Why choose Code 4 180mm 3m Roofing Lead?

The code 4 180mm x 3m roofing lead is the ideal choice when you need a slightly wider flashing or weathering detail with the added strength of Code 4 gauge. At 180mm wide, this roll provides extra coverage over 150mm sizes, making it perfect for deeper chases, wider abutments, chimney junctions and larger soakers where resilience and longevity are essential. Because code 4 180mm x 3m roofing lead is manufactured to BS EN 12588, you get consistent thickness, predictable performance and excellent long-term durability in every roll.

This width is especially popular among roofers working on slate and tile roofs, offering greater flexibility in complex junctions while still maintaining the easy handling and precise detailing associated with Code 4. For roofers ordering on-site, our streamlined
Lead Flashing Calculator makes selecting the correct width and code fast and accurate.

Typical uses for Code 4 180mm 3m Roofing Lead

• Deeper stepped or cover flashings to brick and stone abutments.
• Larger slate and tile soakers where additional lap is required.
• Small chimney aprons, back gutters and weathering details.
• Dormer cheeks, window heads and varied roof-junction detailing.
• Repairs or reinstatement work in traditional and heritage environments.

Good practice with Code 4 180mm 3m Roofing Lead

Because code 4 180mm x 3m roofing lead provides an enhanced width, it is well suited to areas where slightly more cover is needed but full-width sheets would be unnecessary. Keep piece lengths sensible to control thermal movement and avoid fatigue, especially on south-facing or exposed elevations. Always dress the lead neatly and use the correct pointing materials to secure the chase. On more demanding installations, consider pairing with suitable underlay options from our
Lead Underlay category.

Installation essentials

1. Prepare the substrate: Ensure a smooth, well-supported surface free from sharp edges that could damage the lead.
2. Cut & shape: Form the code 4 180mm x 3m roofing lead accurately, maintaining clean edges for tight laps and professional detailing.
3. Fix appropriately: Use copper or stainless fixings from our
   Leadwork Fixings section, and avoid over-nailing.
4. Seal & point: Finish the chase neatly using high-quality pointing products such as
   Lead Mate Sealant.
5. Protect the surface: Apply patination oil to reduce staining and help the lead weather evenly.

Standards & further reading

For full detailing guidance and best-practice standards, explore our technical hub:
The Lead Handbook.
You can also review wider leadwork information at
Neal Roofing — Leadwork Services
and browse additional resources at
theleadlads.co.uk.

Complete the system

Match code 4 180mm x 3m roofing lead with:
Hall Clips,
Lead Mate Sealant,
Building Paper Underlay,
and Lead Patination Oil.
Additional accessories and fixings can be found in our
Accessories and
Leadwork Fixings collections.

At a glance — Code 4 180mm 3m Roofing Lead

All figures are approximate. Always follow BS EN 12588 and project-specific detailing requirements for best long-term performance.