Our thin wood wall paneling on interior installation can be done with one or the other or both. We recommend using polyurethane construction adhesive from a caulking gun. Ideally you would use that and as few nails as possible. Only use 18 gauge brad nails and where you need them to hold until the adhesive can cure. The glue will hold better than nails and look better. You can see our options for different blends of the wall and ceiling barn wood planks in stock and pre boxed for easy shipping.