Thus, when we speak of , we are referring to the specific evaluation number and year that formally recognized this underlayment for use in French and European construction markets.

A standard subscription typically includes the initial software plus four quarterly updates to account for any changes in the technical and regulatory framework throughout the year. cd reef v4 cstb 2021

March 2021 – CSTB Technical Report No. 2021-09 Thus, when we speak of , we are