6 Common Masonry issues in the Northeast and How to Fix Them
What winter leaves behind in masonry systems
Masonry systems across the Northeast are exposed to some of the most aggressive environmental conditions in the country. Freeze-thaw cycles, wind-driven rain, and seasonal temperature swings place continuous stress on brick, stone, mortar joints, and sealants.
Many of these conditions develop gradually but become more apparent in the spring, when moisture movement and material changes begin to show at the surface.
How masonry deterioration develops
Masonry is often viewed as a durable, long-lasting system, but its performance depends on how well it manages water. When moisture enters the assembly and cannot properly drain or evaporate, it begins to break down materials over time.
As water moves through masonry, it can weaken mortar, cause cracking, and lead to internal damage that is not always visible from the exterior. Left unaddressed, these issues can impact both appearance and structural integrity.
1. Cracked or deteriorating mortar joints
Mortar joints are often the first point of failure in a masonry wall. Over time, exposure to moisture and temperature changes causes joints to crack, recede, or deteriorate.
How to fix it:
Repointing restores the integrity of the wall by removing damaged mortar and replacing it with new material that is compatible with the existing system. Proper joint preparation and material selection are critical to long-term performance.
2. Efflorescence and moisture staining
White, powdery deposits on the surface of masonry are a sign that water is moving through the wall and carrying soluble salts to the surface.
How to fix it:
Cleaning can address the visible staining, but the underlying issue is moisture movement. Identifying and correcting the source, such as failed flashing, poor drainage, or open joints, is necessary to prevent recurrence.
3. Cracked or displaced masonry units
Cracking in brick or stone can occur due to movement, thermal expansion, or structural shifts. In some cases, units may become loose or displaced.
How to fix it:
Depending on severity, repairs may include localized replacement of units, crack stabilization, or addressing underlying movement through expansion joints or structural corrections.
4. Failed sealants and transitions
Sealants at joints, windows, and transitions play a critical role in keeping water out of the building envelope. Over time, these materials break down due to UV exposure and movement.
How to fix it:
Removing and replacing failed sealants with properly specified materials ensures continuity at critical transitions and helps prevent water infiltration.
5. Water infiltration at wall assemblies
Water entering through masonry walls often appears far from its point of entry, making it difficult to diagnose without a system-level evaluation.
How to fix it:
Addressing water infiltration requires identifying entry points, evaluating flashing and drainage conditions, and ensuring that all components of the wall assembly are working together to manage moisture.
6. Spalling or surface deterioration
Spalling occurs when masonry surfaces begin to flake, chip, or break apart, often due to freeze-thaw cycles or moisture trapped within the material.
How to fix it:
Repairs may involve replacing damaged units, applying protective treatments, or correcting underlying moisture issues to prevent further deterioration.
Why early intervention matters for masonry
Masonry issues rarely remain isolated. What begins as minor joint deterioration or surface staining can lead to more extensive repairs if water continues to move through the system.
Addressing these conditions early helps preserve the integrity of the wall, reduce long-term repair costs, and avoid more invasive restoration work.
Where to focus your building evaluation
If your building is showing signs of masonry deterioration, the next step is understanding how moisture is interacting with the system. Consider:
• Where is water entering the wall assembly?
• Are joints, sealants, or transitions allowing moisture to pass through?
• Are visible issues tied to larger drainage or flashing conditions?
• Is the system allowing water to properly exit once it enters?
Planning ahead this season
Spring is an ideal time to evaluate masonry conditions after winter exposure. Identifying issues early allows facility teams to plan repairs, coordinate scopes of work, and address underlying causes before deterioration progresses.
Maintaining masonry performance over time
Masonry systems are designed to last, but their performance depends on proper maintenance and water management.
By understanding common issues and addressing them at their source, facility teams can extend the life of their buildings and maintain both performance and appearance over time.
If you’re seeing signs of masonry deterioration, TWC Phoenix can help evaluate conditions and recommend solutions that address the full building envelope.
