Solid parquet hardwood flooring can be glued directly to a concrete slab on grade or above grade with the use of a manufacturer recommended vapor retarder.
Timber overlay flooring on concrete.
A concrete sub floor is in many ways an ideal surface for laying an overlay wood floor.
What you want to avoid is lumps and bumps in the subfloor that could cause problems to your final look.
It is imperative that you make use of underlayment which can increase the height of the floor by around 40mm.
Secure loose boards with deck screws and fill open seams with rapid setting polymer modified concrete.
Solid overlay timber flooring is a product designed for applications where the beauty style and warmth of a solid timber floor is important but there are limitations on the area s sub floor or the application requires a floor thinner than traditional solid structural timber flooring.
However there are certain points you simply must respect.
Before installing flooring over concrete supporting slabs should be dry with a moisture content no more than 5 5.
Boral overlay is designed to be glued down directly over concrete 80mm width only existing timber plywood or particle board.
Wood substrates should have a moisture content no more than 14.
Replace any weak or water damaged wood.
It is important that the additional height won t be a problem on your cabinet and your doors.
Solid parquet should not be installed below grade.
It is supplied in blocks 260mm long x 65mm wide x18mm thick.
Boral parquetry can be laid in many patterns using contrasting timber species to create depth in design.
First and foremost you need to make sure that the concrete is in good condition generally.
If you are going to compare installing solid timber flooring on concrete slab relative to a wood subfloor the former is more complicated.
The sub floor must be free of deflection l 360 considering both live and dead loads.
Boral overlay is designed to be glued down directly over concrete existing timber flooring or boral plywood as long as the existing floor is clean dry and flat.
Seal the slab with a waterproofing compound or a plastic membrane under plywood if in doubt or if there is evidence of previous water penetration.
Prepare by sanding down to clean bare wood.