How Long Does Lead Flashing Last?

Lead flashing can last for over 100 years if well-maintained. The material’s resistance to corrosion, flexibility, and the protective patina it develops make it a long-lasting solution for waterproofing in both residential and commercial construction.

Why Should Mortar Joints be Raked Out When Installing Lead Flashings?

Mortar joints should be raked out to a depth of at least 25mm to allow the lead flashing to be securely inserted and wedged in place. This helps minimise the risk of water penetration and ensures a solid connection between the flashing and the wall or roof structure.

How Much Overlap Is Needed When Joining Lengths of Lead Flashing?

When joining multiple lengths of lead flashing, the overlap should be at least 100mm. This ensures a continuous waterproof seal and helps prevent water from bypassing the flashing.

Can You Integrate Lead Flashings With Roofing Underlay?

Yes, lead flashings are designed to work seamlessly with roofing underlay. Typically, the underlay is folded up a minimum of 100mm behind the flashing at abutments, creating a robust barrier that prevents water from infiltrating the roof space, even during heavy rain or strong winds.

Can You Connect Lead Flashing To A Cavity Tray?

You can. When flashing intersects with a cavity tray, the mortar should be raked out to a depth of 25 mm below the cavity tray. This allows the flashing to be properly tucked in, preventing water from bypassing the flashing and entering the wall cavity.

Is Professional Installation Recommended For Lead Flashings?

Yes, it is highly recommended to have lead flashings installed by professionals with experience in working with lead materials. Correct installation is critical to ensure that the flashing is correctly shaped, fitted, and integrated with other building components for maximum effectiveness.

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Lead Flashing

32kg Code 3 Roll of Milled Lead Flashing 360mm x 6m

40kg Code 3 Roll of Milled Lead Flashing 450mm x 6m

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