Leadworks Installation
Correctly installed lead outlasts almost anything else on a roof. Sherford Roofing fits Code 4 and Code 5 lead to BS 6915 across Plymouth and Devon.
Lead is still the most durable material for sealing the junctions on a roof, chimney flashings, valleys, aprons, stepped flashings and dormer cheeks. Fitted correctly, to the right code and with proper allowance for thermal movement, it can last well beyond 100 years. Fitted badly, the wrong thickness, poor joint spacing, missing soakers, it can split within five years.
Sherford Roofing installs lead flashing and leadwork across Plymouth and Devon to BS 6915, using Code 4 lead (~1.8mm) for standard chimney flashings and general abutments, and Code 5 (~2.24mm) for more exposed locations, larger valleys and deeper formed details.
Our Process
Specify the Right Code
Code 4 for most chimney flashings and abutments, Code 5 for exposed locations, valleys and larger formed details, specified to suit the actual junction, not a default.
Correct Bay Sizing
Lead is cut and laid in bays sized to allow for thermal expansion, the single biggest cause of premature splits when done wrong.
Dress & Fix
Lead is dressed into position with proper laps, wedged into the chase, and fixed with clips rather than nailed through the face.
Point & Seal
The chase is pointed to lock the lead in place and shed water cleanly, completing a watertight, movement-tolerant junction.
Lead sheet is manufactured to BS EN 12588 and installed in accordance with BS 6915:2001+A1:2014, following Lead Sheet Association guidance on movement joints, fixings and detailing, the standard that correctly-installed lead can outlast the roof around it depends on following.
Leadworks Installation FAQs
Code 5 is thicker (around 2.24mm vs 1.8mm) and used where more rigidity or durability is needed, larger details, more exposed locations, and valleys, while Code 4 is the standard specification for most chimney flashings.
Correctly specified and installed to BS 6915, decades, often over 100 years, which is why proper installation matters far more than the cost of the lead itself.
Yes. Lead is the traditional material for these junctions and is often specifically required in conservation areas and on listed buildings, Andy flags any relevant considerations at survey stage.
Need Leadworks Installation?
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Or call our office: 01752 741888