Vapor Barrier Under Wood Floor

The first is a thick 1 plywood subfloor several layers is ok.

Vapor barrier under wood floor. Alternatively if it sits on patio stones that sit on the sand the plastic barrier goes under the sand to prevent moisture from migrating up into the shed from the ground. Hi guys i say yes. This will prevent the 2 flooring nails never use floor staples from penetrating through the subfloor. I say always install it no matter what.

I am working with a floor guy who says he never installs a vapor barrier under the floor on the 2nd floor of a house. I had him take up. A vapour barrier is a damp proofing product that is attached to a wood floor underlay and is intended to reduce the passage of moisture. They will only go in 7 8 and leave a moisture barrier under the floor.

Also lay a 15 pound roofing felt on this subfloor before you lay the floor. Underlayment materials provide a crucial moisture barrier that prevents the wood from warping or sustaining other water damage when condensation rises from the subfloor. They also offer varying degrees of soundproofing preventing each step you take from echoing throughout the house and of thermal insulation keeping the floor more comfortable for bare feet. 11 14 00 333 lifetime posts.

You can also add a vapor barrier to the crawlspace floor but there may already be one under the concrete. The floor structure of a plastic shed can have 10 to 20 mil vapor barriers under the gravel it sits on.