Root barrier foil
Root barrier foil is manufactured from hard-wearing material
that is resistant to moisture and root growth.
Application
A root barrier foil can be applied to a roof that does not have root resistant roofing to make the roofing root resistant anyway. Adding a root barrier foil will not make the roof waterproof.
Root barrier foil should be placed on the roof first, the green roof structure then follows. Make sure that the root barrier foil is well connected by means of an overlap of 50 cm.