Diagnosing Chimney Leaks, Damp Breasts & Stack Sway
Because chimneys protrude high above the roofline, they take the full brunt of Northwest Atlantic storms. Chimney problems typically manifest in three ways: brown water stains on upstairs bedroom ceilings, damp patches appearing on plaster chimney breasts, or loose masonry that presents a serious structural hazard.
Elevate Roofing & Building provides end-to-end chimney maintenance. We identify whether water is entering via cracked cement flaunching at the crown, porous brickwork, degraded mortar joints, or failed lead flashings. We re-point with waterproof hydraulic mortar, pour reinforced weather-sloped crowns, and install certified Code 4 lead step flashings with back-gutters.
Our Chimney Repair Services
Raking out degraded lime/cement mortar back 20mm and repointing with waterproof polymer-fortified mortar.
Re-pouring the top concrete flaunching with steep falls to shed rainwater away from flue liners and brickwork.
Milled lead aprons, step flashings, and back-gutters cut and dressed into mortar bed joints to seal the roof junction.
Securing loose clay flue pots and installing anti-downdraught stainless cowls with wire mesh to keep birds out.
Breathable siloxane water-repellent sealants sprayed over porous old bricks to stop driving rain soak without trapping internal vapour.
Safe deconstruction of redundant, unstable chimneys below roof level and seamlessly closing the roof with matching slates.
Our Chimney Restoration Process
Safe Scaffolding / Ridge Ladder Access
We establish safe access around the stack and perform a 360-degree close-up inspection of flaunching, brickwork, and flashings.
Old Mortar Raking & Lead Removal
Loose flaunching and rotten mortar joints are raked out, defective lead is removed, and all loose debris is vacuumed away.
Masonry Repointing & Crown Pouring
Bricks are repointed with polymer-fortified waterproof mortar. The top flaunching is poured with high-strength concrete around flue pots.
Code 4 Leadwork & Cowl Installation
New stepped lead flashings are dressed and chased into joints with lead wedges and silicone mastic. Anti-bird cowls are locked into place.
Frequently Asked Questions
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