Treadstone FR25 and FR30 Fire-Rated Gypsum Underlayment: CSI MasterSpec 03 54 13

Treadstone® FR25 and FR30 fire-rated gypsum cement underlayments are detailed for on-site mixing and pouring to create monolithic, fire-resistant floor surfaces with varying compressive strengths and acoustic benefits. The section outlines product specifications, installation by authorized dealers, comprehensive quality assurance procedures including slump and compressive strength testing, and extensive submittal requirements for project documentation and compliance.