Why choose code 5 150mm 6m roofing lead?

The code 5 150mm 6m roofing lead roll is a robust and durable heavy-gauge sheet designed for narrow flashings, chimney detailing, deep soakers and exposed junctions where enhanced strength is essential. At 150mm wide, this size is ideal for stepped flashings, apron flashings and protection details requiring a secure and long-lasting weathering solution.

Manufactured to BS EN 12588, this rolled sheet ensures consistent thickness (approx. 2.24mm) and outstanding long-term performance. The heavier gauge of code 5 150mm 6m roofing lead makes it especially suitable for exposed locations, high-wind elevations and detailing where Code 3 or Code 4 may be insufficient.

The 6m roll length minimises the number of joints during installation, improving waterproofing and reducing installation time on stepped flashings, chimney skirts and abutment runs.

For accurate material calculations and coverage estimates, use our
Lead Flashing & Lead Roll Calculator.

Typical uses for code 5 150mm 6m roofing lead

This versatile size is frequently selected for:

• Stepped flashings around chimneys and abutments.
• Narrow apron flashings on dormers or lean-to roofs.
• Deep soakers beneath slate or tile roof coverings.
• Weatherings on vulnerable junctions and windward elevations.
• Heritage and conservation detailing requiring heavy-gauge sheet.
• Replacing failed lightweight flashings with a stronger specification.

Why Code 5 is ideal for heavy-duty narrow flashings

Narrow flashings often endure significant thermal movement and concentrated wind uplift.
Code 5 150mm 6m roofing lead provides the extra stability, thickness and fatigue resistance needed to prevent splitting or deformation over time.

• Greater tear resistance than Code 3 or Code 4.
• Excellent shaping while retaining structural integrity.
• Ideal for exposed chimneys and junctions on older buildings.
• Long-term durability proven on heritage and premium roofs.

Installation guidance

Install code 5 150mm 6m roofing lead in accordance with BS EN 12588 and LSTA/LSA recommendations. Correct chase depth, fixing placement and allowance for expansion are essential to achieve a watertight and long-lasting finish.

Once installed, treat exposed surfaces with patination oil to reduce early oxidation and maintain an even appearance during weathering.

For sealing chases and perimeters, use mortar or
Lead Mate Sealant.

Installation essentials

1. Prepare the chase: Clean, uniform and correct depth for secure bedding.
2. Cut and set out: Keep lengths within movement limits for Code 5.
3. Fix correctly: Use copper or stainless nails from our
   Leadwork Fixings range.
4. Seal joints: Finish with mortar or Lead Mate for a durable seal.
5. Protect: Apply patination oil immediately after installation.

Further reading & trusted resources

For specialist guidance, see
The Lead Handbook,
authoritative resources at
The Lead Lads,
and professional installation expertise from
Neal Roofing.

Recommended accessories

Pair code 5 150mm 6m roofing lead with:
Lead Underlay,
Patination Oil,
Lead Mate Sealant,
and premium fasteners from our
Leadwork Fixings collection.

At a glance — code 5 150mm 6m roofing lead

All figures approximate. Install according to BS EN 12588 and LSTA/LSA guidance.