Green Roof Drainage Layer

Buy green roof materials from substrate and sedum to drainage board as well as our modular grufekit tiles systems.

Green roof drainage layer.

During a dry period the water stored can be reabsorbed by the vegetation layer above. It is made of a filtration veil and the polyamide monofilament fibre network layer. The drainage layer has an important role to play in the total system structure of a green roof. A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems.

The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall. Drainage is installed as a continuous layer over the entire surface of the green roof. Sedum supply have two types of drainage layer 12mm and 20mm. Buy green roof drainage systems from 9 50.

The green roof drainage layer thickness makes sure that nothing can go wrong below offering a solid and effective guard. It buffers water and allows excess water to drain away. Cup style drainage sheets should be overlapped to eliminate the possibility of gaps being created between sheets. The drainage also contributes to good aeration of the plant roots.

Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although. Other plastic drainage types should have adjacent sheets butted together. Our own uk green roofing system is a blend of high quality substrate soil drainage board and sedum or wildflower blankets.

Drainage layers are used to provide a roof drainage system when installing a green roof. Protection drainage and filtration. Storm water management for sedum and wildflower green roofs. Drainage layer the green roof drainage layer provides you with a way to ensure there is nothing getting through and that excess water is drained away to avoid any waterlogging or increase in weight on the roof.