0 Helpful?

Protecting crawl space slab foam

We have a 4' crawl space that has eps foam+vapour retarder for a 'slab.' what are some cost-efficient options for protecting the foam and poly? i imagine the homeowner will want to use the space for some storage. p.s., concrete is not an option....thanks again, gba!

Asked by erik olofsson
Posted Jan 28, 2013 2:05 PM ET
Edited Jan 28, 2013 3:18 PM ET


3 Answers

Select your preferred way to display the comments and click "Save settings" to activate your changes.

The right answer is "concrete." I'm not sure why you don't like the right answer.

I suppose you can loose-lay some 4x8 sheets of cement backerboard on top of the foam if you don't like concrete.

Answered by Martin Holladay, GBA Advisor
Posted Jan 28, 2013 2:20 PM ET


thanks for your advice, martin. what about laying down t+g osb directly on the poly? or laying standard edge osb on 2x4 sleepers?

Answered by erik olofsson
Posted Jan 28, 2013 2:53 PM ET


As long as the crawl space floor stays dry, I suppose OSB will work.

Answered by Martin Holladay, GBA Advisor
Posted Jan 28, 2013 3:12 PM ET

Other Questions in General questions

Condensation in (conditioned space) attic, built to "environmental standards"

In Project management | Asked by herbert suesserman MD | Mar 5, 15

Insulation around a center chimney -- cape?

In General questions | Asked by stephen edge | Mar 4, 15

Recommended taping of plywood and foam layers

In Green products and materials | Asked by Dan Burgoyne | Mar 5, 15

Roxul board used in basement as insulation against concrete wall?

In GBA Pro help | Asked by tim gabriel | Mar 5, 15

Membrain in walls, poly in attic. OK or not?

In Energy efficiency and durability | Asked by Alex House | Mar 6, 15
Register for a free account and join the conversation

Get a free account and join the conversation!
Become a GBA PRO!