Installing Hardwood over hardwood

Old 09-24-09, 02:03 PM
Thread Starter
Join Date: Sep 2009
Location: California
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
Installing Hardwood over hardwood

I'm installing about 500 sq ft. of new 3/4 pre-finished hardwood in my living room. I'm installing this over my original hardwood and will nail it down. My issue is that my old floor is sagging in some locations and I did try to raise the floor by jacking up the joists however it seemed to start causing more issues than it was worth. Can I fill the low spots with self leveling concrete? If I do will I be able to nail the new hardwood on top? Will the concrete crack and disintegrate when I nail down the new hardwood?

I appreciate any advice.

Old 09-24-09, 03:34 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 36,607
Upvotes: 0
Received 11 Upvotes on 10 Posts
Welcome to the forums! How "out" is the floor? Some deflection is acceptable. Have you taken into account the raising of the floor and how you will deal with the transitions? 3/4" is quite a rise.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: