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Treadstone® FR30

Fire-Rated Performance with Higher Strength
This advanced gypsum concrete formulation of Treadstone® FR30 gypsum underlayment includes the fire-resistive and high flow properties of Treadstone® FR25 , but with an additional compressive strength of up to 3800psi. 


This gypsum concrete formula is mixed onsite with locally sourced sand and water to provide a lightweight base that can host a wide variety of flooring. FR30 is characterized by its higher compression strength and durability, which can help save time and money on the job. Treadstone® FR30 gypsum underlayment is approved for use over concrete, precast, wood, and Treadstone® Sound Attenuating Mats (thickness limitations apply).

  • Compressive strengths up to 3800psi
  • Little to no surface prep, clean, prime, and pour
  • Fast Setting, light traffic in 1hr, normal traffic in 24hrs.
  • Dense, smooth surface
  • Provides enhanced sound attenuation (STC & IIC) between floors
  • Reduces carbon footprint
  • UL Listed in over 100 designs
  • Installed by a technically trained network of licensed dealers
  • Multi-family Construction
    • Apartments
    • Hotels
    • Condominiums
  • Residential and Single Family
  • Commercial Office Space
  • Renovation of old wood frame or concrete structures


  • Item #10101 – 80lb bags
  • Item #10101-SS – 2960 lb Supersacks

Data Sheets