common widths used are 4" and 6".

Eternabond:https://www.bestmaterials.com/Eternabond.aspx

Bob
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Old 03-24-2019, 02:31 PM   #3
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Thanks Rustic Eagle, would I use both products on the crack or can I just use the Eternabond tape by itself? I haven’t had a chance to research either product yet
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Old 03-24-2019, 02:39 PM   #4
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Either product can be used separately. I use the Dicor product for all my vent, skylight, stink pipe, etc., caulking touchup when required (check spring/fall)....., easy to use. In the event I have to replace any vents, skylight, etc., the Dicor is easier to work with then removing the Eternabond sealer tape.

However, I have applied the Enternabond sealer tape on my TT's front cap/roof seam and slide roof seam joint in lieu of the Dicor touchup...., I applied the Eternabond right over the existing OEM caulk. The Eternabond solution will last longer and doesn't require any PM.

My Eternabond application: Post #8 & #58 here:

https://www.jaycoowners.com/forums/f...-51005-14.html

I do keep some spare Eternabond in my TT for those 'just-in-case' emergency EPDM roof repairs.

Bob
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Old 03-24-2019, 03:11 PM   #5
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I looked at your posts and the seam looks good with the tape. I may just get the 4” eternabond tape. I’ll put silicone in the crack and go over it with the tape. Did you use the EternaBond 801.1415 EC-1 EternaClean Spray they sell and suggest using prior to the tape ?
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Old 03-24-2019, 04:08 PM   #6
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Can you put Eternabond on the textured popcorn roof for those of us with fiberglass? I’m concerned the texture will not allow a good seal.
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Old 03-24-2019, 04:10 PM   #7
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Quote:
Originally Posted by Burchie70 View Post
I looked at your posts and the seam looks good with the tape. I may just get the 4Ē eternabond tape. Iíll put silicone in the crack and go over it with the tape. Did you use the EternaBond 801.1415 EC-1 EternaClean Spray they sell and suggest using prior to the tape ?



I would stay away from silicone any place. Not sure eterna bond will stick to the silicone either. As said above, Dicor self leveling on the roof and than QSIP Quad on vertical surfaces.


Good Luck.
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Old 03-24-2019, 04:14 PM   #8
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I would stay away from silicone any place. Not sure eterna bond will stick to the silicone either. As said above, Dicor self leveling on the roof and than QSIP Quad on vertical surfaces.


Good Luck.
Amazon link?
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Old 03-24-2019, 05:40 PM   #9
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Quote:
Originally Posted by Burchie70 View Post
I looked at your posts and the seam looks good with the tape. I may just get the 4Ē eternabond tape. Iíll put silicone in the crack and go over it with the tape. Did you use the EternaBond 801.1415 EC-1 EternaClean Spray they sell and suggest using prior to the tape ?
Last Eternabond purchase I made, I added a can of spray cleaner. It worked well, use sparingly. I have also used Acetone liquid.
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Old 03-24-2019, 08:28 PM   #10
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snip...... Iíll put silicone in the crack and go over it with the tape. Did you use the EternaBond 801.1415 EC-1 EternaClean Spray they sell and suggest using prior to the tape ?
I tend to stay away from silicone products on the roof.

As far as surface prep, I usually start out with a good Dawn soapy wash with a brush/cloth, rinse, and let dry. After washing, and prior to applying the Enternabond sealer tape I've normally used lacquer thinner applied sparingly to a clean rag wiping over the roof/cap surface following immediately with a clean damp (water) cloth....., let the surface dry. As mentioned the Eternabond prep product is fine as well.

Don't forget, a good roller is required to activate the sealer tape adhesive.

Bob
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