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Town Hall Lead Refurbishment

Dukinfield Town Hall Slate Roof

KK-Roofing refurbishment and repairs to Dukinfield Town Hall slate roof.

The contract included replaing leadwork on the roof, abutments, tower(s) and reslating and stepped flashings to the bay windows.

Lead metreage statistics:

• 180m lead gullys
• 145m lead flashings and capping pieces
• 85m lead valleys
• 25m inverted fishtail soakers
• 85m soakers

Main Slate Roof

Overall, the large main areas of the Town Hall were deemed in good condition and the general slating was in good order

Bay Window Repairs

We carefully stripped back the existing roof slates and stacked them for reapplication. The timbers were in good order upon inspection.

Repairs required the releading of flashings on abutments in code 4

Each flashing was mechanically plugged twice and mechanically sealed using flexible lead seal to ensure long life and watertight fixing

Roof Gullys, Abutments, Soakers and Flashings

All of the roof lead needed rening to ensure it met Lead Development Agency (LDA) Regulations

Access to the gullys was gained at the bottom of the slated roof areas where the first 3 courses of slating were mechanically removed from eaves upwards

All the defective lead gully material was removed and disposed of. A report on existing timbers was provided to main contractor, and remedial work and repairs was carried out by them

All defective leadwork was then renewed according to LDA Regulations. Fully welded expansion joints were installed to allow thermal movement caused by solar radiation

The roof valleys were renewed in code 5 lead. Where dual roof pitches meet the lead valley rainwater run-off is channelled into the gutters.

We make the lead valleys on-site using lead sections no longer than 1.5 metres. This length allows for thermal expansion and contraction of the metal, preventing stress and loosening or splitting of the lead.

The lead sections were fixed using copper nails to prevent corrosion or chemical reaction. The first valley piece is fixed at the valley bottom and nailed at the top. Subsequent sections overlap the underlying by 150mm to prevent water ingress

Against all wall abutments all courses of slate were removed 3 courses in from the abutment to gain effective access to lead soakers. When replacing soakers they are cut to size and installed while the slates are reinstated.

The first 3 courses of slate material above gullys was relaid. Reclaimed Welsh slates were sourced to match existing to compensate for any breakages

All stepped and lead flashings were renewed in code 4 lead

Roof Spire and Tower

The spire with flag pole was reslated and lead flashings were repaired.

The roof tower on the rear roof section of the building was stripped of courses of slate and the defective lead paneling and soakers. New vertical wooden mop roll joints were installed and lead soakers and aprons were installed at the base of the tower as reslating progressed. New code 5 lead panels were cut to size, dressed to suit the mop roll joints, copper nailed at the top and clipped with Turn Coated Steel clips at the base to allow thermal movement

The client was delighted with the work.