Code 4 Lead Flashing 240mm x 3m
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Product Details
Code 4 lead flashing 240mm x 3m is a roll of malleable lead sheet used to create waterproof joints on roofs, typically where a roof meets a wall, chimney or extension upstand. The Code 4 rating means it has a medium thickness and weight, making it flexible enough to dress by hand or with basic tools, while still durable for long-term weather protection. At 240mm wide, it suits standard cover flashings where you need a good upstand into the brickwork and a decent overlap onto tiles or flat roofing. The 3m length is easy to handle on a ladder and can be cut into shorter pieces for step flashing, apron flashing or small roof repairs. It is often chosen for domestic jobs because it combines ease of shaping with excellent resistance to rain and wind-driven water.
As of August 2026, PriceNailer data confirms that the cheapest price for Code 4 Lead Flashing 240mm x 3m is £48.96 from Roofing Superstore across 6 suppliers. Prices have decreased by 0.5% over the last 9 months.
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Frequently Asked Questions
What does Code 4 lead flashing mean and what thickness is it?
Code 4 lead flashing has a thickness of 1.8mm and weighs approximately 20.4kg per square metre. This medium-weight grade offers excellent durability while remaining flexible enough to shape by hand, making it ideal for most domestic roofing applications.
How much area does 240mm x 3m Code 4 lead flashing cover?
A single roll of 240mm x 3m Code 4 lead flashing covers 0.72 square metres. The 240mm width provides adequate coverage for standard cover flashings with proper overlap onto roofing materials and upstand into brickwork.
Can I cut Code 4 lead flashing to size for different applications?
Yes, Code 4 lead flashing can be easily cut with a sharp knife or lead knife to create shorter lengths for step flashing, apron flashing, or small repair jobs. The 3m length is designed to be manageable while allowing flexibility for various installations.
What tools do I need to install 240mm Code 4 lead flashing?
You'll need basic tools including a lead knife or sharp utility knife for cutting, a lead dresser or wooden block for shaping, and appropriate fixings like lead screws or clips. The Code 4 thickness is malleable enough to dress by hand for most applications.
Is 240mm wide lead flashing suitable for chimney work?
Yes, 240mm Code 4 lead flashing is commonly used for chimney flashings as it provides sufficient width for a good upstand against the chimney stack and adequate overlap onto the roof covering. It's ideal for front apron flashings and side cover flashings on standard domestic chimneys.