Why choose Code 3 300mm 3m Roofing Lead?

Code 3 300mm 3m Roofing Lead gives you extra coverage for deeper flashings and small apron pieces while
retaining the light, highly workable characteristics of Code 3. The 300 mm width is ideal where 150–240 mm
doesn’t quite reach—think wider chimney aprons, back gutters (within sensible single-piece lengths), and generous cover
flashings at abutments and dormers. It’s a dependable choice when the sheet acts primarily as a weathering rather than a
loaded deck.

Typical uses for Code 3 300mm 3m Roofing Lead

• Wider stepped/cover flashings to brick or stone abutments.
• Chimney aprons and back gutters (keep single lengths sensible for movement).
• Generous cover pieces around dormers, skylights and parapet upstands.
• Protective weatherings and checks where extra lap is required.
• Refurbishment details where substrate irregularities need more tolerance.

Good practice with Code 3 300mm 3m Roofing Lead

Keep piece lengths within sensible limits and allow for thermal movement. Dress neatly into chases and complete with suitable
pointing (mortar or neutral-cure sealant). Use clips/straps and mechanical fixings sparingly and outside movement zones.
For bay roofs, parapets or areas subject to load/foot traffic, step up to heavier gauges (e.g., Code 4/5) as the
specification requires.

Installation essentials

1. Prepare the substrate: Provide a smooth bearing; remove sharp edges. Use a slip layer beneath wider weatherings.
2. Set out & cut: Measure accurately; cut Code 3 300mm 3m Roofing Lead with clean edges for tight laps and crisp lines.
3. Fix with care: Choose copper or stainless fixings/clips; avoid over-nailing and never bridge movement joints.
4. Finish the chase: Point or seal for a durable, water-shedding joint.
5. Protect new work: Consider patination oil to reduce early carbonate staining and even out the tone.

Standards & further reading

For workmanship principles that support durable leadwork, review our explainer aligned to recognised guidance:
The Lead Lads — BS 6915 overview,
plus the partner summary at
Neal Roofing — BS 6915 Leadwork.
For applied service context, see
Neal Roofing’s leadwork page,
and explore our hub at theleadlads.co.uk.

Complete the system

Pair Code 3 300mm 3m Roofing Lead with:
Hall Clips for quick chase restraint,
Lead Mate Sealant for neat pointing,
Building Paper Lead Underlay beneath wider weatherings,
and Lead Patination Oil 0.5L to protect fresh work.
For mechanical fixings, choose Copper Nails 3.35×25 mm
or Stainless Ringshank 25 mm.

At a glance — Code 3 300mm 3m Roofing Lead

Figures are indicative; always follow your project specification. Use heavier codes where pieces act as coverings or are subject to load/traffic.