Green Roof Drainage Layer Thickness

The green roof drainage layer thickness depends on your needs.

Green roof drainage layer thickness.

The growing substrate must be kept separate from the drainage layer with a filter sheet. The clay and silt content of materials used in a rock aggregate drainage layer should be 10 per cent by mass. Our permaseal 20p membrane functions as both a drainage layer and as a reservoir see image above. 353 0 42 9692 333.

Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. Made of recycled non rotting polyester fibers for water and nutrient retention as well as a protection layer. For a biodiverse green roof the various vegetation options above can be combined to help create different habitats. The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall.

Bitumen resistant biologically and chemically neutral heat resistant. Moisture retention and protection mat for extensive green roofs and ballasted roofs. The capacity of these dimpled membranes vary depending on your green roof requirements. The nominal thickness of a green roof is the approximate total height of the soil and drainage components that constitute the green roof system excluding the roof structure insulation waterproofing and plants it is common practice to use the term extensive to describe green roofs that are very thin and will only support hardy drought resistant vegetation.

Older green roofs often used a permeable layer of rock aggregate such as scoria or gravel for drainage. Bauder ltd o duffy centre cross lane carrickmacross co monaghan t. It can be used in both extensive and intensive green roof systems on houses sheds garages and larger commercial projects. Also the green roof drainage layer material is made to be sturdy and strong so that piercing can be limited and that the integrity of the entire program can be retained with ease.

Protection drainage and filtration. The rock aggregate should also have a. Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. 44 0 1473 257671.

At permagard we stock an 8mm and 20mm cavity. Bauder ltd 70 landseer road ipswich ip3 0dh t. Bauder sdf drainage layer material of the drainage layer polyamide monofilament weight of the drainage layer 400 g m. Manufactured from premium hdpe it provides a drainage layer and filtering layer all in one membrane.

The green roof drainage layer thickness makes sure that nothing can go wrong below offering a solid and effective guard.