FIRST lay the smallest piece of mat and work my way up finishing with the largest piece on top (outside)?
This is the way:
Usually the smaller piece is not that much smaller than the large, but the above is how to do it. Pretty easy once you get the hang of it. Just wear rubber gloves and clothes that you don't mind getting covered in resin! BB
Is this a structural or cosmetic repair?I can't find someone to clarify what is the correct way, or rather the correct order to place the layers of fiberglass when patching from the outside of the hull. ...My confusion comes from seeing different videos and DIY sites presenting layering in both ways.
Is this a structural or cosmetic repair?
If structural, might you be confusing guides for the back side reinforcement build-up with those for a cosmetic hole fill?
Perhaps you viewed videos for techniques required by different resins...
For maximum strength, epoxy patches are built-up separately then placed in the hole as a unit, polyester patches are laminated in place as Zeppo outlined.
Also, pay attention to the size boat being repaired in demonstration excerpts. Instructions involving basketball size holes in 1" thick keelboat hulls need to be scaled back considerably when applied to the 3/16" thick hull of a Sunfish.
So then if I am getting this right, I should layer the glass in one piece, THEN apply to the boat as a patch? This is what I originally saw at a West System video but the order of the layers in this same video looked to me in the opposite order as to everyone else's. Just checking before I start this weekend. Thanks. And 65; great video!
I think I found where the confusion is coming from...So then if I am getting this right, I should layer the glass in one piece, THEN apply to the boat as a patch? This is what I originally saw at a West System video but the order of the layers in this same video looked to me in the opposite order as to everyone else's.