Mason

What a mason does, and when to call one

A mason builds and repairs brick, block and stone, front steps, retaining and garden walls, walkways, and chimneys, and repoints the mortar joints between units once they crumble, crack or wash out over time. The masonry units themselves, the brick or stone, tend to outlast the house; the mortar holding them together is the part that ages and needs attention on a schedule of its own, often long before the brick or stone shows any wear at all.

Call one when mortar is visibly crumbling, missing, or soft enough to scratch out with a key, when steps are shifting, uneven or rocking underfoot, when a wall shows a new crack or appears to be bowing outward, or when chimney brick looks flaked and pitted (called spalling) or the mortar cap at the top, the crown, is cracked and missing. The chimney's structure is a mason's job; the flue and its draft are a chimney sweep's, and the two often need to be coordinated when a chimney has been neglected for a while and both problems show up together.

Masonry problems rarely announce themselves loudly at first. A little crumbling mortar or a hairline crack is easy to walk past for years, right up until it is not, which is exactly why this trade rewards catching things early rather than waiting for something visibly dramatic like a bowing wall or a genuinely leaning chimney.

A mason is also the right call for less urgent projects, walkways, garden walls, an outdoor fireplace, where the same attention to mortar and drainage that protects a chimney applies just as much to something built purely for how the yard gets used and enjoyed.

Mortar curing is temperature sensitive too, which is why masonry work in a cold climate tends to cluster in the warmer months. Repointing or rebuilding in genuinely cold weather is possible with the right additives and protection, but it adds cost and risk, so most of this work gets scheduled for spring through fall where winters are real.

How to choose one, and where this goes wrong

Ask specifically about the mortar mix they plan to use and whether it is matched to what is already there. This matters more than most people assume: mortar that is harder than the surrounding brick can actually trap moisture inside the brick itself, causing it to crack and flake from the inside out over time, an ironic way for a repair to create the next problem rather than solve the current one. A mason who asks about the age and type of the existing masonry before quoting a mix is paying attention to the part that actually determines whether the repair lasts, rather than just matching color at a glance.

• Hiring off a finished-look photo alone. Ask what mortar mix they use and why, and whether it is compatible with the original material, not just whether the after picture looks tidy from the sidewalk.
• Waiting for a wall to visibly lean. Small settling cracks and early mortar failure are dramatically cheaper to address than a wall that has already moved out of plumb and needs to be rebuilt rather than repaired.
• Skipping a specialist for chimney or structural masonry. A mason who mostly does patios and walkways may not be the right call for a leaning chimney or a load bearing wall, ask about their specific experience with the scope you actually need.

For anything touching a chimney or a structural wall, confirm who is responsible for a permit and, where required, an engineer's review, since both rules and thresholds vary by state and town, and a job that looks purely cosmetic from the ground can turn out to be structural once it is opened up.

A white, powdery residue on brick or block, called efflorescence, is a sign moisture is moving through the masonry and depositing minerals as it evaporates. It is not usually an emergency on its own, but it is worth pointing out to a mason as a clue to where water is getting in, rather than simply pressure washing it away and forgetting about it.

What drives the price

Scope is the main lever: repointing a section of mortar is a relatively small, contained job, while rebuilding a wall or a chimney from the ground up is a much larger one, closer to construction than repair, and priced accordingly. Material choice matters too, natural stone generally costs more than brick or a manufactured veneer, both for the material itself and for the skill and time it takes to set well, since stone rarely comes in uniform, easy to place pieces the way brick does.

Access changes labor cost independent of the masonry itself: a chimney repair worked from a steep roof costs more in setup, scaffolding and safety than a garden wall at ground level that a mason can simply walk up to. As with most of this guide, small and early beats large and deferred here specifically. A handful of damaged bricks or a section of failed mortar is a modest job; the wall or chimney they were quietly holding together is a much bigger one once it actually gives way, and by then the repair often needs to address not just the masonry but whatever it was protecting underneath, flashing, framing, or a chimney liner among them.

Matching old mortar is not just about the mix, color matters too, and an older house often used a mortar tinted differently from what comes out of a bag today. A mason experienced with older masonry will tint a batch to match rather than leave a repair looking like a patch, which takes more skill and time than a plain modern mix, and shows up in the price difference between a careful repair and a fast one. It is also worth asking whether the whole house genuinely needs repointing or only specific sections do, since repointing everywhere is sometimes recommended when a more targeted repair, done well, would hold for just as long at a fraction of the cost.