Why choose the Premium Code 4 150mm 6m Roofing Lead?

The code 4 150mm x 6m roofing lead is designed for roofers who want maximum efficiency, premium performance and continuous lengths that reduce joints on site. This 6-metre roll has become a favourite among professional installers because it eliminates unnecessary overlaps, reduces installation time and provides an exceptionally clean finish across long runs of flashings, soakers, junctions and upstands.

Manufactured to BS EN 12588, every metre of code 4 150mm x 6m roofing lead delivers the consistent thickness, durability and longevity required for modern roofing and heritage work alike. Code 4 is the ideal gauge for a wide range of weathering details because it dresses accurately, resists fatigue and performs reliably under normal loading conditions without compromising workability.

This roll size is especially valuable on larger projects where multiple short lengths would slow progress. Instead of creating unnecessary laps, the code 4 150mm x 6m roofing lead gives installers the freedom to work efficiently across long wall lines, chimney junctions, eaves, dormers and perimeter flashings. For pricing and quantities, use our
Lead Flashing Calculator for a fast, trade-friendly workflow.

Typical uses for Code 4 150mm 6m Roofing Lead

• Continuous flashings where long, uninterrupted runs are required.
• Eaves and abutment flashings along full-length walls.
• Dormer base flashings and small-weathering details.
• Slate/tile soakers requiring a consistent 150mm width.
• Chimney junctions, back gutters and apron details.
• Perimeter upstands, tray flashings and linear weathering tasks.

Why the 6m roll is a superior option

Choosing a 6m length of code 4 150mm x 6m roofing lead significantly improves installation efficiency. Fewer joints means fewer potential weak points, reduced labour time and a more professional, continuous finish. Installers working on reroofing projects, developments, heritage work and maintenance schemes consistently prefer long rolls for their speed and reliability.

With fewer laps, water flows more efficiently across the detail, reducing the risk of capillary action. This is especially important on low-pitch roofs or exposed elevations where weathering performance is critical.

Good practice with Code 4 Lead

When using code 4 150mm x 6m roofing lead, always follow recognised detailing principles from the Lead Sheet Association. Although 150mm is a narrow width, correct allowances for movement are still essential on longer lengths. Ensure the substrate is smooth, supported and free from sharp edges. Avoid stretching the lead when dressing it into position.

For pointing, choose either mortar or a neutral-cure sealant such as
Lead Mate Sealant. Where appropriate, apply patination oil immediately after dressing to protect the lead from early staining and promote uniform weathering.

Installation essentials

1. Prepare the substrate: Ensure full support behind the sheet, especially on long runs.
2. Cut & shape: Trim the code 4 150mm x 6m roofing lead cleanly for crisp edges and consistent installation.
3. Fix with care: Use copper or stainless fixings from our
   Leadwork Fixings range, avoiding over-fixing.
4. Finish the chase: Seal using Lead Mate or mortar to protect the top edge.
5. Protect the finish: Apply patination oil to reduce carbonate marking.

Further reading

For technical guidance, explore:
The Lead Handbook,
theleadlads.co.uk,
and the practical resource pages at
Neal Roofing.

Complete the system

Pair code 4 150mm x 6m roofing lead with:
Hall Clips for chase restraint,
Building Paper Underlay,
Lead Mate Sealant,
Patination Oil,
and browse our full
Accessories range.

At a glance — Code 4 150mm 6m Roofing Lead

Figures are approximate. Always follow BS EN 12588 and recognised leadwork guidance.