Masonry questions, answered

A heavy concrete cap poured directly over an older chimney is more common than it should be, and it usually causes more problems than it solves. Removing a cap like that is aggressive enough that it often damages the chimney structure underneath, down to the roofline, which turns the job into a rebuild rather than a simple repair. If a full rebuild isn't in the budget right now, filling the cracks with caulk and keeping water out of them can buy some time. But it's not a one time fix. It turns into a maintenance task you'll need to stay on top of every few years for as long as that cap stays up there. Most customers find it's less hassle in the long run to have it addressed properly once.

Drilling into older masonry follows the same general approach as newer work, with a few extra precautions. The best practice is to drill into the mortar joints rather than the brick itself. Mortar is easier and cheaper to patch, and drilling into it is less likely to damage the surrounding structure. A carbide tipped masonry bit and a slow pace help, especially if the mortar is a soft, lime based mix common in older buildings. Staying at least an inch in from any edge avoids cracking, and softer masonry calls for even more clearance.

Paint removal isn't something we take on as a service. It usually takes a lot of time and trial and error, and even then the results aren't guaranteed. The process can damage the brick, especially if it's a soft, low fired clay brick, which is porous and can lose its surface during cleaning. Even harder, fully fired brick often ends up with patchy results or paint left behind deep in the pores. For a do it yourself approach, a masonry specific chemical stripper or poultice made for brick, followed by a low pressure rinse, is the safer route. Sandblasting or high pressure almost always damages the brick's protective face and can lead to moisture problems and spalling.

Heaving under pavers or a brick patio is usually caused by water getting trapped underneath and then freezing, or by tree roots pushing up from below. A proper gravel base with good drainage, and keeping it clear of nearby tree roots, is the real way to prevent it. In a freeze thaw climate, brick or stone set in mortar directly on the ground tends to crack and heave over time. Pavers set in paver sand or polymeric sand hold up better and are easier to repair if heaving happens.

Repairing cracked or damaged block is usually possible, but repairing the foundation itself typically is not. It's important to know whether the settling has stopped before paying for a cosmetic patch, because if the building is still moving, the cracks are likely to come back. For that reason, this kind of patch work doesn't come with a warranty.

The biggest cause of ongoing settling around a foundation is water. A few things help control it: grade the soil so it slopes away from the house, keep gutters and downspouts clear and extend downspouts several feet away from the foundation, and keep large trees and shrubs a good distance from the house, since their roots pull water from the soil unevenly and can affect both plumbing and the foundation. If the cracks are large, diagonal, or the floors are sloping, that's usually a sign to bring in a structural engineer or a foundation specialist rather than a mason, since stabilizing the structure itself is outside what masonry repair can fix.

Once the source of the movement is addressed, we can come back and repair the block or brick damage itself.

A chimney cap without a drip edge is a common cause of this. Without a drip edge to direct water away, it runs straight down the face of the brick below the cap instead. Brick absorbs and releases moisture over time, and repeated freeze and thaw cycles wear at the surface where that water keeps hitting, which causes the brick to spall, flaking or crumbling at the surface. This kind of damage develops slowly, over years.

The fix is a new masonry crown with a proper drip edge, along with replacing the brick that has already spalled. The same issue often shows up on the sloped areas lower on the chimney, sometimes called the shoulders. Adding a matching cap with a drip edge there creates a sloped surface instead of a stepped one, which holds up better over time. Sealing the chimney can extend the life of the brick and mortar, but it's not a substitute for fixing a cap without a drip edge, and it doesn't guarantee that spalling won't continue.

Yes. Any freestanding masonry structure, whether it's a wall, a pillar, a gate post, a column, or a brick mailbox, needs rebar running through it and a proper footing underneath. These structures carry real loads from wind, soil movement, and in some cases a gate swinging on them, and masonry on its own isn't strong enough to handle that without reinforcement.

Brick and block mailboxes are a common example. They're small, so it's easy to assume they don't need the same care as a wall or a pillar, but a mailbox without rebar and a proper footing tips and tilts for the same reason a pillar does: there's nothing holding it upright against frost heave and ground movement over time.

