installing interior framed walls

gerry422April 3, 2013

I have a small basement less than 500sq ft and have layed the subfloor, Platon by Armtec. I have the concrete exterior walls insulated with styrofoam and the framing done along the exterior which is screwed into the concrete floor.
The floor slopes about 3 inches from the outside wall to the center where the drain is. I want to add 3/4 inch plywood atop the Platon subfloor and then carpet. I plan on shimming the plywood floor to level the floor. By doing this the concrete floor will have a slope but the interior floor will be level. So there will be a gap between the Platon subfloor and the plywood floor.

My question is should I lay the plywood floor first and then attach the inside wall studs to the plywood? Screwing the floor studs to the plywood not into the concrete.
Or should I install the interior wall studs from ceiling to the subfloor, ie concrete, and the plywood floor would be still shimmed until level up against these walls.

This post was edited by gerry422 on Wed, Apr 3, 13 at 10:09

Thank you for reporting this comment. Undo

inside wall studs

Assuming this refers to dividing walls for rooms, I would anchor the baseplates to the floor directly to be sure they are secure. Placing the baseplates on top of strips of 1" XPS provides a thermal break and protects them from any minor flooding.

    Bookmark   April 3, 2013 at 12:42PM
Thank you for reporting this comment. Undo

If I understand you correctly, the baseplates for each interior wall should be anchored thru the 3/4 plywood all the way into the concrete. I do not know what XPS is.

    Bookmark   April 3, 2013 at 11:11PM
Thank you for reporting this comment. Undo

I should have been clearer. I would anchor the baseplates to the concrete first, then add the plywood later for the reasons I mentioned above. This is not to say that this is the "right" way. XPS is the abbreviation for extruded polystyrene.

    Bookmark   April 7, 2013 at 12:59AM
Thank you for reporting this comment. Undo

You might want to consider flattening the floor before doing anything else.

Shimming out a below grade floor is a PITA.
You need pressure treated shims and treated plywood also.

Despite the membrane you have to worry about condensation rotting out the wood.

" Platon creates an impermeable vapour barrier"

Here is a link that might be useful: Platon

    Bookmark   April 22, 2013 at 12:21PM
Sign Up to comment
More Discussions
Basement tile grout sweating
Hi Experts, We have a new house (1 year old, Hamilton,...
Joe Regular
Str'l Wood Floor + CrwlSpace vs Concrete Slab
Hello, We were discussing our plans with a builder...
How to re-do the stairs for my basement remodel
So I'm undergoing a simple remodel of a small basement....
water seeping through floor?
I have a finished walk out basement. After several...
New Home Build - window size for drywall?
Apologies if this has been asked before - can't seem...
Sponsored Products
'Girlfriends' Wall Art
$5.99 | zulily
WallsNeedLove African Print Self-Adhesive Wallpaper - WP120-8FT
$66.00 | Hayneedle
Hampton Bay Track Lighting 3-Light White Linear Track Lighting Kit EC5150WH
$51.97 | Home Depot
Rounded Frosted Glass Bathroom Shelf
Wooden Roman Numeral Outdoor Wall Clock
$166.00 | Bellacor
Nautilus 32" Round Brezza Wall Mirror
Lamps Plus
Bruck | Enzis Track - 6' Section
$109.50 | YLighting
Bow Top 40" High Bronze Oval Wall Mirror
Lamps Plus
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™