THE LEAD LADS® / PROJECT ARCHIVE
Complete renewal of a prominent lead-covered bay roof at Meadowhead in Sheffield, including removal of the existing covering, renewal of the supporting deck and installation of a new Code 5 rolled lead weathering system.
MEADOWHEAD · SHEFFIELD · CODE 5 LEAD · BAY ROOF
Explore the Project01 — THE PROJECT
This project involved the complete renewal of the lead covering to a projecting bay window at Meadowhead in Sheffield.
Although modest in area, a bay roof concentrates several important roofing details into a small space. The supporting deck, perimeter junctions, sheet arrangement, leading edge and drainage path all need to work together.
The existing covering was removed, the supporting construction prepared and a new Code 5 rolled lead covering installed as a complete weathering system rather than a local patch repair.
LEADWORK SHEFFIELD →
LEAD BAYS GUIDE →
LEAD BAY ROOF GUIDE →
LOCATION
PROGRAMME
LEAD CODE
PROJECT TYPE
02 — THE BAY
A lead bay roof may contain only a relatively small quantity of material, but its size makes accurate detailing particularly important.
The roof sits immediately above the window construction and forms part of the principal elevation. Water therefore needs a clear route across the lead and beyond the front edge without being allowed to track into the perimeter junctions below.
The finished appearance also matters. Sheet divisions, perimeter lines, corners and drips remain highly visible from ground level.
03 — TECHNICAL APPROACH
The quality of a lead bay roof depends on much more than the visible sheet.
Once the existing covering was removed, the supporting structure could be assessed and prepared to provide a stable, continuous background for the new work.
The lead was then set out in sections appropriate to the geometry of the bay, with the fixing and edge arrangements designed to restrain the covering while still allowing the sheet to respond to temperature change.
Code 5 lead was used on this project. The correct lead code on another bay should be considered alongside the actual sheet dimensions, geometry, exposure and joint arrangement.
A prominent architectural detail on the principal elevation of the property.
Rolled lead sheet formed to provide a clean and controlled weathering surface.
Clean edges, formed corners and a defined front drip complete the new bay covering.
04 — MOVEMENT
Lead expands and contracts as its temperature changes. The fact that a bay roof is small does not remove that behaviour.
The covering therefore needs sensible sheet dimensions and a fixing strategy that holds the lead in position without unnecessarily restricting movement across the field of the sheet.
Where a bay is more complex, rolls, welts or separate pieces can be used to break the covering into manageable sections.
05 — WATER
A successful bay roof should make the direction of travel for rainwater straightforward.
The deck establishes the roof geometry beneath the lead. The sheet covering follows that geometry and the leading-edge detail then allows water to discharge clear of the window construction below.
Abutments, corners and edges all form part of that drainage path.
This is why defects in a bay roof often need to be considered as a complete construction rather than as isolated imperfections in the visible lead.
06 — SIGNATURE DETAIL
The front edge is one of the most visually important details on a bay roof and one of its principal weathering points.
The lead needs to terminate cleanly while directing water away from the structure below.
A properly formed drip establishes a crisp architectural line but also performs a practical function by encouraging water to separate from the underside of the covering rather than track back towards the window construction.
On a highly visible bay, this is where technical detailing and finished appearance become the same thing.
07 — PREPARATION + SUPPORT
A flat, stable and correctly formed background allows the leadwork above to follow the intended geometry without inheriting avoidable defects from the substrate.
08 — LEADWORK INSTALLATION
09 — MATERIALS
CODE 5 LEAD →
18MM PLYWOOD →
BUILDING PAPER / UNDERLAY →
COPPER FIXING STRIP →
LEADWORK FIXINGS →
PATINATION OIL →
10 — THE CRAFT
A bay roof is a useful example of why the size of a project is not necessarily a measure of its technical complexity.
Very little material can still contain a substantial amount of skilled leadwork.
11 — PROJECT RECORD
The finished photography records the new Code 5 leadwork as part of the front elevation rather than simply as a roofing material.
The clean edges, controlled sheet geometry and relationship with the window below demonstrate the value of treating the bay as a complete architectural detail.
12 — LEAD BAY ROOFS
A good lead bay roof is the product of several coordinated decisions rather than simply the choice of lead sheet.
The substrate determines the geometry. The sheet layout determines how the lead can move. The perimeter details manage interfaces, while the falls and leading edge establish the water path.
Those elements should be considered together before materials are cut or fixed.
Lead Bays Technical Guide →
Lead Bay Roof: Codes, Substrates + Detailing →
Lead Bay Window Roof Guide →
13 — SHEFFIELD LEADWORK
This Meadowhead project forms part of The Lead Lads® growing record of specialist leadwork across Yorkshire.
Bay roofs are particularly useful local case studies because they connect a recognisable residential problem directly with the technical principles and materials required to solve it.
Leadwork Sheffield →
Leadwork Services →
Request a Lead Roofing Quote →
14 — WHAT THIS PROJECT SHOWS
The Meadowhead project demonstrates why complete replacement can sometimes be more meaningful than concentrating solely on the visible sheet.
Removing the old covering created access to the supporting construction and allowed the new leadwork to be designed around a prepared deck rather than inherited defects.
The finished system is therefore the result of several layers working together: substrate, separation layer, Code 5 sheet, restraint, perimeter details and drainage.
PROPERTY OWNER TAKEAWAYS
15 — FREQUENTLY ASKED
Code 5 rolled lead sheet was used on this project. The correct code for another bay depends on its geometry, individual sheet dimensions, exposure and detailing.
Fully supported leadwork relies on a stable and correctly formed background. Irregularity or movement in the supporting construction can affect the covering above.
Lead changes dimension as its temperature changes. The sheet arrangement therefore needs to keep individual pieces manageable and avoid unnecessary restraint.
No. Isolated defects may sometimes be repairable. Broader renewal becomes more relevant where the covering, interfaces or supporting construction require more extensive intervention.
The leading-edge detail helps water discharge clear of the structure below rather than tracking back beneath the edge of the covering.
The Lead Lads® publishes both a Lead Bays technical guide and a detailed Lead Bay Roof Guide covering material selection, substrates, sheet layout and movement.
16 — MATERIALS + RESOURCES
Lead Roofing Project Archive →
Lead Bays Guide →
Leadwork Standards →
Lead Bay Roof Guide →
Code 5 Rolled Lead →
18mm Plywood →
Building Paper / Lead Underlay →
Copper Fixing Strip →
Leadwork Fixings →
Patination Oil →
Lead Sizing + Ordering Chart →
THE LEAD LADS® / PROJECT ARCHIVE
The Meadowhead bay roof forms part of The Lead Lads® archive documenting lead roofs, bays, gutters, dormers, flashings, canopies and specialist architectural details across Yorkshire and beyond.
Its scale is modest, but the project demonstrates the same principles found throughout good sheet-lead work: sound support, sensible sheet arrangement, controlled movement, compatible fixing and an obvious route for water.
