A slab membrane is a type of waterproofing material that is used to protect the concrete slab of a building from moisture and water damage. Slab membranes can play a significant role in promoting environmental health, building health and building biology. A properly installed slab membrane can help prevent water damage and mold growth, which can have a negative impact on indoor air quality and the health of building occupants. Slab membranes can be made from a variety of materials including rubber, thermoplastic and modified bitumen. By choosing a slab membrane that is durable, non-toxic and has a minimal impact on the environment, building owners can help promote a healthier indoor environment for building occupants