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Serving Ontario, CA and surrounding areas. (909) 738-1803
Crumbling mortar, spalling brick, or cracked block walls don't fix themselves. We restore your masonry so the damage stops spreading and your home is protected heading into the next rainy season.
Masonry restoration in Ontario, CA involves repairing, cleaning, and stabilizing brick, stone, or concrete block surfaces without replacing more than necessary - most projects are completed in one to three days depending on the scope.
Most homeowners in Ontario who call us are seeing something they have been meaning to address for a while: mortar that is crumbling between bricks, a crack in a block fence that keeps getting wider, or white chalky stains spreading across an exterior wall. These are not cosmetic problems. Each one is a sign that water is getting in somewhere it should not, and Ontario's cycle of intense summer heat followed by sudden winter rain events makes the damage spread faster than it would in a milder climate.
If your block fence or exterior wall is also showing structural stress, we often pair restoration work with stone masonry reinforcement to make sure the repair holds long-term. Every project starts with an honest assessment of what is actually causing the problem, not just what is visible on the surface.
Run your finger along the joints between bricks on your exterior wall or fence. If the mortar feels soft, flakes away easily, or has gaps where it used to be solid, those joints need repair. In Ontario's climate, once joints open up, the next rainy season will push water deeper into the wall with every storm.
Horizontal or stair-step cracks in a block wall are worth taking seriously, especially in Ontario where clay soils shift with every wet and dry cycle. These cracks will not close back up on their own. A masonry contractor can tell you whether the crack is cosmetic or a sign of something that needs structural attention.
Small chips, flakes, or rough pitted areas on a brick wall or concrete surface are called spalling - and they usually mean moisture has been getting in and breaking the surface apart from the inside. In Ontario, the combination of summer heat and winter rain makes this cycle common on older homes. Left alone, spalling spreads and weakens the surface.
Those chalky white streaks on brick or block walls are called efflorescence - mineral salts left behind when water moves through the masonry and evaporates on the surface. It is a reliable sign that water is moving through your masonry in a way it should not be. Treating the stain without fixing the moisture source will not solve the problem.
Our masonry restoration work covers the full range of what Ontario homeowners typically need. Repointing is the most common job - we remove deteriorated mortar from the joints between bricks or stones and replace it with fresh material matched to the existing surface. For homes with surface spalling or staining, we patch and treat affected areas and recommend a breathable sealer where it makes sense. For block fences and retaining walls showing stress cracks from soil movement, we stabilize the structure and repair the damaged sections.
When a project calls for more than surface restoration, we also offer fireplace installation and full structural rebuilds for chimneys or walls that have deteriorated past the point of repair. We also handle chimney crowns, caps, and flashing repairs that often go unnoticed until water has already gotten inside.
Best for homeowners with brick, stone, or block surfaces where joints are crumbling or missing in sections.
For brick or concrete surfaces that are flaking, pitting, or showing surface damage from moisture cycles.
For walls showing white mineral staining - we address the moisture source and treat the surface.
For fences or retaining walls with stress cracks or lean caused by clay soil movement in Ontario.
For chimneys with crumbling mortar joints, damaged crowns, or missing cap sections.
Recommended after restoration on surfaces with ongoing moisture exposure - breathable sealers only.
Ontario sits in the Inland Empire, where summer temperatures regularly exceed 100 degrees Fahrenheit and rainfall arrives in concentrated bursts from November through March. That cycle of baking heat and sudden soaking is hard on masonry. It opens small cracks during the dry months and then drives water deep into those cracks when the storms arrive. Homes built in the 1950s through 1970s - which make up a large share of Ontario's housing stock - have masonry that is now 50 to 70 years old. That puts it squarely in the range where mortar joints start to fail and surfaces begin to spall. If your home was built before 1980, a professional inspection of any brick or block on the property is worth doing even if nothing looks obviously wrong yet. The Brick Industry Association notes that small cracks and crumbling joints accelerate quickly once water finds a path inside.
The clay-heavy soils common across the Inland Empire add another layer of stress. That soil swells when wet and shrinks when dry, which puts constant pressure on block walls, retaining walls, and any masonry structure sitting close to grade. We work regularly in Rancho Cucamonga and Upland, where the same soil conditions apply, and we bring that knowledge of local conditions to every estimate we give in Ontario. HOA rules in Ontario's planned communities are also a factor - we understand what materials and finishes those communities typically require, which helps you avoid a compliance notice after the work is done.
Call or submit a form and we will respond within one business day. We will ask a few basic questions - what you are seeing, where it is, and roughly how old the structure is - before scheduling an on-site visit.
During the site visit, we check crack depth, test mortar joints, and look for signs of water intrusion or soil movement. We explain in plain terms what we find and what we recommend - no technical jargon, no pressure.
After the assessment you get a written estimate spelling out what work will be done, what materials will be used, and the total cost. No verbal quotes only. The written estimate protects you and gives you something to compare if you are getting bids from more than one contractor.
The crew grinds out old mortar, applies fresh material matched to the existing surface, and cleans up each day. After completion, fresh mortar needs several days to cure - we tell you exactly what to avoid during that window and what to watch for in the weeks ahead.
We respond within one business day, give you a written estimate, and do not start work until you have approved it.
(909) 738-1803California requires masonry contractors to hold an active Contractors State License Board license. Ours is verifiable in seconds on the CSLB website. That license means we carry required insurance and are accountable to a state agency - not just to a handshake agreement.
Ontario's expansive clay soils are a factor in nearly every block wall and retaining wall repair we do in the area. We factor local soil conditions into every estimate so the repair addresses the actual cause, not just the visible symptom. That knowledge comes from years of working in this specific region.
Using mortar that is too hard for the surrounding brick is one of the most common mistakes in restoration work - it causes the bricks themselves to crack over time. We assess the existing material before choosing what to use, following guidance from the International Masonry Institute on proper mortar selection.
Every project starts with a written estimate that spells out the scope, materials, and total cost before we touch anything. You will know exactly what you are paying for, and we do not add line items halfway through the job.
When you hire OT Ontario Masonry, you are working with a licensed contractor who knows Ontario's housing stock, its soils, and its climate. That local knowledge is what turns a surface repair into a lasting result.
Add a fireplace to your Ontario home with a full masonry build or a gas insert, permitted and inspected by the city.
Learn MoreNatural stone walls, veneers, and features that complement restored brick or block surfaces on your property.
Learn MoreOntario's rainy season can arrive quickly - lock in your repair date now and protect your home before the first storm of the season.