Thull-hull wood backing

[Ken13559]

After 16 years some of my stock thru-hull wooden backings are starting to rot/deteriorate. Question is why use wood backing in the first place? Thru-hulls at bilge area do get wet from time to time.

Ken Y

 

[jssailem]

Cheaper and easy to install. Will hold up for a while. Then need replacement.

 

[BigEasy]

Replaced mine on a ‘88 Hunter. Used 3/4” plywood that was coated with polyester resin & Matt with end grain soaked with resin. If I were doing it again, would probably use G10 laminate. Replaced thru hull fittings at same time.

 

[Gunni]

Yes, good time to do a complete replacement of the thru-hull. GROCO now makes a pre-cut backing plate with threaded inserts for the flange bolts. LINK

 

[Sumner]

I followed Maine Sail's recommendations and ...

.... made our backing plates. I have the whole install on my site here ....

http://purplesagetradingpost.com/sumner/endeavour-plumbing/plumbing-index.html

... and Maine Sail has an excellent description of the same procedure (that I pretty much followed) on his site also.

Sumner
=================================================================================
1300 miles to The Bahamas and Back in the Mac...
Endeavour 37 Mods...
MacGregor 26-S Mods...
Mac Trips to Utah, Idaho, Wyoming, Canada, Florida, Bahamas