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Old 06-01-2018, 08:47 AM   #24
JRTJH
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Join Date: Mar 2011
Location: Gaylord
Posts: 26,996
The only place I use Eternabond is on a cut/gouge in the middle of the EPDM/TPO roof membrane or on the "roof/wall edge" of a slide. On any other location I use DICOR self leveling sealant. The only reason I don't use sealant on the slide edges is because the DICOR won't set up and will stick to the rubber seals when the slide is retracted. DICOR takes years to "completely cure" and will adhere to slide seals 2 or 3 years after application if left in contact for months (as in winter storage).

Here's one example of what I call an "eternabond mess". If you google "eternabond tape failure" you'll get hundreds of pictures of the tape not adhering properly. Not all of them are what I'd call "tape failure". Many are probably failure to clean the surface, applying while the surface is damp or oily, etc. I'm not going out on a limb and say "never use Eternabond". Rather I'd say, don't use it as a "band aid" where you should really be using DICOR the way the factory did, to cover screws, penetrations of the membrane and edges of extrusions. Putting a "permanent seal" over the entire area makes it very difficult, sometimes impossible to repair that area in the future.
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