Green Roof

Green roofs add weight, water and planting to a flat roof, so upstands, edges and drainage need careful detailing. This category includes modular green roofs on timber flat roofs, a green roof meeting a masonry wall, green roof upstands, parapets, kerbs and drainage outlets, and rooflights and walk-on skylights set into green roofs.

What should I check before specifying a green roof? The extra load on the structure, the waterproofing and root barrier, drainage and outlets, and the fire performance of the roof build-up. Ask the green roof manufacturer for their system details.

Can I put a rooflight in a green roof? Yes. There are details for a rooflight in a modular green roof and a walk-on skylight with a green roof.