Code 5 Lead Flashing

Code 5 roofing lead is widely regarded as the most versatile grade of rolled lead sheet. At around 2.24 mm thick and produced to BS EN 12588, it offers the extra strength needed for higher exposure areas, longer bays and gutter linings, while still being easy to boss, weld and form to complex roof details.

The Reclaimed Company® supplies Code 5 rolls with pricing set per kg and checked regularly against the LME. Standard 3 m and 6 m rolls are shown within this category, and custom cut lengths can be arranged for larger orders. From here you can source bulk Code 5 rolls, then use The Lead Lads® and GNR Roofing for lead flashing planning, cut-to-size options, fixings and specialist installation services.

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Code 5 lead is suitable for stepped and cover flashings, gutters, valleys, aprons, back gutters and small flat roof details. For very wide bays or extreme exposure, step up to Code 6 in line with BS 6915 and Lead Lads® technical guidance.

Roofing Lead Code 5 - 760mm

Code 5

Roofing Lead Code 5 – 760mm

Price range: £147.90 through £295.80 + Vat
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Where Code 5 Lead Excels

Code 5 roofing lead is often chosen as the “go-to” grade where roofs are more exposed or where longer runs and wider gutters are required. Its additional thickness over Code 4 provides greater resistance to movement and weathering, while still allowing the sheet to be dressed cleanly into chases, valleys and gutter linings.

Typical Code 5 applications include:

  • Stepped and cover flashings to chimneys and abutments
  • Aprons and back gutters around chimney stacks
  • Valleys on pitched roofs, including moderate to high exposure
  • Gutter linings, parapet gutters and narrow box gutters
  • Small flat roof bays and detail work on dormers
  • Cladding panels where a more robust gauge of lead is desirable

For very wide gutters, large flat bays or extreme coastal exposure, designers will often move from Code 5 to Code 6 or Code 7. Detailing should always follow BS 6915 and LSTA guidance to control bay sizing, fixings and thermal movement.

Technical Details – Code 5 Roofing Lead

All Code 5 lead supplied by The Reclaimed Company® is rolled to the BS EN 12588 standard. This ensures consistent thickness, tight tolerances and a high level of purity in line with best practice for roofing and cladding applications.

Rolled Lead Sheet Weight Chart – Codes 3–8
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  • Nominal thickness: approx. 2.24 mm
  • Weight: approx. 25.40 kg/m²
  • Standard: BS EN 12588 rolled lead sheet (tolerance ±5%)
  • Typical use class: flashings, valleys, gutter linings and small flat bays

Code-to-code performance example:

  • Compared with Code 4, Code 5 offers a significant increase in thickness and weight, improving durability in exposed sites.
  • For the heaviest-duty gutters and large flat bays, Code 6 or above is often specified to further enhance service life.

The chart (right) illustrates the relative weights of Codes 3–8. Clicking it will take you to the Lead Lads® online flashing selector, where you can specify code, width and length for cut-to-size lead flashing to complement bulk Code 5 rolls.