A Green Roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproof membrane. It may also include additional layers such as a root barrier, drainage, and irrigation systems.
Our needlepunch synthetic and wool felts for the Green Roof industry are produced from 100% recycled fibers, affordable with high performance for protection and separation.
BIT offers three styles of felt for the Green Roof industry:
Protective needle-punch felt: Used for cushioning waterproofing membranes. 8oz. or 12 oz. felts are used as an underlayment for other protective layers such as drainage panels. 16 oz. felts are used when gravel or soil will be placed on top.
Separation needle-punch felt: Our felts have good permittivity, allowing for free water flow. The low tensile strength allows roots to readily penetrate. This felt is also used to facilitate the distribution and storage of water within the root zone.
Growing media needle-punch felt: Soils are often not good for growing plants in certain environments. Our felts are used as a “soilless” growing media to improve aeration and drainage.