Water Retention Roof

However a purple roof retains more water than any other green roof concept.

Water retention roof.

The water only remains on the roof for a short period of time after rainfall. We need to think differently about the main purpose of a green roof. Together they form the drainage layer of the ecological roof. High level of reduction of of water discharge during high intensity rainfall whilst retaining good drainage even for large roof areas peak discharge.

Suitable for blue roofs. The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall. Drainage and water retention element. Water retention is really important in case of pitched roofs because their drying trend is more pronounced.

Delta garden roof system with floraxx water retention drainage membrane for garden roof systems a safe foundation for all herbaceous roofs. Green roofs are multi layered systems that cover the roof of a building with. Protection and efficient use of fresh water integration of natural water retention measures in river basin management. The purple roof is the only concept that has been exposed to real life assembled testing in a professional setting.

Such an extensive green roof will have a water retention capacity up to 44 l m and a surface weight in water saturated condition about 130 kg m. The rainwater is drained off at a delayed pace using a narrower lower situated opening. Water storage and discharge delay. 0 01 0 17 at 2 roof pitch.

Core to the purple roof concept is making green roofs a true stormwater management tool by incorporating retention and detention. The water needs to be drained off to create sufficient storage capacity in time for the next rainfall. Rain falls onto a relatively dry green roof and the green roof absorbs the water usually in pore spaces later the sun comes out and the plants use the rainwater to evapotranspire. They have to be mounted linked to each other and floating over the protective layer of the waterproofing.

We believe the owner should see a return on investment of a green roof beyond merely meeting regulatory requirements. System solutions with defined water retention. Retention works like this. This means that the water leaves the roof as vapor.

This frees up space for maximum real estate potential while realizing all other benefits such energy savings biodiversity habitat creation and. Thanks to its unique dimple structure and its innovative design its functions include. M roof deck delta garden roof system this innovative dimpled sheet has been developed specifically for green roofs. These elements have high retention capacity and can be used for extensive and intensive green roofs with car traffic heavy vehicles etc.

Yes every green roof absorbs and buffers water. Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. This type of water roof is called a water roof for rainwater retention.