Dry fixed ridge, hip and verge systems for slating and tiling.

BS 8612 sets the minimum quality and performance criteria for dry fix products.

The British Standard for Slating and Tiling.

BS 5534 provides the industry with guidance on best practice, relating to the installation of a roof.

Code of practice for the control of condensation in buildings.

BS 5250 describes the causes and effects of surface and interstitial condensation in buildings and gives recommendations for its control.