Lead Flashing

What Is Lead Flashing?

The basic term of a lead flashing is a piece of sheet lead metal that is installed to stop water penetrating a building. However, lead flashing can be broken down into many more descriptive terms such as: lead apron flashing, lead cover flashing, lead valley, lead box gutter, lead roof, lead capping and so on. The most common lead flashings on a roof are chimney flashings, which stop water penetrating through the roof between the junction of the chimney and roof.

Why Use Lead Flashing?

Lead has been used for decades as the premium material choice for flashing, as it has many advantages over many other materials:

Long Lasting

Lead has an incredible lifespan; it is not unusual for lead flashing to last over 100 years. Unlike all man-made alternatives which you would be lucky to get 10 years lifespan before they fail.


Lead is very malleable making it easy to bend into many difficult shapes and sizes to suit every application. Unlike hard metals which require special machinery to fold.

Ability to Overcome Difficult Details

As lead can be bossed or cut and welded, it can overcome pretty much any detail whilst not compromising the waterproofing and effectiveness of the lead. This cannot be said about lead alternatives, even copper, which is also a premium product, struggles when it comes to technical details.

Cost Effective

Whilst the initial outlay of installing lead flashing is generally more expense than other alternatives, due to the life span of the lead in the long run it actually becomes a cheaper more cost effective option.

Common Mistakes and Potential Issues with Lead Flashing

A correctly installed flashing should not have any issues throughout its lifespan, unfortunately if not installed correctly then the lead flashing can run into some issues. Lead should only be installed by experienced lead specialists as they are trained and experienced in all of the lead regulations and specifications to ensure a long-lasting product. Whilst some flashings can be relatively simple to install therefore many builders or roofers will take the work on, they generally are not knowledgeable in leadwork therefore unknowingly install it incorrectly. Some common mistakes are:
  • Over/under fixing
  • Incorrect code or thickness used
  • Incorrect jointing method
  • Over sizing of lead flashing
  • Minimum specifications not met
  • Thermal movement not allowed for
  • Incorrect fixings
Whilst these may seem simple mistakes to make, if just one of these mistakes are made the lead flashings life-span will be severely reduced. It is very important to ensure a competent lead tradesman is used when installing lead flashings.

Why Choose Bespoke Leadwork to Install your Lead Flashing

Between all the Bespoke Leadwork team, we have installed thousands of meters of all types of lead flashings. We are highly experienced lead specialists who understand all the current up to date lead recommendations and regulations to ensure the lead flashings last the distance. We offer a professional and friendly service whilst producing high quality workmanship. By choosing Bespoke Leadwork your can rest assured that you will getting a first class product.