On Wednesday, October 30, 2013 12:49:15 PM UTC-4, Soartech wrote:
On Wednesday, October 30, 2013 10:20:11 AM UTC-4, John Galloway wrote:

Here is a good technical article. The two component process



mentioned in the article refers the Wx Seal and Wx Block.







http://www.wingsandwheels.com/Weather%20Block%20Tech.h



I have read testimony from other pilots here that this stuff works but this

still does not explain why (massive) fiberglass boats, which probably never get

waxed, don't crack. Is it because they don't flex?

I have a friend with an old ASW-19 in which the wings are really crazed but

the fuselage is not.

Good article. Gelcoat is a petroleum based product and will dry out. Its easier to maintain then to bring back.