Roof repairs at McMillan Street, London

The water-ingress problem

Water entering a flat’s kitchen ceiling and light fitting prompted an investigation of the tiled roof and its junctions around a rooflight, parapet wall and chimney.

Opening up and carrying out the repair

We removed tiles, battens and damaged roofing felt from the affected area. This exposed the underlying construction so the repair could address the roofing layers beneath the tiles.

Replacement layers and leadwork

Our work included fitting new breathable membrane and battens, reinstating the tiles around the existing rooflight, redressing leadwork at the parapet and chimney, and fitting and sealing the chimney back gutter.

The completed work

The repairs were completed on 29 October 2026. Photographs document the original condition, opening-up, replacement layers and reinstated roof. Performance following subsequent rainfall remains to be recorded.

Photographic record

**Before** Existing rooflight, tiled slope and chimney junction before opening-up.

**Opening-up** Roof tiles removed to expose the existing felt and battens below the rooflight.

**During** Replacement breathable roofing membrane fitted below the rooflight.

**During** New membrane and battens before the roof tiles were reinstated.

**Completed** Roof tiles reinstated around the existing rooflight.

**Completed detail** Completed leadwork at the chimney and adjoining roof junction.

Roofing, guttering and leadwork

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