Repointing comes up a lot when a chimney starts showing its age, and it's often exactly the right fix — but it's worth understanding what it actually involves before assuming it's what your chimney needs. Here's a clear explanation from Back to Back Roofing Worcester.
What Is Repointing?
Repointing means raking out the deteriorated mortar between the bricks of a chimney stack and replacing it with fresh mortar. It's a targeted repair to the joints, not the bricks themselves, which is what makes it different from a rebuild.
Why Mortar Joints Fail Over Time
- Years of rain, frost and general weather exposure gradually erode the mortar
- Freeze-thaw cycles crack and loosen joints faster than steady weathering alone
- Poor quality mortar mix used in the original build or a previous repair
- General age, particularly on chimneys that haven't been maintained
Signs Your Chimney Needs Repointing
- Mortar that's visibly crumbling or missing between bricks
- Joints that feel soft or come away easily when gently tested
- Small pieces of mortar debris found in the garden or on the roof
- A chimney that looks generally weathered but is still structurally straight
How We Carry Out Repointing
- Assess the full stack. Checking how widespread the mortar deterioration actually is.
- Rake out the failed mortar. Removed to a suitable depth without disturbing sound brickwork.
- Repoint with an appropriately matched mortar mix. So the repair blends with the existing stack.
- Finish and inspect. Checking the completed work meets the standard we'd expect.
Benefits of Repointing at the Right Time
- Prevents water getting into the stack through failed joints
- A more affordable repair than a full or partial rebuild
- Extends the working life of an otherwise sound chimney
- Improves the chimney's appearance
Think your chimney's mortar joints need attention? We'll assess and repoint properly, not just patch the visible bits.
View Chimney Repairs →Why Choose Back to Back Roofing Worcester
We're a domestic and commercial roofing team based right here in Worcester, on Rose Avenue in WR4, so we know the area and can get to you quickly. Every job comes with clear pricing before work starts and workmanship you can rely on.