Need Help With Installing T&G Plywood Subfloor - Carpentry - Page 3 - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 07-27-2013, 07:48 AM   #31
Join Date: Apr 2012
Location: Durham NC
Posts: 1,751
Rewards Points: 1,166

Originally Posted by WheelerGirl View Post
Hand Drive--we took back the set of original (6) pieces of plywood and bought 6 thicker ones, so we wouldn't have to apply 3 layers--saving us a lot of work--thanks for the tip. Now we have a new 23/32" subfloor in room #1 and will add a 23/32" underlayment (you can see it unattached on floor in pic) In room #2, we will install 3/8" underlayment (the top flooring will be laminate planks in both rooms). This will be about 1/32" in room #1 that we will have to sand just between the two adjoining rooms.

As you can see in the pics, the 3/8" will be butted to the 23/32" in room #1. There will be two seams on top of each other at this junction--subfloor and underlayment from room #1. Could we remove a couple layers of plywood about 4" and cut a notch out to go into room #2 to avoid the two seams? There will be a lot of traffic between these two rooms where there are double doors.
4" in from edge for the 8' seams is fine and I suppose 4" at the butt seams will work too, just do not want to break any farther away from the joist and as Gary mentioned do not nail/screw underlayment to joists which I totally forgot about..

that sounds like a good idea to cut that 4" in to avoid to many seams in a high traffic area.


hand drive is offline   Reply With Quote
Old 07-27-2013, 11:42 AM   #32
Join Date: Jul 2013
Posts: 19
Rewards Points: 10

GARY--I'm going to do this--thanks for the tip.

"Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!"
WheelerGirl is offline   Reply With Quote
Old 07-27-2013, 12:27 PM   #33
Join Date: Jul 2013
Posts: 19
Rewards Points: 10

Thanks for reminder Gary--I have read the APA article before when installing our subfloor----I needed to read the underlayment suggestions--but now I'm confused.

The 1 & 1/2 inch ring shank nail that was suggested in this APA article for my project (2 layers of 23/32" plywood--and the underlayment is not T&G--hope this is ok) would look like the left side of this picture if we use that size.

I do know this is from the Halex plywood manuf. BUT, I also read somewhere else and not by Halex (can't find it at this time) that the nail tips exposed to the crawl space is not a good idea and going through the subfloor layer will weaken the fastener.

But, The 1&1/4" ring shank nails that we bought do look a little puny! Am I worrying too much? I sure want to do this right.

Hand Drive, We rethought the problem (it looks like too much work to take 2 vaneer layers off the underside of 8' edge of the underlayment plywood--section would be 4-inches by 5-feet) and instead will bring the 3/8" underlayment from room #2 into room #1 by about 4-6 inches (the beam there is about 8-10" wide) and use a floor pre-mix leveler/patch to bring it up to the 23/32 in room #1.

Hope I am NOT clear as mud !!

Thanks for all your help! Katherine
Attached Images


WheelerGirl 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
Attach toilet flange to plywood subfloor, or on top of tile? jmai14 Plumbing 2 10-27-2012 06:37 AM
Attaching luan plywood to subfloor journeyman102 Flooring 5 11-17-2011 10:40 PM
Installing plywood or chipboard over 1X6 planking on a 52 year old house' roof. JBfromSD Roofing/Siding 2 09-20-2010 10:09 PM
Replacing Plywood SubFloor ... njchan Building & Construction 4 02-01-2010 04:57 PM
Installing Ceramic tile: Ditra over Vinyl or rip out and use 5/8 Plywood? ppieda Flooring 2 10-05-2007 11:01 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1