Subfloor Replacement - Prepping For Hardwood - Flooring - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 06-01-2012, 05:28 PM   #1
Join Date: Feb 2009
Posts: 151
Rewards Points: 109

Subfloor replacement - prepping for hardwood

Pulled up the carpeting in the upstairs bedrooms and confirmed what I had learned when redoing the master bath and feared the same was going to be upstairs - the so-called subfloor is 1/2" C-D plywood that's not T&G and has no blocking between seems perpendicular to the joists.

I am looking to put down 3/4" subfloor, probably Advantech. The room I am starting in (which will be my son's nursery ) is 12x12'. I can cut out the old plywood, install blocking between the joists to support the edges, glue and screw the subfloor. A bit of a PIA, but I have done it before and aside from carrying the OSB panels upstairs it shouldn't be that bad.

The problem is that I don't think I can install blocking at the ends which are parallel to the joists. The last joists are 8" from the wall on one side of the room and 6" on the other. The joists are 16" OC.

I know 1/4" plywood is not structurally sound, but do you think I can get away with leaving the strips of old C-D plywood along the two sides and adding 1/4" B-C on top, making sure I

- glue it
- screw it
- stagger the joints

Thoughts?? The hardwood I am planning on putting down is likely 3 1/4" - 4" wide 3/4" thick solid HW and will run perpendicular to the joists.



BimmerRacer is offline   Reply With Quote
Old 06-01-2012, 05:42 PM   #2
Join Date: Nov 2011
Location: Hartfield VA
Posts: 34,584
Rewards Points: 14,300

Going over it with 1/4 would be a waste or time and money.
Two options, go over the 1/2 with the advantec or remove the 1/2 and install the Advantec.
There is no need for blocking at the seams if you use Advantec.
Use constrution adhesive and screw it down with ceramic coated decking screws, it will be more then stuff enough.


joecaption is offline   Reply With Quote
Old 06-01-2012, 09:41 PM   #3
Join Date: Feb 2009
Posts: 151
Rewards Points: 109

I am not planning on blocking the seems with Advantech. My concern is with the unsuported edges which run along the joists.
BimmerRacer 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
prepping for painting on NC home carpenal Painting 13 03-29-2011 11:19 PM
prepping painted basement floor for new epoxy katiepalm Painting 2 11-23-2010 11:00 PM
Prepping Wood for Primer: What Grit Sandpaper? Lovegasoline Painting 2 09-14-2009 10:38 AM
While prepping my walls with TSP - paint bubbled! nikolita Painting 5 12-29-2008 12:29 PM
Any DIY's of cleaning and prepping oil furnace for winter? tripower HVAC 1 10-15-2007 06:54 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1