: Hi Paul,
: You can put on two layers together.
: Some put the football under the glass, and others over the top.
: Even if you do it separate, you don't need to wait very long.
: Tack dry is enough. Then you get a chemical bond still, whereas the
: other way it is only mechanical.
: Do it asap.
: JohnK

: JohnK

The epoxy doesn't have to be tacky to get a chemical bond, the epoxy takes about a week to get about 75% of the total cure and about a month to get a full cure at room temperatures. Anytime in that first week will work fine and still have a chemical bond.

6 ounce is fairly heavy already, 12 ounce is bulletproof also as mentioned will be pretty heavy. Putting a second ply on the football "might" make sense for a rugged boat, doing two layers of 6 ounce on the whole boat though is overkill. Smaller layers, like the football should go on after the hull is covered otherwise you stand a good chance of trapping air where there is an overlap, no strength where air is trapped.

Bill H.
Bill H.