Nsfs 347 2021 Best -

Roofing membranes, such as those from manufacturers like Duro-Last , earn points based on their adherence to these criteria. They are then awarded one of four certification levels: Silver Gold (e.g., the white Duro-Last membrane) Platinum Importance in Sustainable Building Ralph M. Paroli - Standards Council of Canada

Encourages the use of sustainable materials and design for longevity. nsfs 347 2021

Focuses on the service life and resilience of the roofing system. Roofing membranes, such as those from manufacturers like