Typical lifespan
Well-executed repointing in the correct mortar lasts 25 to 50+ years on walls. Chimneys and parapets, exposed on all sides, typically last 15 to 30 years.
What shortens mortar life
- Shallow repointing (skim coats) that pops out within a few winters
- Mortar harder than the brick, causing brick spalling
- Missing gutters, bad flashing, or no chimney cap
- De-icing salt splash near steps and foundations
How to make it last
Rake joints to proper depth, match mortar to the brick, cure it properly, and manage water above the wall. Those four things account for nearly all long-lasting repointing.
Frequently asked questions
What is the best mortar for repointing old brick?
Usually a lime-rich mortar (Type O or Type N, or natural hydraulic lime), matched to the original after analysis.
Can repointing be done in winter?
Yes with protection and heated materials, but spring through fall gives the best cure.
How do I know my joints need repointing?
Mortar recessed more than a quarter inch, crumbling, or cracks through joints all indicate it's time.
Get brick & stone repointing near you
- Brick & Stone Repointing in Boston
- Brick & Stone Repointing in Cambridge
- Brick & Stone Repointing in Somerville
- Brick & Stone Repointing in Brookline
- Brick & Stone Repointing in Newton
- Brick & Stone Repointing in Quincy
- Brick & Stone Repointing in Waltham
- Brick & Stone Repointing in Lynn
- Brick & Stone Repointing in Salem
- Brick & Stone Repointing in Framingham
- Brick & Stone Repointing in Lowell
- Brick & Stone Repointing in Worcester