Green Roof Filter Fabric

Beneath the growing media and above the drainage system the filter fabric keeps the media from clogging up the drainage while allowing water to flow freely.

Green roof filter fabric. A filter fleece separates the drainage layer from the roof garden substrate in a green roof structure. They are also useful for encapsulating other components such as telescopic drainage tubes to reduce the amount of fines getting into them. The green roof does make sure that the durability of the roofing is extended. Enough filter sheet is set down over the roof so that at the vertical edges of the planting beds the sheet will be the same height as the substrate.

An important consideration with filter fabric is the flow rate while preventing media runoff. Optigreen separation fabric is a non woven geotextile made from recycled polypropylene. It prevents small soil particles from filling the drainage layer and so the water buffering function of the drainage layer remains intact for longer. Green roof solutions has a 3 5 oz filter fabric ff35.

Our greenroof root resistant filter fabric is 100 post consumer recycled nonwoven polyester and are manufactured using post consumer recycled material pcr chip. The function of the existing roofing is completely preserved. Root resistant filter fabric serves to prevent root penetration into the underlying roofing if it is not root proof. Polypropylene fibers are needled to filter fabric for a stable network that retains dimensional stability relative to one another.

Bmi canopia filter fleece. It s green even before its green our green vision is now even greener. Strong enough and adequate puncture resistance to withstand stresses of installing other layers of the green roof. Since it is significantly less likely to clog than common filter fabrics it is ideal for separating green roof soils from underlying drainage media or drainage plates.

Density as per astm d3776 8 oz yd2. Optigreen separation fabric weighs approximately 200 g m2 6 oz yd2. The fabric is resistant to degradation from uv exposure as well as the. This also determines the lifespan of the green roof.

Puncture resistance as per astm d4833 130 lb. The grs ff35 has a high flow rate of 150 gallons per minute per square foot. A layer of filter sheet will prevent substrate dropping into the drainage layer. Filter fabric generally needle punched non woven polypropylene geotextile with the following qualities.

Filter fabric is designed to separate the growing media from the drainage system on vegetative green roofs. Beneath the growing media and above the drainage system the filter fabric keeps the media from clogging up the drainage while allowing water to flow freely. Green roof solutions has a 3 5 oz filter fabric ff35.