Using waxed poly on the underside of a deck will help keep it water tight?

[Darren Nemeth]

Just a thought here.

If I put a second coat of waxed Poly on the underside part of the ply, will the wax help guard against condensation?

Or will there not be much of a difference in the waterproofing?

I am a few hours away from ordering my resin!

 

[ondarvr]

Re: Using waxed poly on the underside of a deck will help keep it water tight?

It's always nice to finish a laminate off with a wax coat, but it won't make any difference for the condensation. You are using glass along with the polyester on the bottom side of the plywood aren't you?

 

[Darren Nemeth]

Re: Using waxed poly on the underside of a deck will help keep it water tight?

It's always nice to finish a laminate off with a wax coat, but it won't make any difference for the condensation. You are using glass along with the polyester on the bottom side of the plywood aren't you?

Yes. 1 1/2 csm to be glassed to the undersides, too.

Here is what I have coming via UPS this week.

5 yards of 1708
15 years of 1 1/2 csm
15 yards of 6 oz woven

I am going to assume that for the stringers I can use the 6 oz woven and overlap the bottoms with the 1708. I have no choice now because that is what is coming to me.