When Brick Mortar Needs Repointing:
Signs Homeowners Should Not Ignore
Brick homes and masonry features are built to last, but the mortar joints between the bricks do not last forever. Over time, weather exposure, freeze thaw cycles, age, and moisture can cause mortar to deteriorate. When that happens, repointing may be needed to restore the strength, appearance, and weather resistance of the masonry.
At Arthur James Construction, we work on masonry projects involving aging brick, deteriorated mortar joints, water related damage, and restoration work. Repointing is one of the most important maintenance and repair services for preserving brickwork properly.
What repointing means
Repointing is the process of removing damaged or deteriorated mortar from the joints between bricks and replacing it with new mortar. The goal is to restore the masonry so it remains stable, protected from water intrusion, and visually consistent with the rest of the structure.
This is different from simply smearing new mortar over old joints. Proper repointing involves removing failed material to the appropriate depth and installing new mortar carefully so the repair lasts and looks right.
Why mortar joints matter
Mortar does more than fill the space between bricks. It helps lock the masonry together, seals joints against weather, and plays an important role in how the wall sheds moisture. When mortar begins to fail, water can enter more easily, bricks can loosen, and the wall can become more vulnerable to ongoing damage.
In climates with freeze thaw conditions, damaged mortar can become a bigger problem quickly once water starts getting into open joints.
Common signs brick mortar may need repointing
1. Crumbling or missing mortar
One of the clearest signs is mortar that is breaking apart, falling out, or missing from the joints. If you can see gaps between bricks or easily scrape out loose mortar, the wall may need attention.
2. Cracks in the mortar joints
Small cracks in mortar joints can allow water into the masonry. Over time, those cracks may widen or lead to further deterioration, especially when exposed to repeated freezing and thawing.
3. Loose bricks
If bricks begin to shift or feel loose, failed mortar joints may be part of the problem. The mortar helps hold the wall together, and once it deteriorates enough, stability can be affected.
4. Water getting into the wall
Deteriorated mortar can allow moisture into the masonry system. This may show up as damp interior walls, staining, efflorescence, or visible moisture problems around the brickwork.
5. Mortar joints pulling back from the brick
In some cases, the mortar shrinks, separates, or erodes away from the edges of the brick. This creates openings that let water in and reduce the integrity of the joint.
6. Spalling or damaged brick faces
When mortar fails and water enters the wall, freeze thaw cycles can start damaging the bricks themselves. You may see the surface of the brick flaking, chipping, or breaking apart. This is often a sign that the masonry system is no longer shedding water properly.
7. Aging masonry with visible wear
Older brickwork may not show dramatic failure, but widespread wear in the joints, uneven erosion, and weathered mortar can still indicate that repointing is needed before more serious damage develops.
What causes mortar to fail
Mortar joints wear out for a number of reasons, including:
age and long term weather exposure
repeated freeze thaw cycles
moisture entering the masonry
poor quality past repairs
hard mortar used on older softer brick
movement in the wall or structure
lack of maintenance over time
In many cases, the damage happens gradually and becomes more expensive to fix if ignored too long.
Why repointing should be done properly
Repointing is not just about filling joints with new mortar. The new mortar needs to be appropriate for the type of brick and the age of the structure. If the mortar is too hard, too soft, or poorly matched, it can affect both performance and appearance.
Proper repointing also matters visually. Mortar colour, joint profile, texture, and workmanship all affect how natural the repair looks once complete.
Repointing vs replacing brick
Not every masonry issue requires full brick replacement. In many cases, the bricks themselves are still in good shape and the real problem is deteriorated mortar. Repointing can restore the wall without rebuilding large sections unnecessarily.
That said, if some bricks have cracked, shifted, or spalled badly, the repair may involve both repointing and selective brick replacement.
When to act
Homeowners should not wait until mortar loss becomes severe. Once open joints start allowing more water into the wall, the damage can spread to surrounding mortar, nearby bricks, and even interior finishes depending on the location of the issue.
Catching deteriorated mortar early can help keep the repair more contained and preserve more of the original masonry.
A practical approach to masonry repair
At Arthur James Construction, we approach masonry repair with attention to the condition of the mortar, the type of brick, the extent of deterioration, and the overall appearance of the structure. Whether the work involves repointing, selective brick replacement, or broader restoration, the goal is to repair the masonry properly and maintain a finished result that looks consistent with the home.
Good masonry repair should not only hold up. It should also look right when it is done.
Need help with deteriorating mortar joints
Arthur James Construction provides masonry repair, restoration, repointing, and brickwork services for homeowners in Collingwood, The Blue Mountains, and surrounding areas. If your brickwork is showing signs of deteriorating mortar, it is worth addressing before water and weather cause more extensive damage.
