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Treadstone® R1 Sound Mat

Treadstone® R1 Sound Mat utilizes our new Q-Seam Technology, which provides a robust foundation for the underlayment and ensures proper installation.


Treadstone® R1 Sound Mat utilizes our new Q-Seam Technology. This advancement provides a robust and monolithic foundation for the underlayment and ensures proper installation. Underlayments are typically installed with seams abutted and taped together, but this method often leads to small gaps being left after taping. These unsupported gaps will push down as the underlayment is applied, providing a point of direct contact between the underlayment and the sub-floor assembly. These valleys destroy acoustical performance and can lead to premature floor failure. Treadstone® R1 Sound Mat’s innovative Q- Seam Technology addresses this issue by ensuring each seam is tightly overlapped and fastened during installation.


(When tested per ASTM D1261).

Loading the floor to the point where this compression is possible will most likely cause more damage to the subassemblies than the underlayment itself. The building may well come down before the underlayment moves. Unlike typical monofilament mats, The R1’s rigid structure also resists localized compression under the weight of small point loads. This compression reduces the dead air required for proper sound attenuation and increases contact surface area between the mat and the floor, resulting in a reduction in acoustical performance. The new R1 easily supports these loads from common items like loaded cabinets, refrigerators, washers, and other heavy appliances and furniture, ensuring that they will not impact acoustical performance.


  • With ¾” Treadstone® underlayment, the system can reduce impact noise (IIC) up to 12db in wood framed assemblies.
  • Polypropylene barrier fabric•1/8” thick, total system thickness as thin as 7/8”.
  • Industry leading compression resistance
  • UL listed in over 100 floor ceiling designs
  • Installed by a network of technically trained licensed dealers

Treadstone® R1 Sound Attenuating Mat in conjunction with an approved Treadstone® Underlayment, is recommended and approved in:

  • Multi-family construction- apartments, hotels, condominiums
  • Residential and single family homes
  • Commercial office space
  • Renovation of old wood frame or concrete structures



Rolls, 370sf per roll, 8 rolls per pallet

Data Sheets