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 12-12-2011, 01:50 PM   #1
Newbie
 
Join Date: Dec 2011
Posts: 6
Share |
Default

Attic flooring


I'm finishing an attic and the floor is 3/8 inch ply that is in no way smooth. I actually have 2 questions.

1) is 3/8" thick enough for, say, living room traffic?

2) I plan on using peel & stick carpet tiles on the floor. Would primed 1/8" or 1/4" hardboard atop the 3/8" plywood be a good surface to install the tiles on? I'm trying to do it on the cheap.

Thanks

Chestersthing is offline   Reply With Quote
Old 12-12-2011, 08:20 PM   #2
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,070
Default

Attic flooring


Hi Chester,

It all depends on how the space will be used, but if there's a potential for "normal" usage in the future, the minimum subfloor thickness should be 5/8". However since you already have 3/8", you should not go any thinner than 1/2" over what is there now. What are the joists' size and spacing? What is the span of the joists? How will the room be used?

So.........

Quote:
1) is 3/8" thick enough for, say, living room traffic?
Absolutely not.

Quote:
2) I plan on using peel & stick carpet tiles on the floor. Would primed 1/8" or 1/4" hardboard atop the 3/8" plywood be a good surface to install the tiles on? I'm trying to do it on the cheap
Nothing 1/8 or 1/4" is gonna add much strength. Waste of time and money. Going "cheap" usually cost too much in the end.

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 12-12-2011, 09:31 PM   #3
Newbie
 
Join Date: Dec 2011
Posts: 6
Default

Attic flooring


Quote:
Originally Posted by JazMan
Hi Chester,

It all depends on how the space will be used, but if there's a potential for "normal" usage in the future, the minimum subfloor thickness should be 5/8". However since you already have 3/8", you should not go any thinner than 1/2" over what is there now. What are the joists' size and spacing? What is the span of the joists? How will the room be used?

So.........

Absolutely not.

Nothing 1/8 or 1/4" is gonna add much strength. Waste of time and money. Going "cheap" usually cost too much in the end.

Jaz
Thanks Jaz, will pick up 1/2". Floor joists are 2x10's 16" oc. 1/2" finished 1 side should do the trick.
Chestersthing is offline   Reply With Quote
Old 12-13-2011, 08:29 PM   #4
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,070
Default

Attic flooring


Quote:
1/2" finished 1 side should do the trick.
Underlayment grade is usually called B/C pine with exterior glued veneers. Exposure 1 is another term. Just don't buy the cheap CDX sheathing. Sheathing is not for underlayment. Sheathing is to apply the exterior surface of your shed or garage.

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 12-14-2011, 08:15 PM   #5
Newbie
 
Join Date: Dec 2011
Posts: 6
Default

Attic flooring


Jaz
I was mistaken, the underlayment is 5/8". What should
I put on top to give me a nice smooth surface for peel & stick?
Chestersthing is offline   Reply With Quote
Old 12-14-2011, 08:41 PM   #6
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,070
Default

Attic flooring


OK, sounds better. So the 5/8" is the subfloor, (there is no underlayment, yet), and you say it's not in good shape. If it's flat and structurally good, I would be OK with 3/8" underlayment. Certain grades of 1/4" birch panels made for flooring underlayment will be fine too. Just don't buy cheap 1/4" ply and especially don't buy what is commonly known as luaun.

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
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
asbestos in our ripped up flooring?? 6fthook Flooring 16 07-29-2011 11:06 PM
Ventilating attic with two roofs senorbungle Building & Construction 2 01-09-2011 04:17 PM
Insulation, Ventilation in Cape Cod Side Attic Get'n er done Building & Construction 10 12-02-2010 11:38 PM
Attic fan options P550 Roofing/Siding 1 08-22-2010 12:47 PM
Re-flooring an Attic Bedroom gsgraber92 Building & Construction 3 01-18-2009 09:24 PM




Top of Page | View New Posts

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