Woodworking Talk banner

1 - 6 of 6 Posts

·
Banned
Joined
·
5 Posts
Discussion Starter #1
I purchased 300 sq. feet of birch flooring.
Not sure what I should use under flooring?
I will be stalling flooring on plywood floor over a crawl space. We live on the west coast.
 

·
Registered
Joined
·
1,455 Posts
You're definitely going to need a vapor barrier so your floor doesn't cup. Is it unfinished or prefinished?
You could put a coat of finish on the back side of your boards to keep them from gaining/losing moisture.
I'd use #15 roofing tar paper as underlayment. Overlap the seams an inch or so and staple it sparingly - just enough to keep it flat. That should be all you need.
 

·
Registered
Joined
·
253 Posts
+1 on Brians comment. I laid in hardwood flooring when I lived in CA and used a vapor barrier it was a must. My advice when it comes to laying your own flooring...don't skimp on anything. I don't have any knowledge with using tar paper inside a home though
 

·
Registered
Joined
·
356 Posts
tar paper is a NO NO

In most states, and IM assuming california, tar paper is against code for an underlayment inside a home. A fire would cause toxic fumes.

Jason
 
1 - 6 of 6 Posts
Top