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Old 02-25-2024, 11:22 AM   #1
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EternaBond tape question

Those of you that have used ET along the roof side transition.
How far did you overlap the vinyl trim?
Pics would be awesome
Also, any tips. I believe I have a leak where the TPO overlaps and tucks behind the vinyl cover over the screws.
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Old 02-25-2024, 11:27 AM   #2
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Are you talking about the front cap area, or along the sides at the gutters?

I did the front cap. I tried for a 1" overlap, but the existing caulk in some areas only allowed less than 1/2".

ET. Is good stuff. If it touches it is bonded, you really do not need a huge overlap.

One thing to note, do not stretch it. If it is stretched, it will release in a few days.

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Old 02-25-2024, 12:09 PM   #3
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I've used it before and know not to stretch.
This is along the sides.
I've got a leak somewhere on the roof, it reared it's ugly head inside the tt where the ceiling meets the wall.
It's a 2016 mrb whitehawk 23' er. TT was stored nose down for water runoff. I know water seeks lowest and easiest way in. Water appeared at street side window next to jackknife couch.(not at window) but ABOVE window where wall meets ceiling.
TPO does appear cracked(not full length) in areas where TPO goes from horizontal to vertical. So I'm thinking water is getting in this area. Inspected the whole foor and all else seems ok. I'll be re- inspecting while adding the EB.
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Old 02-25-2024, 02:57 PM   #4
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I covered the screws with Eternabond. The rounded cheapo cover which covers the screws thatís on most TTís isnít in mine but if it was I would have covered it with Eternabond. I used 2Ē wide but if I had to do it again I would have gone with 3Ē wide to give me a little more over the roof coverage. Tip when you apply the Eternabond start on the top side wall then finish bending it over on the roof. But donít push on the roof too much or youíll cause the roof membrane to wrinkle.
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Old 02-25-2024, 04:48 PM   #5
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If you have screws in the area that the leak may be coming in take them out and look for rust. On my 195RB I took the Dicor off the front cap area and found one screw missing and another almost rusted off. I took off all the screws and replaced them before bridging the aluminum skin to rubber roof with 4 inch Etearnabond.

I went over all the roof, removed Dicor and checked screws before Etearnabond coverage with no Dicor anywhere to go bad.
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