Removing the Existing Floorboards: Start by carefully lifting the current floorboards to uncover the space between the wooden beams (joists) underneath.
Fitting Insulation: Place Rockwool RWA45 100mm insulation snugly between the joists, situating it at the bottom of the now-visible cavity.
Installing the Structural Floor: Lay down the 22mm STS No More Ply board as the new base of your floor. Arrange these boards in a staggered, brick-like pattern, ensuring their ends rest on the joists for support. If required, add extra small timber pieces (noggins). Secure the edges where the boards meet with STS bond adhesive and apply acoustic sealant along the edges where the floor meets the walls. Secure the boards with STS screws that are designed to work with this type of board.
Adding the Tecsound Layer: Roll out Tecsound 100 over the STS Board. Ensure it covers the entire floor, with the edges of each roll butted up against each other. Use joint tape to securely join these edges.
Laying DB Matting: Over the Tecsound, install DB Matting 15. Use F3 Adhesive to bond the matting to the Tecsound layer. Apply the adhesive with a 3mm notched trowel and lay the matting in the same staggered pattern, ensuring it fits tightly against the walls. If there are any small gaps around the edges, fill them with acoustic sealant.
Preparing for Wood Flooring: Before installing your wood flooring on top of the DB Matting, check with your flooring supplier for any specific instructions. Many wood floors can be installed directly over the DB Matting if the base floor is level. Depending on the type of wood flooring, you may need to bond it down or just glue the joints.
