Ex Vat Inc Vat

Drainage Board

Drainage boards are designed to prevent the green roof from becoming saturated. They are alternatives to the standard gravel layer which is much heavier.

 

They are also designed to retain water which helps during dry seasons providing water storage in the cups.

 

The drainage boards come with a protective fleece which prevents the substrates from being washed out.

 

These boards are made from recycled high density polyethylene and are available in many sizes.

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