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Council Flats - Tile Roofing

Tiled Roofs on Council Flats

K Kershaw Roofing is an approved roofing contractor for council repair work.

The roofing contract was to refurbish the roofs of 143 residential units - 93 houses and 50 flats.

The tile roofs on the flats and apartments were at the end of their dependable lives.

All the council owned properties on the housing estate needed preventive roof maintenance.

The multiple problems were mainly due to the age of the properties, they include:

• shaling of clay tiles - causing tiles to flake and disintegrate
• dislodged tiles on the eaves
• tiles with broken corners
• discoloured tiles and tile roofs which are unsightly
• rotted and hardened bituminous felts at the eves
• chimney stacks that required renewal of lead flashings and aprons
• loose and poorly fixed ridge tiles
• evidence of multiple minor repairs

KK-Roofing are expert in roof tiling and we undertook the reroofing of the flats and houses using only industry certificated roofers with the qualifications and experience to undertake work of the highest quality and complete it within the time frame available.

The blocks of flats were reroofed in Redland Duo Plain tiles - Old English Dark Red. Each tile has the appearance of two tiles. This solution is a cheap and effective solution because fewer and larger tiles reduce fitting times.

The tiered terrace houses had the original Redland Rosemary clay tiles replaced with identical specification to preserve the character of the buildings.

Retiling and leadwork

Retiling the roofs required:

• sufficient scaffolding erected for roof access and safety
• stripping out of the existing gutters and down pipes, roof tiles, ridge tiles, wooden battens, felts and lead flashings
• Mechanically fixing the replacement breathable membranes to the roof structure with wooden battens
• from the eve-line tiles towards the ridge the tiles were hung in regular overlapping rows (courses) along the framework of a roof
• roof extrusions such as vents were provided with waterproof roofing materials
• stepped flashings at abutments were installed
• chimney stacks were 'ground-out' and then repointed with 3:1 sand/cement ratio and had replacement flashings and aprons installed. Lead aprons fit around the base of the exposed chimney stack and extends down the roof and are secured underneath tiles either side of the chimney
• Renewal of the guttering and down pipes
• Replacement ridge tiles were wet fixed, i.e. fully bedded in cement along the roof ridges to ensure they matched the requirements of the environmental conditions and for longevity. Sides and collars were skimmed in cement to ensure a watertight hold
• The abutment where the dual roofs of adjacent blocks of flats join. At the join there is a lead valley and stepped lead flashings. Where run-off is channeled onto the roof tiles, protective lead soakers have been installed which intersect with the stepped flashings installed in the wall. This prevents water flowing onto brickwork.
• lead valleys are installed using lead sections no longer than 1.5 metres to allow thermal movement within the metal expanding and contracting which would cause the lead to loosen or split. Copper nails avoid corrosion and chemical reaction and each section overlaps the underlying section by 150mm to prevent water ingress.

The reroof contract was completed to schedule, at the agreed quoted price and there was a minimum or disruption to the tenants.

Housing Associations

KK-Roofing company also undertakes work for Housing Associations such as:

• Northern Counties Housing Association
• First Choice Homes in Oldham
• Northwards Housing in Manchester