Exterior Repairs & Installation · Property Services

Masonry, Brick & Chimney Repair

Brick and stone last for generations, but the mortar between them does not. As joints crack and crumble, water gets in, freezes and loosens the units, and the wall slowly loses its strength. Catching it early with careful repointing and the right mortar keeps a masonry wall or chimney sound for decades. NorTech connects you with vetted independent masons who inspect first and set their own price.

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Why mortar fails and what repointing does

Mortar is meant to be softer than the brick, so it takes the wear instead of the units. Over time rain, sun and settling erode it, leaving open joints that let moisture reach the interior of the wall. Repointing removes the failed mortar to a safe depth and replaces it with fresh mortar that matches the original in color, strength and texture. Using a mix that is too hard can damage old brick, so matching matters more than speed. Take a few photographs of the cracks and the areas with missing mortar, and note any places inside the house where you have seen moisture or staining near the wall.

Chimneys need extra attention above the roof

A chimney is the most exposed part of a brick structure, taking wind, rain and temperature swings all year. Common problems include a cracked crown, loose bricks near the top, failing flashing and water staining on the inside. Providers inspect the crown and the cap and may recommend a water-repellent sealer that still lets the masonry breathe. A leaning or severely cracked chimney should be evaluated by a licensed contractor because it can be a safety risk. If the chimney is in use, let the mason know the fuel type and when it was last cleaned, since combustion by-products can affect the masonry and the flue liner.

Knowing when repair is enough

Hairline joint cracks and a few loose bricks are repairable, while bulging walls, large diagonal cracks and widespread spalling suggest a structural problem. Earthquake-prone areas make this especially important for older unreinforced masonry. A mason will point out which situation you have, and may suggest a structural assessment if needed. Ask for photos of the damaged areas before and after repair so you can see exactly what was done. Ask the mason about the mortar mix they plan to use and whether it matches the original, because a harder mix can damage softer old brick over time.

When to book masonry, brick & chimney repair

Mortar joints are crumbling, recessed or sandy to the touch.

You can see cracked or loose bricks in a wall, step or chimney.

Water stains or efflorescence are showing on the masonry.

The chimney crown is cracked or the cap is missing.

A previous repair used mismatched mortar and looks patchy.

You want to preserve an older brick facade or retaining wall.

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Frequently asked

Masonry, Brick & Chimney Repair — common questions

Tuckpointing is a method of finishing repointed joints so they look crisp and uniform. Many people use the term loosely for any mortar repair. A mason can tell you what your wall needs.

Typically to about twice the width of the joint, enough for the new mortar to bond well. Cutting too deep or too aggressively can damage the bricks. A mason checks the depth as the work goes and adjusts for each wall, since soft old brick needs a gentle touch.

It can be, depending on the crack and whether the chimney is still in use. A leaning chimney or one with loose bricks should be inspected promptly. Until it is inspected, avoid using the fireplace if you notice loose bricks, a leaning stack or smoke entering the room.

A skilled mason can match color and texture closely, though old mortar weathers and the match improves over time. Ask for a sample patch. Keep in mind that mortar color shifts as it cures, so judge the final match after it has dried.

Sealers designed for masonry can help, but a coating that traps moisture inside the wall can cause damage. Ask your mason to recommend a breathable product.

The 90-day workmanship warranty covers the repaired joints and any replaced bricks, such as mortar that fails to bond. New damage from settling or from structural problems is outside it.

Didn’t find your answer? Nova, our AI assistant, is in the chat bubble in the bottom-right corner and can help anytime.

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