Why choose code 5 180mm 6m roofing lead?

The code 5 180mm 6m roofing lead roll is a durable, heavy-gauge sheet designed for narrow to mid-width flashings, chimney details, deep soakers and exposed junctions where enhanced strength and fatigue resistance are essential. At 180mm wide, this roll offers an excellent balance between flexibility, coverage and long-term durability on demanding roofing applications.

Manufactured to BS EN 12588, this sheet offers consistent thickness (approx. 2.24mm), excellent malleability and high structural reliability. Roofers choose code 5 180mm 6m roofing lead for projects where Code 3 or Code 4 may fall short—particularly on chimneys, steep abutments and high-wind-facing elevations.

The 6m roll length reduces the number of joints across runs of stepped flashings, aprons and soakers, improving waterproofing and installation efficiency.

For coverage, weight and bay sizing, use our
Lead Flashing & Lead Roll Calculator.

Typical uses for code 5 180mm 6m roofing lead

Common applications include:

• Chimney stepped flashings and apron flashings.
• Deep soakers to slate or tile roofs in exposed positions.
• Cover flashings to small roof junctions and wall abutments.
• Weatherings on windward gables and vulnerable elevations.
• Heritage and conservation work requiring Code 5 gauge.
• Upgrading or replacing underspecified lightweight flashings.

Why Code 5 excels on exposed flashings

Narrow to medium-width flashings experience concentrated stress from thermal movement and wind uplift.
Code 5 180mm 6m roofing lead delivers the rigidity and fatigue resistance needed to prevent splitting or deformation over time.

• Stronger and more durable than Code 3 or 4.
• Excellent shaping while retaining structural performance.
• Ideal for chimneys, abutments and heritage roof detailing.
• Proven longevity on premium domestic and conservation roofs.

Installation guidance

Always install code 5 180mm 6m roofing lead to BS EN 12588 workmanship standards and LSTA/LSA detailing. Carry out work in accordance with BS6915 and engage in best practice to maintain longevity and aesthetics. Correct chase preparation, fixing type and allowance for expansion are essential for long-term weatherproofing.Use appropriate lead sealant for chases to cope better with thermal movement versus mortar pointing methods.

After installation, apply patination oil to all exposed lead surfaces to prevent early staining and support even ageing.

For chase sealing and joints, use mortar or
Lead Mate Sealant.

Installation essentials

1. Prepare the chase: Clean, uniform and suitable depth for the detail.
2. Measure & cut: Keep individual lengths within Code 5 movement allowances.
3. Fix securely: Use copper or stainless nails from
   Leadwork Fixings.
4. Seal joints: Finish with Lead Mate or mortar.
5. Protect: Apply patination oil after installation.

Further reading & trusted resources

For in-depth technical support, see
The Lead Handbook,
roofing insights at
The Lead Lads,
and installation expertise from
Neal Roofing.

Recommended accessories

Pair code 5 180mm 6m roofing lead with:
Lead Underlay,
Patination Oil,
Lead Mate Sealant,
and premium fixings from
Leadwork Fixings.

At a glance — code 5 180mm 6m roofing lead

All figures approximate. Install following BS EN 12588 and LSTA/LSA guidelines.