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

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-16-2011, 08:20 PM   #31
Newbie
 
Join Date: Nov 2011
Posts: 21
Share |
Default

Subfloor Overhaul - Advice Needed


Ahhh, I really should have went with my gut about the plywood - the guy was very convincing. Guess I shouldn't trust any of them Fortunately, all I did was cut and lay the plywood down - no screwing or gluing yet. I will definitely change it out to better quality. I want everything done correctly.

As for the tile installer, he has his own company and has been doing it for years but knowing everything you've explained to me, I'm questioning his knowledge. I have another company coming to give another estimate tomorrow afternoon, we'll see what they say! Again, I want it done correctly.

Thanks for your input! Very much appreciated

kadams2345 is offline   Reply With Quote
Old 11-16-2011, 09:29 PM   #32
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 9,649
Default

Subfloor Overhaul - Advice Needed


Just for what it is worth...

The tile industry headed up by The Tile Council of North America says to never use 1/4" plywood in a tile installation anywhere for underlayment. It does not have enough plys, it de-laminates under moisture conditions from the thinset, it offers no structural value. After extensive testing it has been determined that 3/8" plywood "underlayment grade" is the thinnest plywood that should be used. "Sheathing grade" plywood is also unacceptable because it contains interior voids that you cannot see in the laminates of the plywood.

Any professional tile installer that follows the standards of the TCNA would have this information and be preaching it.
Bud Cline is offline   Reply With Quote
Old 11-17-2011, 04:39 PM   #33
Newbie
 
Join Date: Nov 2011
Posts: 21
Default

Subfloor Overhaul - Advice Needed


I had another guy out today to give me an estimate and got a lot of bad news. Apparently, the blocking that I did around the area of subfloor that I took out is unnecessary and against code It's partially my own fault for attempting this DIY project. Looks like two joists will need to be sistered the entire length of the beam...I didn't do it for the entire length, maybe 3/4.

He's going to be sending me an estimate tonight...I'm very afraid of what it's going to be.

This is my last major DIY project - I just want it done correctly and I'm obviously not the one to do it
kadams2345 is offline   Reply With Quote
Old 11-17-2011, 07:06 PM   #34
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 3,959
Default

Subfloor Overhaul - Advice Needed


Gee......sorry to hear that. However......... something that is "unnecessary" shouldn't be against code....usually. To moi unnecessary means either a waste of time or it made it better than necessary.

Can you xplain what it is? Is it visible in the photo you posted?

Jaz
__________________
Tile 4 You LLC Troy, MI

DITRA Installs - KERDI Watertight-Mold-Free Showers. I have NEVER made a mistake, I thought I did ONCE, but, I was WRONG! A+ BBB rating - est. 1987 - over 50 yrs. exp.
JazMan is offline   Reply With Quote
Old 11-17-2011, 07:10 PM   #35
Newbie
 
Join Date: Nov 2011
Posts: 21
Default

Subfloor Overhaul - Advice Needed


The blocking can be seen in the picture on posting #17 of this thread. It is mainly just 2x4s that go between the joists so the plywood can be secured around the entire sheet. From my understanding, the blocking was necessary for this very reason. According to this contractor, it is not.
kadams2345 is offline   Reply With Quote
Old 11-17-2011, 07:22 PM   #36
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 3,959
Default

Subfloor Overhaul - Advice Needed


Well yes those 2x4" were not necessary when you're installing a second structural sheet over the subfloor and offset it. But what makes them against code, or is it something else?

Jaz
__________________
Tile 4 You LLC Troy, MI

DITRA Installs - KERDI Watertight-Mold-Free Showers. I have NEVER made a mistake, I thought I did ONCE, but, I was WRONG! A+ BBB rating - est. 1987 - over 50 yrs. exp.
JazMan is offline   Reply With Quote
Old 11-17-2011, 07:29 PM   #37
Newbie
 
Join Date: Nov 2011
Posts: 21
Default

Subfloor Overhaul - Advice Needed


He was saying that if there was a home inspection that it would fail not neccesarily because of the blocking (although he deemed unnecessary) but because of the 3/4 sistering of the joists on both sides of the picture from post #17 (below shower and below wall where toilet used to be). The 2x4s that I installed are very firm and not going anywhere but I guess technically they need to span from beam to beam.
kadams2345 is offline   Reply With Quote
Old 11-17-2011, 07:31 PM   #38
Newbie
 
Join Date: Nov 2011
Posts: 21
Default

Subfloor Overhaul - Advice Needed


Can you explain a little more in-depth when you say "2x4" were not necessary when you're installing a second structural sheet over the subfloor and offset it."

What is meant by offsetting? From all the online research I've done (and I'm not saying all of it accurate), most of it states that it needs the blocking so that every edge/side can be screwed in.

Thanks!
kadams2345 is offline   Reply With Quote
Old 11-17-2011, 07:40 PM   #39
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 3,959
Default

Subfloor Overhaul - Advice Needed


Most homes since the mid 70's are built with a single layer of 3/4" ply or OSB, some have 5/8" ply. All subfloor grade ply is t&g. So, with a single layer all edges need to be supported as you did when the t&g is cut for repairs etc. When you have a double layer to make a subfloor as you do, blocking the first layer isn't necessary since the second will bridge all joints.

Jaz
__________________
Tile 4 You LLC Troy, MI

DITRA Installs - KERDI Watertight-Mold-Free Showers. I have NEVER made a mistake, I thought I did ONCE, but, I was WRONG! A+ BBB rating - est. 1987 - over 50 yrs. exp.
JazMan is offline   Reply With Quote
Old 11-19-2011, 01:02 AM   #40
Registered User
 
Join Date: Mar 2009
Posts: 9,968
Default

Subfloor Overhaul - Advice Needed


k2345, I think you did a great job with the blocking. The subfloor ply (1/2") and the underlayment ply (1/2") would both deflect at the wall perimeter between joists without the blocking when stepped on there. As Jaz said- no flex between joints (in the field) with them staggered but both layers break there (between joists) at the wall....

The sistered 2x4's are nailed to existing joists under the walls? If so, it's not against code. Unless you had an engineer draw it up and you didn't follow that...lol.

Try to add a few more HVAC straps under the flex ducting for better air-flow. It appears to be restricting it there.

Gary

__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Advice Needed on [UK] Home Repair Bill cookerz Building & Construction 1 01-09-2010 08:53 PM
Double Door Alignment Advice Needed Lovegasoline Building & Construction 6 12-15-2009 01:32 PM
Needed basement advice... gripp2020 HVAC 4 11-28-2009 11:43 PM
Home electrical advice needed jiminy Electrical 11 12-14-2007 03:13 PM
bathroom floor tile job advice needed dbrew Flooring 14 01-23-2007 07:03 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.