Defo don use silicone base products on wood

[thornbackflound]

It has all peeled of my transom,never took,doh,had to sand it all down and will have to use the trusty sika flex,never mind ,may just of reacted with the paint,glass resin?

[jyasaki]

What did you use? Silicone caulk? Normal household silicone caulk doesn't weather very well.

If you need to seal stuff up, use something rated for marine use: Lifecaulk, 3-M 4200, something like that.

A bit of surface prep would probably help as well (at least a good degrease.) Depends on what you're working on though.

jky

[prairie tuber]

I'm also partial to 3M's 4200 (non-permanent) & 5200 (permanent) adhesive sealants. The 5200 also adheres to hypalon extremely well (assuming that the hypalon is properly prepared for a glue). Be sure to wear vinyl gloves when working with 5200, it will stick to your skin for about a week.

If using the Sikaflex, be sure it is from there marine product line (291 or 292) and not just any type of Sikaflex caulking (which may also contain silicone). As with 3M's 4200, the Sikaflex 291 is meant for low strength adhesion, whereas the Sikaflex 292 is meant for high strength (permanent) adhesion.

http://www.sika.ca/ind-mar-mar_prod.htm