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First, make sure your concrete surface is clean, dry and level. Then apply a moisture barrier to seal it. Apply an adhesive along the longest wall and place the first row of boards directly onto it. Continue applying adhesive and then boards, pressing the boards firmly against one other.
Apply blue painter’s tape every few feet to prevent the boards from slipping. Wipe away any excess adhesive with mineral spirits. Work from several boxes of boards at once to help blend any color variations, and stagger the seams as you go.