Code 3 Lead Flashing 150mm x 3m
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Product Details
Code 3 lead flashing in a 150mm x 3m roll is a thin, flexible strip of lead used to create a waterproof seal where a roof meets a wall, chimney, or similar junction. Its malleable nature makes it easy to cut and dress around tiles, brickwork and awkward shapes, ideal for smaller abutments, soakers and step flashings. The 150mm width suits typical upstand heights while still allowing a good overlap onto the roof surface. Being Code 3, it is lighter and easier to handle than thicker lead, but is best used where it will not be subject to heavy foot traffic or very wide spans. This size roll is convenient for DIYers, giving enough length for a short run of flashing without excessive joints.
As of August 2026, PriceNailer data confirms that the cheapest price for Code 3 Lead Flashing 150mm x 3m is £22.85 from Roofing Superstore across 4 suppliers. Prices have increased by 0.7% over the last 9 months.
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Frequently Asked Questions
What is Code 3 lead flashing suitable for?
Code 3 lead flashing is ideal for smaller abutments, soakers, and step flashings where the lead won't be subject to heavy foot traffic. Its lighter weight makes it perfect for typical residential roofing applications like sealing roof-to-wall junctions and around chimneys.
How much overlap should I allow with 150mm lead flashing?
With 150mm width flashing, allow at least 75mm upstand and 75mm overlap onto the roof surface as a minimum. For better weatherproofing, aim for 100mm upstand with 50mm roof overlap, ensuring the flashing extends well under roof tiles or slates.
Can I cut Code 3 lead flashing with standard tools?
Yes, Code 3 lead's thin and malleable nature makes it easy to cut with a sharp knife or tin snips. You can also dress it around tiles and awkward shapes by hand, making it very DIY-friendly for most roofing applications.
How many metres of flashing do I need for a typical roof repair?
This depends on your specific application, but a 3m roll typically covers a short run of abutment flashing or several soaker repairs. Measure your roof perimeter and add 10% for overlaps and wastage to determine total requirements.
What's the difference between Code 3 and Code 4 lead flashing?
Code 3 is thinner and lighter, making it easier to handle and ideal for smaller applications. Code 4 is thicker and more durable, better suited for wider spans and areas with foot traffic, but requires more skill to install.