Skipping the rebar and a proper footing is one of the most common ways a contractor cuts cost on this kind of work. It's less digging, less material, and less time, so the price looks better up front. The problem doesn't show up right away. It shows up months or years later, once the structure has been through enough storms or settling for the lack of reinforcement to catch up with it.

The footing also matters on its own. It needs to sit below the frost line for your area so the ground freezing and thawing underneath doesn't shift it over time. In the Treasure Valley, that's typically 24 inches, though it varies by city, so check with your local building department for the exact requirement where you live.

If a wall, pillar, post, column, or mailbox built without rebar or a proper footing has already cracked, tilted, or fallen, it usually needs to be rebuilt from the footing up rather than patched. A patch on something that still lacks reinforcement is likely to fail again the next time it's put under real load.

Cracking at the corners of thin veneer, whether it's brick, natural stone, or manufactured stone, is usually caused by movement in the wall itself, not sun or weather exposure. On a newer home, that points to how the veneer was installed rather than age.

If the cracking shows up on a house that's still within its builder's warranty period, it's worth bringing up with the builder first, since this is often a workmanship issue rather than something to pay for twice.

Patching the cracks is rarely a lasting fix. If the wall keeps moving, the cracks are likely to come back in the same spot. The only way to fix it for good is removing and reinstalling the veneer. How much sense that makes depends on the scale: a few cracked corners on a small section is a different situation than cracking that shows up across veneer covering most of the house. Either way, it's worth getting a professional opinion, since the right call depends on how much veneer is affected and how it was installed in the first place.

Yes, and it needs to go deeper than most other masonry footings. A retaining wall holds back the weight and push of the soil behind it, so the footing has to be built for that load, not just the weight of the wall itself. In some areas that depth can run 42 inches or more below grade, which is why it's worth having a mason evaluate the site rather than assuming an existing pad or slab will work.

A thin existing slab, like a 4 inch pad poured for something else, isn't built to take that kind of push. Building on top of it isn't something we'll do, since a wall like that is likely to crack or shift once the soil behind it starts working on it. A retaining wall built the right way starts with a proper footing poured for that purpose, which is how we approach every retaining wall job.

A denial isn't necessarily the end of the claim. It's worth asking your insurer for the complete engineering report, including all photos and video in their original resolution, along with a written denial letter naming the specific policy provision they're relying on. A summary isn't the same as the full report.

It also helps to ask your agent directly what kind of coverage you have. Some homeowners policies cover a loss unless it's specifically excluded; others only cover causes that are specifically listed. Which kind of policy you have changes what the insurer needs to show to justify a denial.

If you believe a claim wasn't handled fairly, Idaho homeowners can file a free complaint with the Idaho Department of Insurance's Consumer Affairs section at doi.idaho.gov. Their role is described as helping resolve disputes with insurers, not forcing a payment, but it puts the matter in front of a state regulator.

Idaho law also allows a policyholder to potentially recover attorney fees from an insurer that fails to pay a valid claim within 30 days of a proof of loss, if the dispute ends up in court or arbitration, though there are exceptions. That's a question for an insurance attorney, not something to assume applies to your situation. Many offer a free consultation.

This is general information, not legal advice. For anything specific to your policy or your claim, an insurance attorney or the Idaho Department of Insurance is the right place to go.

Yes, both extreme heat and cold can be a problem. Masonry mortar needs a certain temperature range to cure and bond correctly. In very cold weather, that range gets hard to control reliably, which can affect the strength of the finished work. In very hot weather, the mortar can cure too fast and not bond as well.

Heat creates another issue specific to chimney work: walking on asphalt shingles on a hot day can damage them, since the shingles get soft and are easier to scuff or dislodge.

Because of this, masonry work, especially anything involving a roof, is usually scheduled for spring or fall rather than the height of summer or the coldest part of winter, though that can shift depending on the specific job and the weather that year.