There are a number of green building certification programs and rating systems. Some focus on energy reduction, some focus on occupant health, and others try to cover it all. We review the various rating systems for sustainability, resiliency, and health.
Membrane roofing is often used on commercial flat roofs. Common flat roof membranes discussed in this article include built-up asphalt (tar and gravel), modified bitumen, and single-ply membranes like EPDM, PVC, TPO, and KEE. We also cover spray applied foam and liquid roofing options.
Pressure treated wood (or another kind of treatment) should be used if wood is exposed to moisture so you can prevent wet-rot, dry-rot, and insect infestation. We discuss treatment options, specifications, and health hazards.
A review of the three major red lists used to help architects and users identify safe building materials: the Living Building Challenge Red List, The Perkins & Will Precautionary List, and the Cradle to Cradle material certification.