Foundation repair and replacement, Laurentians and North Shore: repair, reinforce or rebuild
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Foundation repair and replacement in the Laurentians, Laval and Lanaudière: Solution ProFissure works out of Sainte-Sophie with more than 30 years in the trade. Mortar repointing, steel anchors, bonded panel formwork or a full rebuild in poured concrete, we apply the lightest fix that truly settles the problem. Free assessment within 24 hours, transferable 25-year warranty.
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Repairing or replacing your foundation: what tips the decision
This is the only question that matters once you find a damaged foundation wall, and few contractors answer it plainly. The answer comes down to three things: the real condition of the concrete or masonry, the load-bearing capacity that remains, and the accumulated cost of the fixes already attempted.
What a repair takes care of
The large majority of files call for no rebuilding at all. A concrete block wall whose mortar joints have crumbled, a wall that has started to move under soil pressure, a section of rubble stone flaking at the surface, water seeping through an open joint: all of this is treated in place, without demolition. The house stays livable and the work is measured in days rather than weeks.
The six signs that call for a replacement
Past a certain threshold, repairing simply postpones the bill. These are the signs that tip a file toward foundation replacement:
- A foundation wall that bows, leans or has shifted horizontally by a measurable amount
- Concrete breaking down in depth, with delamination, widespread crumbling or exposed steel reinforcement
- Active structural cracks that reopen every year despite sealing and injection
- Visible settlement in the house: a sloping floor, doors and windows that stick
- A footing that is missing, too narrow, or poured above the frost line
- A partial collapse, or deterioration caused by pyrite swelling the concrete from within
The economic threshold that settles it
The calculation is as financial as it is technical. Once the running total of repeated interventions approaches half the price of a rebuild, replacing becomes the rational choice. A major renovation, an addition or a full-height basement project sometimes pushes the decision the same way, because the existing foundation will not carry the new loads.
A foundation is not replaced because it worries you. It is replaced when it no longer carries.
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Our foundation repair solutions
At Solution ProFissure, we favour the least invasive intervention that truly settles the problem. Three structural techniques cover most cases.
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Our Commitments
Why choose Solution ProFissure?
Superior Quality
Professional work meeting the highest standards to ensure the strength and durability of your home.
Fast Estimate 24/7
Callback and free estimate within 24 hours, available 7 days a week.
Transparency
Detailed quotes and clear communication throughout the work. No surprises on the bill.
Personalized Approach
Solutions tailored to your specific situation for lasting results and maximum satisfaction.
On-Time Delivery
Start dates and deadlines always met. Efficient work to minimize disruptions.
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Foundation replacement, partial or complete
Behind the word replacement sit two very different scales of project, and two budgets with nothing in common.
01Partial replacement of one section+
- Demolition of only the compromised portion
- Footing preparation and a new reinforced concrete wall poured and tied into the existing one
- The rest of the perimeter is kept
- The most economical route when a single elevation has failed, limiting excavation to one part of the property
02Full replacement with house lifting+
- The house is shored and raised on hydraulic jacks and temporary steel beams, with the brick supported where the cladding requires it
- Full excavation of the perimeter and removal of the old foundation
- New footings poured and new reinforced concrete forms that meet current standards
- Waterproofing membrane, a new French drain and, where needed, a rebuilt basement slab
- Requires a structural engineer's drawings and a municipal permit, prepared with you as early as the quote
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Our Projects
Every project reflects our commitment to excellence and attention to detail.
Have your foundation assessed free of charge, within 24 hours
An RBQ certified expert comes to you at no cost, measures the real condition of your foundation and tells you plainly whether a targeted fix will do.
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Why Quebec foundations deteriorate
The climate here does a good share of the damage on its own. Freeze-thaw cycles lift the soil and drop it again several times each winter, and that repeated pressure eventually opens joints, shifts blocks and cracks concrete.
The frost line sits between 4 and 5 feet depending on the region: any footing poured above that depth is under constant strain. Clay soils, very common across the Laurentians and Lanaudière, swell during the spring melt then shrink in summer, and clay on the move amplifies soil heaving. Add deficient drainage and hydrostatic pressure builds against the wall, dampness settles into the basement and deterioration accelerates. That is also why we treat the foundation, the drain and the waterproofing as a single system within our full range of foundation protection services.
How much does foundation repair or replacement cost?
No single price exists, but the order of magnitude is easy to remember. A localized structural repair runs into the thousands of Canadian dollars, a partial replacement into the tens of thousands, and a full replacement with lifting often exceeds $100,000. The spread comes from the area and perimeter to be excavated, the soil type and any bedrock, site access for machinery, the depth of the basement or crawl space, and the condition of the existing foundation. For detailed ranges in Canadian dollars, see our guide to the cost of a foundation replacement in Quebec, which breaks down each item per linear foot.
Crack or foundation: which service applies to you?
The line is easy to draw. If your problem is limited to one or two foundation cracks in a wall that is otherwise sound, it belongs to foundation crack repair: polyurethane injection, steel plates, cold joint repair, hydrophobic membranes. If the wall is moving, crumbling or no longer carrying its load, you are in the right place: that is structural, and this page covers foundation repair and replacement as a whole.
