Brick and stone walls are built to last—but only if you maintain them properly. Neglecting masonry maintenance can lead to water infiltration, structural damage, and costly repairs that could've been prevented. Here's what homeowners and property managers need to know about keeping masonry in good condition and when to call a contractor.
Why Masonry Maintenance Matters
Masonry is durable, but it's not maintenance-free. Mortar deteriorates, bricks crack, and water finds its way into the smallest gaps. Over time, moisture damages the structure beneath the surface, weakening your walls and creating conditions for mold and decay. A small crack today becomes a structural problem in five years if left alone.
Regular maintenance catches issues early, extends the life of your walls, and protects your property's value. Most homeowners don't need major work every year, but seasonal inspections and minor repairs prevent expensive emergencies.
Know Your Masonry Condition
Start by doing a basic visual inspection yourself. Walk around your property and look for:
- Horizontal or diagonal cracks in mortar joints
- Missing or crumbling mortar between bricks
- Bricks that are spalling (surface flaking off)
- Stains, efflorescence (white powder), or discoloration
- Mortar that's soft or crumbles when you scratch it with a tool
- Water leaks on interior walls near the masonry
If you spot anything beyond surface dirt, photograph it and get a professional assessment. Most masonry contractors offer free inspections and can identify problems you might miss.
Repointing and Mortar Work
Mortar is the weakest component in masonry—it's designed to fail before the bricks do. When mortar joints break down, repointing (replacing old mortar) is the primary maintenance task.
Repointing costs typically range from $10 to $25 per square foot of wall, depending on the extent of deterioration and your location. A single-story wall section might cost $1,500–$3,500; a full house could run $5,000–$15,000. The timeline usually spans 2–4 weeks for a moderate project.
Proper repointing requires matching the original mortar composition (lime-based mortars differ from Portland cement), using correct techniques, and skilled craftsmanship. Cheap or rushed repointing can actually damage bricks. This is where hiring an experienced masonry contractor makes a real difference—they know local masonry styles and can ensure work meets standards.
Addressing Cracks and Damage
Small cracks in mortar (less than 1/4 inch) are candidates for caulking or pointing. Wider cracks, cracks in bricks themselves, or multiple cracks in a pattern suggest structural issues and need professional evaluation.
Spalling bricks—where the surface is flaking or chunks are missing—can be repaired by replacing individual bricks. A single brick replacement typically costs $100–$300 in labor plus materials, but addressing it quickly prevents water from getting behind the wall.
Larger structural cracks or bowing walls indicate serious problems. These require structural assessment and may need reinforcement, which is beyond typical maintenance.
Cleaning and Waterproofing
Clean masonry annually to remove dirt, algae, and debris that trap moisture. Soft washing (low-pressure water with specialized cleaners) is preferable to high-pressure washing, which can damage mortar joints. Expect to pay $500–$2,000 for cleaning a typical house exterior.
After cleaning and repairs, consider a breathable masonry sealer. This protects against water penetration while allowing the wall to dry (important for brick and mortar). Sealing costs $200–$800 depending on square footage. Reapplication every 3–5 years keeps the protection effective.
When to Call a Contractor
Handle routine cleaning yourself, but bring in a masonry contractor for:
- Mortar joints showing significant deterioration
- Cracks wider than 1/4 inch
- Water stains or leaks on interior walls
- Spalling bricks or loose bricks
- More than a few small repairs needed
- Older homes with historical masonry
If you're comparing contractors, ask about experience with your specific masonry type, warranty on work, and how they match mortar composition. Mercoly lets you compare and find trusted masonry contractors in your area, making it easier to get multiple estimates and see verified reviews.
Frequently Asked Questions
Q: How often should I have my masonry inspected? At minimum, inspect your masonry annually in spring, looking for winter damage. If you live in a climate with freeze-thaw cycles, twice-yearly inspections catch problems earlier.
Q: Is masonry sealer necessary, or just cosmetic? Sealer is functional, not cosmetic—it prevents water from entering the wall and causing structural damage. For older masonry with failing mortar, sealing buys you time before repointing becomes urgent.
Q: What's the difference between tuckpointing and repointing? Repointing replaces deteriorated mortar joints; tuckpointing is a cosmetic technique using two-tone mortar to make old joints look better. Repointing is the maintenance you need; tuckpointing is optional.
Get quotes from multiple masonry contractors today to understand what your walls need.