Green Roof Root Barrier Thickness

These may not be required if the waterproof membrane is certified as root resistant.

Green roof root barrier thickness.

Of course this is not all that you might have in your roofing. Then i looked at conflicting information on the suitability of epdm for green roof applications and determined that 1 firestone rubbergard 60 mil. 25mm 1 thickness is standard for thin extensive roofs 40mm 1 5 is recommended for enhanced water storage and drainage on thicker extensive roofs and semi intensive roofs and 60mm 2 5 is available for maximum water retention on intensive roofs. Optional item if non root resistant waterproofing used.

Three thicknesses of drainage plates are available to meet the drainage and water storage requirements of almost any green roof. It is ideal for systems that have typical green roof plants such as sedums which have shallow roots and will not present a lot of penetration pressure. Additional green roof layers. Drainage mats nominal thickness.

Thicker welded root barriers will be needed for green roofs involving trees bamboo or other vigorous spreading grasses. Grs root barriers come in 20 mil 30 mil and 40 mil thickness depending on the application. The root barrier membrane is suitable as a separation layer for use in single ply green roofs intensive roofs and under domestic driveways. 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.

Rb20 is the most common root barrier product used for extensive green roof systems. Root barrier the root barrier is the system that avoids the membrane underneath from being pierced and penetrated by roots ensuring that the system can remain in top shape for as long as it possibly can without needing any adjustments or changes. Epdm is fll certified for green roofs and 2 if we ensured that seams were properly sealed and we installed a root barrier an epdm roof is likely to perform well. The most common root barriers used are thin polyethylene sheets laid over the waterproofing membrane.

Safeguard root barrier is simply loose laid on top of the primary waterproofing layer before subsequent green roof layers drainage layer filtration layer etc are laid on top. Grs root barriers do not contain plasticizers which can migrate to the surface and react with roofing membranes.