When any part of a roof meets a vertical surface or abutment as with an extension, roof window or a dividing wall between two terraced properties, the joint between the vertical surface and the roof covering needs to be sealed against leaks. Lead is usually used for this and when lead is worked and installed in this way it is called Lead Flashing.

Lead is used because it is a very durable material which has the ability to expand and contract with varying temperatures. This is essential on a roof which is quite obviously open to all elements.

Lead can also be worked into the most complicated of shapes. When lead is worked into different shapes to suit different roof applications, the process is called Dressing.

As well as just providing flexible cover for joints in the roof, lead can be used as gutters and coverings for complete roofs. Lead is extremely resistant to atmospheric corrosion, is a great sound-proofer, protects against radiation and offers no dangers to the effects of lightening.

Leadwork and Flashing