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Author Topic:   rotten screw holes in deck--'73 Montauk
rusty posted 03-24-2001 11:02 AM ET (US)   Profile for rusty   Send Email to rusty  
screw holes from seat were exposed for several years and are now bored-out and rotten-screws won't hold seat or console. looking for some type of liquid that will reseal everything and then be re-drilled
Chesapeake posted 03-24-2001 05:50 PM ET (US)     Profile for Chesapeake  Send Email to Chesapeake     
West Epoxy combined with a thickening agent -- I have used their 406 colloidal. Drill out the hole liberally. Liberally wet the hole with unthickened epoxy, then inject thickened epoxy into the bottom of the hole with a syringe (available wherever you buy West product.

Some folks suggest putting an allen wrench in the drill upside down and to further drill the foam so that a hockey puck is formed. Then when you insert the epoxy, the plug cannot be pulled out.

dfmcintyre posted 03-24-2001 08:14 PM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
To expand on Cheaspeake's excellent suggestion, that's exactly what I did to remount my console and seat. I like the hockey puck defination.

I used a nail bent over 90 degrees then blew out the cavity with compressed air. It was slightly damp so I positioned a blower/heater on the holes and left it on for a few days.

Then mixed up West with the strength additive (I don't have the number handy) and poured it completely full (I had drilled out a 3/4 - 1" hole) and let it set for two days.

Then I _tapped_ the plug to accept stainless steel machine screws. During the drilling, make sure not to drill through the plug and into the foam.

Mounting hardware this way gives a better surface area for stress, _and_ keeps the foam dry, as even if water gets under the fixture's mounting plate, and into the hole where the screw is, it can't get into the foam.

whalerron posted 03-26-2001 11:30 PM ET (US)     Profile for whalerron  Send Email to whalerron     
I am confused. I always thought that Boston Whaler embedded wood in the hull anywhere that a factory mounted item was screwed down. I also thought something that could apply any kind of leverage should not be mounted into fiberglass that only has foam under it because it would cause the fiberglass to separate from the foam.

??? - ron

Chesapeake posted 03-27-2001 09:09 AM ET (US)     Profile for Chesapeake  Send Email to Chesapeake     
Ron: I took Rusty's question to be one of last resort -- that the wood was rotted out where he needed to screw in.

If screwing into a different place where the wood is not rotted is an option (this is what I did with the center console cleats for my Nauset), then it is probably preferable. Just make sure to seal up the other holes.

As far as West Epoxy is concerned, it is compatible with foam and fiberglass, so it should be no problem. For specific questions, it would be worth calling Gougeon Brothers, the West System manufacturers. They also know whalers pretty well.

Hope this clarifies.

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