Why choose Code 6 850mm 3m Roofing Lead?

Code 6 850mm 3m Roofing Lead is a wide, heavy-duty roll chosen for high-performance weatherings where you need generous cover and a crisp,
long-lasting finish. With an approximate thickness of 2.65 mm and a mass of around 30.0 kg/m², Code 6 is
designed to perform as a covering—ideal for parapets, copings and wide bay roof panels where a lighter grade can feel under-spec.

The 850 mm width gives substantial coverage for wider parapets and bay layouts without stitching multiple narrow sheets together,
while the 3 m length keeps handling more controlled on scaffolds and tight access zones. This size is a strong choice when 760 mm is close,
but you want extra allowance for drips, turns and laps, or when you’re forming wider weatherings and want fewer seams across the detail.

For principle-led guidance on bay sizing, 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 850mm 3m Roofing Lead

• Parapet/coping weatherings and wide cappings with deep laps and crisp drips.
• Wide bay roof panels with sensible bay sizes, drips/rolls and a slip layer beneath.
• Wide upstands and junctions where extra cover reduces joints and improves presentation.
• Chimney aprons & back gutters where depth and stiffness improve longevity.
• Refurbishment upgrades where lighter lead has fatigued, buckled, or been over-fixed.

Planning & set-out

Before cutting Code 6 850mm 3m Roofing Lead, confirm lap requirements, joint positions and where drips/rolls will fall. Keep piece lengths sensible for
movement control and avoid “dead pockets” that trap water and debris. The 3 m format makes it easier to control panel lengths and detailing in tight access zones.

Good practice: movement, slip layers and restraint

Lead moves—so detailing must allow for it. Keep mechanical fixings out of movement zones and never bridge expansion features. Under bays and broad weatherings,
use a smooth Building Paper Lead Underlay (slip layer) to reduce underside abrasion and help the sheet slide rather than buckle.
Where perimeter edges are exposed to wind uplift, use a
Stainless Steel Fixing Strip and compatible clips to restrain the edge while allowing controlled movement.

For chase flashings associated with the detail, use Hall Clips for chase restraint, then point neatly with mortar or
Lead Mate Sealant depending on the specification. For a cleaner early-life finish on visible elevations,
apply Lead Patination Oil.

Installation essentials

1. Substrate preparation: Ensure smooth, continuous bearing and remove sharp arrises that can puncture lead.
2. Cut and dress: Cut cleanly and dress with the right tools to form crisp drips, turns and welts without over-stretching.
3. Fixings: Use Copper ARS Nails or
   Stainless Ringshank Nails where specified; avoid over-fixing.
4. Restraint strategy: Combine perimeter restraint (where required) with movement-friendly detailing and keep fixings out of movement zones.
5. Finish: Check drainage, keep outlets clear, and protect adjacent finishes during dressing and welding/burning (if applicable).

Choosing the right width

850 mm offers substantial cover for wide parapets and bay formation without joining multiple narrower sheets. If geometry or handling is tight, 760–800 mm may be a better fit.
If you need maximum cover, consider 914 mm; if the detail is a narrower flashing rather than a covering, step down to 390–600 mm widths.
Matching width and code to function—plus thoughtful bay sizing, 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 850mm 3m Roofing Lead