12"x12" only gives a 1" over lap all the way around a 10"x10" patch What I do in a case like this is cut peel ply , lay it on a non stick surface plastic ect then wet it out , apply a layer of glass wet it out then another layer of glass ect.. then pick up peel ply, glass and epoxy in one piece and apply to patch area. You can pick up the whole piece and depend on the glass not warping out of shape as the peel ply won't stretch like just glass cloth. You just need to get all of the excess epoxy squeegee out prior to placing it on the patch area. This will not work on compound curves however.
Mike Turner Jackson Missouri ----- Original Message ----- From: "Larry H." <lah...@yahoo.com> To: "KRnet" <kr...@mylist.net> Sent: Monday, January 15, 2007 4:30 PM Subject: Re: KR> question about glassing > One more thing Randy, in order to have what is considered a structural > repair using fiberglass cloth and resin, there should be at least a one > inch overlap of the new fiberglass cloth onto the exhisting fiberglass > surface that is not damaged. IF I were doing a two layer of fiberglass > cloth repair on a damaged section, just to make it easy to understand > lets say a 10 inch by 10 inch area is damaged. First of course remove the > 10 x 10 damaged area, then I would apply my first layer of cloth down > approximatly 12 inches by 12 inches ( this would be a 2 inch overlap all > around onto the exhisting good surface, my second layer would be about 11 > inches by 11 inches centered in the first layer of 12 x 12 I layed down. > The second layer would be at least a one inch overlap of the original > surface. By stair stepping the cloth this way it will be more easy to sand > and taper into the originl surface instead of a thick edge that would be > created if you used two pieces the same size such > as 12 x 12 or 11 x 11 inchs in our example that would be left around the > perimeter of your repair. > Hope this makes sense !! > Larry H. .org/info.html
