Green Roof Case Study - Forestry Commission, nr Aberystwth

Client	Forestry Commission
Architect	Acanthus Holden
Main Contractor
Type of Development	Visitor centre within the Cambrian mountains, near Aberystwth
Reason for Green Roof	Planning requirement as the structure was in a forestry area and was required to blend into the background
Type of Roof	Index INSTA Extensive Green Roofing System
Size of Green Roof	350m²
Build up of Roof	Waterproofing Vapour Barrier - Index Prominent Alu. Insulation - Indexzone CFC&HCFC free ridid polyurethane insulation Underlay - Index 5mm Proteaduo SBS/APP composite membrane. Root resistant layer - Index 4mm Defend H anti root membrane (A specially formulated chemical root inhibitor) *Landscaping* Index water retention/drainage mat. Index organic substrate to a depth of 80mm. Index INSTA Extensive Planting System (containing up to 10 varieties of sedum) installed in 20mx1m rolls. Vegetation barrier of 20/40mm washed rounded pebbles.
Comments	A successful installation of two pitched roofs with slopes of up to 26% installed in atrocious weather conditons
Completion Date	June 2002