06 May 2025

SPRA NFRC Technical Guidance - Stone Mineral Wool Insulation for Flat Roofing

This document provides guidance about the use of stone mineral wool insulation products with sufficient compressive strength for flat roofing applications. Additionally, it highlights how adding a facing, cutting, and/or laminating a board may affect its compressive strength, dimensional stability, Reaction to Fire classification and/or conformity with the original manufacturer’s Declaration of Performance.

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