DURA-SON® for hardwood floors

Installation instructions

APPROVED ASSEMBLY OF SOLID HARDWOOD FLOOR WITH PLYWOOD

  • Make sure subfloor is clean, dry, and flat. If some areas require fill patching or leveling use a self leveling underlayment.
  • Must check subfloor for excessive moisture. If a moisture barrier is required use DURA-SON MB or a suitable vapor barrier or moisture sealer.
  • Loose lay Dura Acoustical Underlayment on subfloor, do not glue.
  • Make sure Dura Acoustical Underlayment covers the perimeter of the entire subfloor and around any protrusions.
  • Always install black side down.
  • The Dura Acoustical Underlayment seams must be placed tightly together and taped with duct tape. (If using DURA-SON-MB use a vapor barrier tape)
  • Loose lay the first layer of plywood (3/4”) over Dura Acoustical Underlayment.
  • Install second layer of plywood (1/2”) on top of the first layer of plywood. The top layer of plywood must be perpendicular to the bottom layer, joints gapped and offset, top sheet glued (full coverage, non water based adhesive) to bottom sheet. The top layer fastened with 1” #8 flat head wood screws every 12” with no penetration of the Dura Acoustical Underlayment.
  • Nail down hardwood floor over the plywood without penetrating the Dura Acoustical Underlayment.

THIS INSTALLATION WILL CREATE A FLOATING HARDWOOD FLOOR OVER A PLYWOOD ASSEMBLY OVER DURA ACOUSTICAL MEMBRANE.