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Old 07-22-2012
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Rebedding skylights

I recently rebedded the skylights in my '90 hunter 30'. I used neophrine rubber because I could'nt find any butyl rubber and because I like doing things over and over again. They leak like a sieve. Any tips before I pull them and try butyl?
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Old 07-22-2012
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Re: Rebedding skylights

Butyl or life caulk work great.

Try finding the manufacturers recomendations and see if there is a requirement to flatten or shim the hatch if installed on a compound deck.

Take some neat epoxy and seal any core in the area. Better is to dig out about 1/2" around the instillation of core, and replace with thickened epoxy. Same with fastener holes.

Don't over tighten the fasteners.

If installing on top of non-skid, knock it down a little. If installing in smooth glass, rough it up a little.
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Old 07-22-2012
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Re: Rebedding skylights

Quote:
Originally Posted by Stumble View Post
Butyl or life caulk work great.

Try finding the manufacturers recomendations and see if there is a requirement to flatten or shim the hatch if installed on a compound deck.

Take some neat epoxy and seal any core in the area. Better is to dig out about 1/2" around the instillation of core, and replace with thickened epoxy. Same with fastener holes.

Don't over tighten the fasteners.

If installing on top of non-skid, knock it down a little. If installing in smooth glass, rough it up a little.

I would probably opt for Life Seal over Life Caulk. If it were mecahnically fastened, I would consider butyl tape or more likely for me a product like GE Silpruf SCS2000. I like the SIlpruf as it has a longer shelf life than, say for example, DOw COrnings 795. However, for non-mechanically fastened glazing compound, I prefer the Dow COrning 795 which has a very high adhesion, sticks to Lexan and other plastics, yet remains plyable.

Brian
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