On Sep 16, 6:15*pm, "CL \"dnoyeB\" Gilbert" wrote:
I need to make a lid for my Cistern. *I plan on using some 2x4s and perhaps
3/4" plywood. *I am wondering if I paint this, will it take on any measure
of weatherproofness?

If not, how do i make wood weatherproof. *Also, without handling too many
nasty chemicals. *I'm not interested in the treated wood, but I can use it
if necessary. *Can't afford cedar.

The water in the Cistern is not for drinking.

CLG


In time anything you use will fail, but marine grade woods will
last far longer than most. Even those must be protected by a marine
grade finish.

I suggest you also consider fiber glassing whatever you use.

Regular outdoor paints are not water proof, but rather water
resistant. They will not stop water vapor only liquid water.

Wood is a material that usually does best when allowed to breath,
so completely sealing it can actually cause problems.

Few wood products or finishes available at the local lumber yard
and suitable for that kind of use.