You usually determine this.
Putting down wood floor on concrete.
Do not fasten and leave 3 4 of an inch of space between the wall and plywood.
There are three ways to lay a floor over concrete.
First position the plywood layer with its edges parallel to the wall.
Treated plywood to the concrete with concrete screws spaced every 16 in.
Alternatively screw rows of treated 1x4s to the concrete 16 in.
Things you ll need step 1.
Plywood panels should be set down with 1 8 inch gaps between sheets.
How to put a wood floor on concrete moisture check.
The most straightforward method is not to attach it but float the floor on top.
Add moisture barrier once the slab is dry cover it with a moisture barrier consisting of two layers of tar.
Follow these steps.
How to install hardwood over concrete 3 methods.
Tap 1 4 inch shims in between the edges of the floor and the wall to leave room for expansion image 3.
Experienced professionals pay close attention to managing moisture and minimizing wood floor expansion and contraction when preparing to install hardwood floors on concrete slabs.
Dry the slab before you prepare the concrete for hardwood flooring it must be dry.
Place the second layer perpendicular or at a 45 degree angle to the first layer.
Despite a successful moisture check and the presence of an underground moisture barrier you still.
Builders typically lay down a vapor barrier before they pour a concrete slab.
Weight down the first few rows with something heavy but use a rag underneath the weight to protect the floor.
Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring.
You can attach it directly to the concrete or install a subfloor first and then attach the floor to that.