Roofing

Butterfly Roof

A butterfly roof has two roof planes that slope inward toward a central valley rather than outward from a central ridge.

The profile resembles an inverted pitched roof. Rainwater concentrates at the internal valley, making the lining, outlets and overflow strategy particularly important.

A butterfly roof may be proposed for a contemporary Edinburgh extension or encountered on a later building. Its distinctive shape can admit light or suit a design concept, but the roof structure and drainage need to work together.

When investigating a leak, inspect the full central valley and the route to the outlet. Water entering at one point may appear inside some distance away.

Property types

Commonly found in

Tenement Georgian Townhouse Victorian Villa Terraced House Georgian Flat Converted Flat Detached House Semi-detached House

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