Join Date: Nov 2009
Thanked 82 Times in 77 Posts
Rep Power: 6
Re: Bedding Deck Hardware With Butyl Tape
Although Maine's web page illustrations are wonderful, I keep finding myself forced to do installations that don't quite line up with his instructions.
Mostly my problem is hardware where you can't wrap butyl around the head of the bolt or screw because the hardware is very tall, and far off of the deck.
For example, I have teak grab rails on the inside and topside of the boat, that sandwich the cabin top between them. The bolt head is on the INSIDE of the cabin, in the interior grab rail, it penetrates the cabin top, into the topside grab rail, and into a threaded insert in the top of the topside grab rail.
The best I could do, was snug them down close to the cabin top surface, and wrap butyl around the bolt as best I could, and then finish snugging the grab rails down.
This is not optimal, because the bolt rotates, disrupting the bond of the butyl tape that is wrapped around it. (which is why I get things partially bolted, and close to the cabin top before applying the tape.)
Still, it seems to work and I have not had any leaks. I have a few such installations, and this is frustrating.
S/V Old Shoes
1973 Pearson 30 #255