A little more EternaBond on the roof

troutslayer

Senior Member
Joined
Feb 19, 2012
Posts
2,523
Location
NW AR (God's Country)
I put 6" EternaBond on the roof where the fiberglass front cap meets the roof. This area had a bunch of pits in the Dicor (or whatever Jayco used) so I got it covered then applied a little Dicor to the edges of the EternaBond just to keep the edges clean. While I was at it, thought I might as well cover the seams on the bathroom vent and skylight.
 

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Nice....I can't quite tell by the pictures of the skylight, but did you peel up the old sealant before you put down the eternabond? I looks like you went right over the old sealant. If so how did you get a good bond to the old sealant? Does the tape stretch and form to the shape of the sealant? Never used eternabond so just curious.
 
Nice....I can't quite tell by the pictures of the skylight, but did you peel up the old sealant before you put down the eternabond? I looks like you went right over the old sealant. If so how did you get a good bond to the old sealant? Does the tape stretch and form to the shape of the sealant? Never used eternabond so just curious.

It's interesting you should ask that. I had some issues getting the EternaBond to go over the spongy material without getting a bunch of air bubbles. The tape sticks to anything except silicone so sticking to the old sealant was no problem. The 4" wide tape was enough to cover the old sealant well but then I discovered that I could just peel that old material up so that's what I did on half of the area around the skylight and that eliminated the air bubbles. The tape is not supposed to be stretched. I know that because Jayco stretched a piece of it that covers the outside seam on my main slide out and it started to lift in a couple areas. I had the dealer repair that under warranty soon after I purchased the RV. I also used the EternaClean product to clean all surfaces then applied the EternaPrime before applying the tape. Probably a whole lot more than you wanted to know :).
 
It's interesting you should ask that. I had some issues getting the EternaBond to go over the spongy material without getting a bunch of air bubbles. The tape sticks to anything except silicone so sticking to the old sealant was no problem. The 4" wide tape was enough to cover the old sealant well but then I discovered that I could just peel that old material up so that's what I did on half of the area around the skylight and that eliminated the air bubbles. The tape is not supposed to be stretched. I know that because Jayco stretched a piece of it that covers the outside seam on my main slide out and it started to lift in a couple areas. I had the dealer repair that under warranty soon after I purchased the RV. I also used the EternaClean product to clean all surfaces then applied the EternaPrime before applying the tape. Probably a whole lot more than you wanted to know :).

Skip-
Thanks for all the info...good to hear as I am going the Eternabond route this year. BTW, where did you buy all that product and do you recall the costs?
Thanks.
Happy RVing,
Jeff
 
Skip-
Thanks for all the info...good to hear as I am going the Eternabond route this year. BTW, where did you buy all that product and do you recall the costs?
Thanks.
Happy RVing,
Jeff

I bought the tape from Amazon because it was the cheapest I found during all my searches. The 6" X 50' roll cost $88 and the 4" X 50' was $57 (no tax and no shipping cost). Certainly not cheap. I also bought a steel seam roller for $20 and I think the EternaClean and EternaPrime were somewhere around $12 each. I've heard a lot of good things about this stuff so am hoping it lasts as long as they say. Good luck on your project!
 
Personally I swear by that stuff. I used plenty of it over the years on my previous rig from skylight repair to questionable seams between the fiberglass roof and the gutter. I do what you did and that's put caulk (Geoflex is good, not household silicone) on the leading edges to keep the wind from lifting it. If the surface is clean that stuff sticks like crazy and is permanent.
 
As others have mentioned, proper cleaning and prep is key. I discovered that an old wallpaper seam roller works well to help stitch down the Eternabond tape. I hate wallpapering so I might as well use that tool for something I don't mind installing.

vic
 
snip...... While I was at it, thought I might as well cover the seams on the bathroom vent and skylight.
Nice work on the EternaBond project :cool:, it's a great product and will last for years.

Another seam that should be watched is the slide(s) outer roof/trim edge, the OEM sealer tape has a tendency to pull-up along it's edge and isn't as robust as the Eternabond product.

My EternaBond project from a few years ago: http://www.jaycoowners.com/forums/f30/eternabond-sealer-tape-project-9264-3.html

Bob
 
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