You usually determine this.
Fitting a wooden floor on concrete.
Alternatively screw rows of treated 1x4s to the concrete 16 in.
Adding a subfloor over the concrete slab is one installation method.
Construct a subfloor with sheets of 3 4 inch pressure treated plywood over the moisture barrier.
Things you ll need step 1.
Dry the slab before you prepare the concrete for hardwood flooring it must be dry.
Before installing any wood floor over concrete you ll need a moisture barrier.
Hardwood floors are durable low maintenance and easy to clean.
Typically it is sheets of plastic laid on the slab and taped at the seams with waterproof tape.
Installing hardwood flooring over concrete.
Nail wood flooring planks.
Treated plywood to the concrete with concrete screws spaced every 16 in.
Add moisture barrier once the slab is dry cover it with a moisture barrier consisting of two layers of tar.
It will extend up the wall for about 2 to 3 inches creating a bowl where your wood floor stays dry and protected.
Watch this video to see how easy it is.