Close this search box.

Treadstone® FR30P Pre-Pour

Fire-Rated Underlayment for Pre-Pours

Treadstone® FR30P pre-pour underlayment provides an effective solution to pre-pour projects of underlayment between interior walls, and below locations of tubs, shower enclosures and other areas containing appliances installed before the installation of underlayments.


Requiring no sand, FR30P pre-pour underlayment gels quickly after pouring, and the slower flow and increased viscosity provide additional protection from potential leaks. FR30P maintains the fire resistive non-shrinking, fast cure properties associated with gypsum underlayments.

  • Designed for Pre-Pour Applications Only
  • Mixed onsite with no aggregate, reducing carbon footprint
  • Provides leak protection for floors below
  • Silicate free solution
  • Maximum pour depth of 1.5”
  • Requires little to no surface prep; prime with recommended primer, and pour
  • Provides enhanced Sound Attenuation (STC & IIC) between floors
  • UL listed in over 110 designs, for specific design or data contact us at
  • 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 #10117 – 80 lb bag, 49 bags per pallet

Data Sheets