Hi all
A quick question.
I’m putting down a plywood floor.
What I have is a pea stone base.
I plan to lay 2×4 pressure treated sleepers down on top of that.
I then will put a plastic vapor barrier down.
Next I will put down a layer of CDX and finally a regular layer of plywood.
Now the question.
When I screw the CDX down, should I just zip it in with screws as usual or should I put something in to seal the holes like Lexel.
Will it make any difference?
Any thoughts on this.
Jeff
Replies
I'm confused....What is this floor over? Is this living space...? Maybe I don't know how they do things in Vermont.
Interior or exterior? More info please.
Tom
DJ and Tom
Sorry I wasn't more specific.
What I have here is a full shed attached to a garage that needs to be turned into usable space.
The Garage is heated and used as shop space.
The shed is attached, built on ledge, with pea stone used to level it up and allow any drainage.
Was only used for shop storage, always dry.
Now being insulated, wired and heated in winter (when used.)
I need to come up with a simple work floor that floats on the pea stone, but strong enough to support power tools.
Don't have any way to build up a normal support as the floor height needs to match the garage floor.
I've done things like this before, and just used planking and the a layer of plywood, but this one is tight for space.
Usually I never screwed the planks to the sleepers, just the plywood on top to the planks. Weight kept everthing in place.
Have gone back years later, and the pressure treated held up well, with planks dry.
Trying to do the same with plywood, but think I need to screw it down to the sleepers this way.
I'm worried about moisture infiltration thru the screw holes.
Any thoughts here.
Oh, almost forgot, customer doesn't want concrete just wood.
Jeff
The floor is not insulated, right? I would worry more about air infiltration at the perimeter of the floor where it meets the walls than moisture going through the screw holes.
Tom
Tom
No, not insulated.
Any thoughts about the wall junction and sealing.
I hope to present this this week to the client.
Do it maybe in 2 weeks.
Jeff
Jeff, we are talking a lot of building science here about air infiltration, moisture migration, insulation, condensation all those stuffs even experts disagree from time to time. You said you have done it in the past with planks in similar situation and there were no problems, I would do the same and don't worry about those screw holes leaking.
Tom
Thanks Tom
Jeff