COMPARISON CHART
Installation guide
Technical drawings
PERMAVENT LTD
11 Cumberland Drive
Granby Industrial Estate
Weymouth, Dorset
DT4 9TB
Tel: 01305 766 703
Fax: 01305 766 704
post@permavent.co.uk
250 autumn 5.5 mm
green roof
180 sand 3.0 mm