Why choose Code 3 390mm 3m Roofing Lead?

Code 3 390mm 3m Roofing Lead gives extra cover for deeper flashings and compact aprons while keeping the agile handling
that makes Code 3 a site favourite. At ~1.32 mm thick it cuts easily, dresses cleanly into chases and forms crisp checks and returns.
Choose this width when 300 mm isn’t quite enough but you don’t need the full span of 450–600 mm. For refresher guides on layout,
movement and tooling, see the training content at
The Lead Lads.

Typical uses for Code 3 390mm 3m Roofing Lead

• Wide cover flashings to brick/stone abutments and parapet upstands.
• Compact apron pieces and back gutters (keep single-piece lengths sensible for movement).
• Weatherings around dormers, lanterns and rooflight kerbs needing extra lap/tolerance.
• Neat protective checks at openings and transitions on pitched roofs.
• Cutting multiple slate/tile soakers efficiently from a single wider roll.

Planning & set-out

Confirm exposure, chase depth and lap requirements before cutting. The 390 mm width of
Code 3 390mm 3m Roofing Lead offers generous cover on awkward junctions, but individual piece lengths should still be limited
to manage thermal movement and align joints with steps, drips and outlets. For real-world detailing and finished examples, review
Neal Roofing — Leadwork.

Good practice with Code 3 390mm 3m Roofing Lead

Use clips/straps and mechanical fixings sparingly and outside movement zones; don’t over-nail or bridge joints. Beneath wider weatherings,
include a smooth slip layer to enable free expansion/contraction and reduce underside abrasion.
Where the sheet starts acting as a covering (bay panels, parapet weatherings subject to load or foot traffic), step up to heavier gauges
such as Code 4 or Code 5 per specification. Finish visible work with
Patination Oil to reduce early staining and even the tone.

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 390mm 3m Roofing Lead with clean edges for consistent laps.
3. Fix with care: Choose copper or stainless fixings/clips; keep them out of movement zones and avoid over-nailing.
4. Finish the chase: Point with mortar or apply Lead Mate Sealant for a durable, water-shedding joint.
5. Protect new work: Apply patination oil on visible elevations for even early tone and presentation.

Selecting the right code & when to step up

Code 3 390mm 3m Roofing Lead excels on wide weatherings that demand easy dressing and neat presentation. If pieces will carry
load, see high exposure or form part of a covering (e.g., bays/parapets), specify a heavier code. Matching thickness to function, combined with
sensible piece lengths, clear drainage and correct restraint, underpins long service life. For principle-led guidance aligned to recognised practice,
browse our standards explainer:
The Lead Lads — BS 6915 overview.

Complete the system

Pair Code 3 390mm 3m Roofing Lead with
Hall Clips for quick chase restraint,
Copper ARS Nails 3.35×25 mm or
Stainless Ringshank 25 mm for mechanical fixing,
Building Paper Lead Underlay as a slip layer,
and Patination Oil 0.5L to protect fresh work.
For applied examples of quality leadwork in context, see
Neal Roofing — Leadwork.

Further reading

For extended guidance on abutments, aprons, back gutters, bay sizing and movement control, explore the training articles at
theleadlads.co.uk, plus our BS-aligned explainer:
BS 6915 — Proper Leadwork.
These resources complement your specification and help ensure Code 3 390mm 3m Roofing Lead performs exactly as intended.

At a glance — Code 3 390mm 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.