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BV003493

01:22PM | 03/10/14
Bvflooring
I live in a 104 year old 2 story house wood frame house. My 1st floor flooring is a mixture 1x2 wood floors over sub floor, Pergo over sub floor and finished sub floor. There are several different 1 inch elevations throughout the 1st floor depending on the floor covering. I want to remove the Pergo and old wood floor (beyond refinishing) and take the whole first floor down to sub floor. The sub floor boards are 1x3s that run the width of the house. There is nothing under the the sub floor other then joists and ground (pier and beam home). My thought is after removing the Pergo and 1x2s, I would then lay some type of barrier over the existing 1x3 sub floor and put down a new plywood sub floor over it. This would give me a new level, draft free sub floor so I can lay new wood floors or tile throughout the home. What would you recommend is the thinnest plywood to use that is still tongue and groove? What type of barrier would you recommend to eliminate moisture, drafts and squeaking? I'm concerned with adding layers on layers which would result in lots of door trimming or adjustments. Thanks in advance!

Duane, Moderator

09:38PM | 03/10/14
Member Since: 11/14/13
87 lifetime posts
Thanks for the question,
I would recommend that you remove the multiple layers of flooring and leave the 1x3subfloor, I would recommend at least 1 layer of 3/4 osb or plywood for the subfloor ( I like advantech sub floor sheathing) it moisture resistant and helps with deflection. The question is with the 1x3 and 1 layer of 3/4 sheathing, will it leave a gap of more then 1/4 of a inch below baseboard? what part of the country to you live in?

Duane
Bobvila.com expert moderator
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