1st time coosa board user

[Jeff79Sceptre]

I coated it first with epoxy and then laid 2 layers of 1708 on it for the new tank bed. It does flex a little bit I assume that's the glass flexing as it would be considered a finish glass. Am I correct on this? I will get some heavier mat to tab it in better since most of the weight of the tank rest on the outside edges of the bed. This tank holds 165 gallons so making sure it doesn't crash thru is important.

[CoreyTrx]

Jeff that 1708 isn't a finish glass. You're not going to get any mat that is stronger then the 1708. Did you put 2 layers on each side or just on one side? If its just on one side I would put a couple layers on the other and that will really stiffened it up. If its already on both sides I would put another layer or two.

[martin]

Originally Posted by CoreyTrx

Jeff that 1708 isn't a finish glass. You're not going to get any mat that is stronger then the 1708. Did you put 2 layers on each side or just on one side? If its just on one side I would put a couple layers on the other and that will really stiffened it up. If its already on both sides I would put another layer or two.

I agree I alway use two layers on both sides. i try to use alternating strands if i can.. But no mater what i use, I lay 1.5mat on the coosa side then 1708 or 1808 biaxial glass. I always sandwich biax inbetween mat layers. and finish off with an extra layer of 1.5 oz mat for a smoother finish.. this is for any sandwich core I do...