Why choose Code 6 300mm 3m Roofing Lead?

Code 6 300mm 3m Roofing Lead is a heavy-duty roll for flashings and compact weatherings where you want extra stiffness, durability and a tidy finish
without moving into very wide sheet territory. At approximately 2.65 mm thickness and around 30.0 kg/m², Code 6 holds a clean
line once dressed and performs well in exposed locations where lighter lead can distort, fatigue, or end up over-fixed in an attempt to keep it flat.

The 300 mm width is a practical “workhorse” size for abutment flashings, aprons and protective weatherings, especially where the detail is constrained by chase depth,
masonry geometry or adjacent roof coverings. The 3 m length is easy to handle on scaffolds and helps keep piece lengths sensible for movement control and controlled dressing.
For principle-led guidance on movement zones and restraint strategy, see
The Lead Lads and our standards explainer aligned to
BS 6915 — Proper Leadwork.
For real-world examples of finished leadwork detailing, visit
Neal Roofing — Leadwork.

Best-fit uses for Code 6 300mm 3m Roofing Lead

• Abutment flashings to brick/stone upstands where stiffness improves durability and presentation.
• Chimney aprons and compact weatherings that need to hold shape and shed water cleanly.
• Step/cover flashing zones where a narrow but robust sheet is preferred.
• Protective trims in higher exposure areas where light sheet can flutter or fatigue.
• Refurbishment upgrades replacing distorted or over-nailed lighter lead.

Planning & set-out

Before cutting Code 6 300mm 3m Roofing Lead, confirm lap requirements, chase depth (where relevant) and joint positions. Keep piece lengths sensible for movement control,
align joints with steps and drips, and avoid “dead pockets” that trap water and debris. A clean set-out makes it easier to dress the lead neatly and achieve a consistent finish.

Good practice: movement, restraint and finishing

Lead moves—so detailing must allow for it. Keep mechanical fixings out of movement zones and never bridge expansion features. For chase restraint, use
Hall Clips then point neatly with mortar or
Lead Mate Sealant depending on the specification. Where a slip layer is appropriate beneath wider weatherings,
use Building Paper Lead Underlay to reduce underside abrasion and help the sheet slide rather than buckle.
For a cleaner early-life finish on visible elevations, apply Lead Patination Oil.

Installation essentials

1. Substrate preparation: Ensure smooth bearing surfaces and remove sharp arrises that can puncture lead.
2. Cut and dress: Cut cleanly and dress with the right tools to form crisp arrises without over-stretching.
3. Fixings: Use Copper ARS Nails or
   Stainless Ringshank Nails where specified; avoid over-fixing.
4. Restraint: Use Hall Clips in chases and keep fixings out of movement zones to prevent fatigue and splitting.
5. Finish: Check drainage and seal chases neatly; protect adjacent finishes during dressing and pointing.

Choosing the right width

300 mm is a versatile flashing width. If you need more cover, move to 360–390 mm widths for deeper flashings, or 450–510 mm for compact weatherings.
For parapets and bays, consider 600 mm+. Matching width and code to function—plus thoughtful movement detailing and drainage—underpins long service life.

Further reading

For deeper guidance on compliant detailing, movement control and best practice, visit
theleadlads.co.uk and review site examples at
Neal Roofing — Leadwork.

At a glance — Code 6 300mm 3m Roofing Lead