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ApexShieldRoofing Ltd
Chimney RepairsDemo Case Study

Period Chimney Stack Restoration & Code 4 Lead Flashing

LocationHale, Altrincham
Property TypeEdwardian Detached Residence
Project Duration4 Working Days
CompletedNovember 2025
Visual Inspection

Before & After Comparison

Slide back and forth to inspect the transformation of the roof covering.

Fully repointed brick chimney with fresh Code 4 lead flashing and rain cowls in Altrincham
Completed Work
Crumbling mortar and cracked cement flaunching on Edwardian chimney stack in Altrincham
Before Restoration
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The Problem

The homeowners noted peeling paint and damp plaster along the first-floor bedroom chimney breast. Previous contractors had attempted a quick patch with bitumen silicone mastic, which had failed and cracked under solar heating.

Our Technical Assessment

Our inspection revealed that the 110-year-old mortar joints had weathered away to a depth of 25mm in exposed upper courses. The cement flaunching surrounding the chimney pots had split into four pieces, allowing water to trickle directly into the unused flue. The original lead soakers were corroded and torn.

The Solution & Workmanship

We erected a tailored chimney access tower. All defective mortar was raked out and the brickwork was repointed using an appropriate hydraulic lime mortar mix to permit natural breathability. We cast a new reinforced sand-and-cement flaunching crown, re-bedded the terracotta pots, and fitted stainless steel bird/rain cowls. Finally, we dressed brand new Code 4 milled British Standard lead step flashings and front/back aprons chased 25mm into the brickwork.

The Result & Guarantee

The chimney stack was structurally consolidated and rendered entirely watertight. The dampness in the bedroom chimney breast fully dried out over the following three weeks, allowing redecoration without fear of recurring water staining.

Warranty: 15-Year Guarantee on Brickwork & Leadwork
On-Site Documentation

Project Gallery

Photographic records captured during progress and final sign-off.

Raking out eroded lime mortar joints
Deep 20mm mortar rake out prior to repointing
Completed Code 4 lead step flashings neatly chased into mortar joints
Code 4 lead step flashings with lead wedges and professional mastic sealant
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