Plywood To Increase Floor Height? - Flooring - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Flooring


Thread Tools Display Modes
Old 01-17-2011, 02:20 PM   #1
Join Date: Aug 2007
Posts: 44
Rewards Points: 25

Plywood to increase floor height?

We have a split section bathroom, call them his and hers. We'd like to replace the carpet in hers with laminate.

His = sub floor, vinyl (wasn't removed when wood was added), foam pad, 5/8th engineered wood floor.

Hers = sub floor, carpet pad, carpet.

We'd like to replace the floor in the Hers with laminate to some what match what is in His, but there would be a difference in the thickness of the flooring which would show at the transition.

After removing the carpet and pad, could I lay plywood (1/4 inch?) on the subfloor (to give it more height) then the pad, then laminate? This would reduce the variation in height where the two floors meet. Not sure if adding additional plywood would cause issues.



ps. We'd consider pulling all the floor and replacing all of it at once but the prior owners had to cut into the trim/door frame to get the wood in, so unless we could get something exactly the same height those cuts/gaps would be visible.


Kiwi. is offline   Reply With Quote
Old 01-17-2011, 02:59 PM   #2
Cabinet Installer
Dansbell's Avatar
Join Date: Jul 2007
Location: Medford OR
Posts: 57
Rewards Points: 75

If adding 1/4 underlayment would even the height between the two floors that might be the best thing to do. My only concern is that you make sure you secure it to the sub-floor in a fashion that will limit or eliminate any squeaks that might want to occur. If the underlayment is spanning a low spot in your sub-floor causing a gap between the two, that gap would close as you step on it and squeak as it slides up and down on the fastener.

You might add some glue to the mix but if your floor is fairly flat I would just recommend using plenty of fasteners (close together - 4" squares). A wide crown staple might be a good fastener for a 1/4" material.


Daniel S. Bell
Belbuilt, LLC
Cabinet Installation Medford, Oregon
Dansbell is offline   Reply With Quote
Old 01-17-2011, 03:06 PM   #3
Join Date: Aug 2007
Posts: 44
Rewards Points: 25

Will try and be a little more mathematical about it, but the it might require 1/2 inch ply. The plan would be to glue and screw it all, then pad and laminate.
Kiwi. is offline   Reply With Quote
Old 01-17-2011, 06:18 PM   #4
Join Date: May 2010
Location: NJ
Posts: 211
Rewards Points: 200

Don't glue and screw . just screw it . Run the length of the plywood the same way as the existing sub floor .
Just move a full sheet over one joist , so it overlaps the ply on the floor . Gap the joints 1/8"
Floor Doc is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Installing plywood or chipboard over 1X6 planking on a 52 year old house' roof. JBfromSD Roofing/Siding 2 09-20-2010 10:09 PM
Bernoulli's Principle, increase 3/4" pipe to 1-1/4" or 1-1/2" copper ChrisDIY Plumbing 14 09-18-2010 09:49 PM
Fixing a screwup - stain on oak plywood brich Carpentry 9 05-13-2010 11:09 PM
plywood damaged by water hendjl Building & Construction 4 11-03-2009 06:47 AM
Hardwood Subfloor: OSB vs. Plywood vs. OSB + Plywood italoblu Flooring 2 07-31-2008 12:11 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1