Trouble with Polyester resin

[jackdaw]

Thanks Mallymal,
I've check out the speck on the two sealants, and the 5200 is twice the strength of the 4200.
The 4200 alows for the joint to be taken apart (as far as I can tell). As i'm only going to be using it to seal trim, I think it should be fine. It states it's good above and below the water line, so that's good enough for me.
Ive ordered some up , I'll let youi know how it goes.

Cheers Dave