- By Forte
- In Brick Work
When and Why Ottawa Homeowners Need Brick Repointing?
Sooner or later, almost every brick home in Ottawa needs it. The mortar between the bricks starts to crumble, thin gaps appear along the joints, and small piles of sandy grit collect at the base of the wall. That is your home asking for brick repointing and knowing when and why it matters can save you thousands. In this complete guide, our masons explain what repointing actually is, the warning signs to watch for, how it differs from tuckpointing, and why Ottawa’s climate makes it a question of when, not if. Because we have repointed brick across the city for over 20 years, everything below reflects real local experience, not generic advice.
What Is Brick Repointing?
Repointing brick is the process of removing old, deteriorated mortar from the joints between bricks and replacing it with fresh mortar. The bricks themselves usually stay in place; it is the mortar the material that binds and seals the wall that wears out first. In fact, mortar is designed to weather before the brick does, acting as a sacrificial layer that protects the more expensive masonry around it. Consequently, renewing those joints restores both the strength and the water resistance of the wall.
Think of mortar as the seal on your home’s masonry envelope. Once it fails, water finds its way in and in our climate, water is the enemy. Timely repointing is therefore one of the most important forms of masonry restoration a brick home will ever need.
Why Ottawa Homes Need Repointing More Often
Ottawa’s freeze-thaw climate is uniquely hard on mortar joints. Throughout winter, our temperatures cross the freezing point dozens of times. Each time, water that has soaked into the joints freezes, expands by roughly nine percent, and pries the mortar apart a little more. As a result, many older homes in Centretown, the Glebe, Sandy Hill, and Old Ottawa South show crumbling joints decades before homes in milder climates would.
This same moisture cycle is what causes brick faces to flake and break away. If you are seeing that kind of surface damage too, our guide on why bricks crack and spall in Ottawa winters explains how the two problems are connected and why fixing the mortar early often prevents the brick damage that follows.
When Does Brick Need Repointing? Warning Signs to Watch For
As a general rule, mortar joints last 20 to 30 years before they need attention but Ottawa’s climate can shorten that. Rather than counting years, watch the wall itself. Book an inspection if you notice any of these signs:
- Crumbling or powdery mortar that flakes away when you scratch it with a key
- Visible gaps, cracks, or missing sections in the joints between bricks
- Mortar erosion deeper than about 6 mm, leaving the joints noticeably recessed
- Sandy grit or mortar fragments collecting at the base of the wall
- White, powdery staining (efflorescence) a clear sign water is moving through the masonry
- Loose or shifting bricks, or hairline cracks running along the joints
Catching these early keeps the job small. Left alone, failing joints let water reach the brick, which then spalls, cracks, and eventually loosens turning a straightforward repointing into a far larger brickwork repair. In short, the wall tells you when it is time; the trick is listening before the damage spreads.
Repointing vs. Tuckpointing: What Is the Difference?
These two terms are often used interchangeably, but they are not the same thing. Understanding the distinction helps you know exactly what your home needs and what you are paying for.
| Repointing | Tuckpointing | |
| Purpose | Structural repair restores failing joints and water resistance. | Mainly cosmetic sharpens the look of the joints. |
| What it does | Removes deteriorated mortar and repacks it with fresh, matched mortar. | Adds a thin contrasting line to create crisp, uniform joint lines. |
| Best for | Crumbling, cracked, or eroded mortar. | Sound mortar that simply looks tired or mismatched. |
| Priority | Do it promptly it protects the structure. | Optional an aesthetic upgrade, not a repair. |
For most Ottawa homeowners dealing with weather-worn joints, repointing is the job that actually matters, because it addresses the structure and keeps water out. Tuckpointing is a finishing touch you can add afterward if you want a sharper facade.
How Professional Brick Repointing Works
A proper repointing job follows a defined process. When our masons repoint a wall, the steps look like this:
- Assess the mortar and match it. We identify the existing mortar type and mix a compatible replacement critical on older Ottawa homes.
- Rake out the failed mortar. We remove deteriorated mortar to a consistent depth, cleaning the joints without damaging the brick edges.
- Repack with fresh mortar. We press new mortar firmly into the joints in layers so it bonds properly and leaves no voids.
- Tool and finish the joints. We shape each joint so it sheds water instead of holding it, matching the original profile.
- Cure correctly. Fresh mortar needs mild temperatures and time to cure, which is why timing the work matters in our climate.
Why the Right Mortar Matters (and Why DIY Often Fails)
Here is the detail that separates lasting work from a repair that fails within a season: the mortar must be softer than the brick. That may sound counter-intuitive, but it is essential. Softer mortar lets moisture escape through the joints instead of forcing it into the brick. When a previous contractor or a well-meaning homeowner uses hard modern Portland cement on an older wall, the stress transfers to the brick, which then cracks and spalls instead. This is one of the most common causes of avoidable masonry damage we see across Ottawa.
For that reason, repointing rewards experience. Matching historic mortar, raking to the correct depth, and tooling joints properly are skills that take years to master which is exactly why homeowners across the city turn to experienced masonry contractors in Ottawa rather than treating it as a weekend project.
Does Your Chimney Need Repointing Too?
Chimneys are usually the first part of a home to need repointing, because they are fully exposed to weather on every side. If you are already planning brick work, it is worth having the chimney checked at the same time. Our chimney masonry repair service handles repointing at height, and you can find real 2026 numbers in our guide to how much chimney repair costs in Ottawa.
Noticing crumbling mortar? Get a free repointing estimate.
With over 20 years serving Ottawa, our masons match mortar correctly, protect your brick, and deliver repointing that lasts on time and on budget. Visit our Ottawa Brick Work & Repairs page or request a free quote today.
Frequently Asked Questions
How often does brick need repointing?
Mortar joints typically last 20 to 30 years, but Ottawa’s freeze-thaw climate can shorten that. Rather than tracking the calendar, watch for crumbling mortar, recessed joints, or grit at the base of the wall those signs mean it is time, regardless of age.
What is the difference between repointing and tuckpointing?
Repointing is a structural repair that removes and replaces failing mortar to restore strength and keep water out. Tuckpointing is mainly cosmetic, adding fine contrasting lines to sharpen the look of the joints. Most homeowners need repointing; tuckpointing is an optional finish.
Can I repoint brick myself?
It is risky. Using the wrong mortar especially hard modern cement on older brick transfers stress to the brick and causes cracking and spalling. Because matching mortar and tooling joints correctly takes real skill, most Ottawa homeowners hire experienced masonry contractors to protect the wall.
What happens if I ignore failing mortar?
Water gets in. Once the joints fail, moisture reaches the brick, which then spalls, cracks, and loosens over successive freeze-thaw cycles. A small repointing job left too long becomes a much larger and costlier brickwork repair or partial rebuild.
When is the best time to repoint brick in Ottawa?
Fresh mortar needs mild temperatures to cure, so late spring through fall is the working season. Inspect in early spring after winter has revealed the damage, then schedule the work for warm months so it cures fully before the next freeze.
