Why important

Flashing describes the material used to form the watertight junction between two different materials. For example at the junction between a slate roof and a stone gable wall, or at the change of plane of a roof at a ridge, hip or valley.

These junctions are often where roofs fail and water gets in. The traditional materials used at these junctions are sheet lead or zinc flashings.

There are two different types of flashing, which can be identified as follows:

• Abutment Flashing – Where the roof meets a stone wall or chimney, there are three ways of keeping the water out:
• mortar fillet or skew
• lead soakers
• Lead Watergate Flashing

===== How to fix ===== The treatment of each type is covered on its own page, therefore selected the heading that you need to find out more.