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What changes with the type of foundation
Two neighbouring houses with the same symptom do not get the same diagnosis. The original material determines both the method and the tipping point.
The poured concrete foundation
It cracks mainly through shrinkage, soil movement or the ageing of the concrete. As long as the reinforcement is untouched and the thickness remains sound, structural repair is almost always enough.
The concrete block foundation
It tolerates spot fixes poorly once the joints open or the wall begins to bow. Blocks shifting out of line, along with horizontal and vertical cracking at the junctions, signal a need for anchors, then for a rebuild if nothing is done.
The rubble stone foundation
Typical of older Quebec houses, this fieldstone masonry calls for specialized labour. Repointing gives it years of useful life back, but once the stone has lost its load-bearing capacity, only a rebuild settles the file.
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The transferable 25-year warranty, our commitment
This is one of the largest projects a homeowner will ever take on, and its value rests as much on the durability of the work as on the warranty of the contractor who signs it. At Solution ProFissure, a family business, RBQ certified for over 30 years, every foundation repair and every foundation replacement carries a transferable 25-year warranty, unique in the industry.
Transferable means exactly what the word says: it follows the property and passes to the next buyer, which becomes a concrete selling point at resale. Behind that commitment stand more than 1,300 satisfied customers, more than 350 projects completed in 2024, RBQ licence 5770-6285-01 and a free on-site assessment within 24 hours.
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How a foundation project unfolds, step by step
Every project starts with an on-site inspection and a detailed line-by-line quote. Here is the typical sequence, with the real durations we observe on our residential sites.
- Careful excavation (1 to 2 days). Precise opening of the perimeter down to the footing, with mini-excavation where site access demands it.
- Repair or rebuilding work (1 to 5 days). Repointing, reinforcement, formwork, or demolition and pouring, depending on the diagnosis.
- French drain (1 day). Installation or replacement of the foundation drain, with a sump pump where a gravity outlet is impossible. Our French drain and groundwater management service, known to many homeowners as weeping tile, removes water from the soil, never wastewater.
- Protective membranes (1 day). Installation of a Delta-MS membrane or a liquid rubberized membrane, the foundation waterproofing side of the project.
- Backfill and finishing (1 to 2 days). Careful backfilling, drainage slope directed away from the building, restoration of the grounds and of the window well.
Reopening the ground is expensive, which is why drainage, waterproofing and finishing are all settled during the same project as the foundation itself.
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Foundation Repair and Replacement in the Laurentians, Laval and Lanaudière
Our crews leave from Sainte-Sophie and cover the Laurentians, Laval and Lanaudière. We work across Sainte-Sophie, Saint-Jérôme, Mirabel, Blainville, Saint-Eustache, Saint-Colomban, Saint-Hippolyte, Sainte-Anne-des-Plaines, Sainte-Thérèse, Saint-Sauveur, Saint-Lin-Laurentides, Laval, Rosemère, Terrebonne and Mascouche. Call us for the local soil conditions and the sectors served in your municipality.
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Frequently asked questions about foundation repair and replacement
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How do I know whether my foundation should be repaired or replaced?
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Only an on-site inspection can settle it. We measure how far the wall has moved, probe the concrete or masonry to gauge the load-bearing capacity left, and check the depth of the footing and the state of the drainage. A stable wall is repaired; a wall that moves, that crumbles in depth, or whose footing sits too high is replaced.
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Do I need a permit and an engineer to replace a foundation?
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Yes, for any structural work. Most municipalities require a permit, and drawings signed by a structural engineer become mandatory as soon as house lifting or a complete rebuild is involved. We prepare that compliance with you as early as the quote stage.
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Can we live in the house during the work?
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For a structural repair or a partial replacement, yes in the vast majority of cases. For a full replacement with shoring and lifting, the building must be vacated for the duration of the demolition and the pour, for safety reasons.
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How long does the work take?
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A foundation repair is generally completed in 3 to 7 days, including membranes, slab and backfill. A partial replacement takes one to two weeks, and a full replacement with lifting four to eight weeks, depending on the weather, site access and concrete curing time.
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Do you repair rubble stone and fieldstone foundations?
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Yes, and it is a significant part of our work in the older sectors of the Laurentians. Mortar repointing, anchors and support beams give a rubble stone wall decades of useful life back, as long as the stone retains its load-bearing capacity.
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Do you install piles to stabilize a foundation?
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No. Our specialty is rebuilding the foundation wall itself, through reinforcement, formwork or reconstruction in reinforced concrete, with the French drain and waterproofing that go with it. Stabilization on piles belongs to another trade, and we will tell you so plainly.
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Does the 25-year warranty also apply to a repair?
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Yes. Every foundation repair and every foundation replacement we carry out is covered by the same transferable 25-year warranty, which passes to the next owner of the house.
Have a foundation you need assessed?
An RBQ certified expert comes out free of charge, gives you an honest diagnosis and hands you a detailed quote with no obligation. Targeted repair or complete rebuild, the transferable 25-year warranty applies either way.