When you search for epoxy flooring on the South Shore, you quickly find a dozen companies, prices ranging from low to triple, and websites that all look the same. What those sites don't say: the South Shore is twenty cities with completely different housing stock, concrete with very different histories, and problems that vary by neighbourhood. A garage in Candiac built in 2012 is a different project than a garage in Vieux-Longueuil from 1958 — even if the quote request looks identical.
Residential suburban home with garage on the South Shore — starting point for an epoxy project
The South Shore Is Not a Uniform Market
The five most active zones for epoxy projects on the South Shore have very different concrete profiles.
Longueuil concentrates most of the oldest housing stock — post-war homes in Vieux-Longueuil and LeMoyne, sometimes thin concrete slabs, and water infiltration problems that have gone unresolved for twenty years. This is where mechanical preparation takes the longest, and where diagnostic surprises are most frequent.
Brossard is a city of the 1970s and 80s. Concrete is generally standard, but decades of motor oil, salt, and freeze-thaw cycles have taken their toll. The N sector of Brossard has garages in better average condition than the R sector — though it's not an absolute rule.
Boucherville and Saint-Bruno-de-Montarville have more heterogeneous housing stock — 1960s construction alongside homes from the 2000s. Concrete is generally in better shape than Longueuil, but not uniformly. The larger garages in Saint-Bruno in particular are often in respectable condition.
La Prairie, Candiac, and Sainte-Catherine are the South Shore cities with the most recent construction on average. Concrete there is often in better condition — which means less preparation and slightly lower costs. The exception: homes under five years old, where concrete may still be too moist for epoxy.
Chambly, Carignan, and municipalities further east often have larger garages, concrete from various eras, and slightly fewer competitors — which sometimes works in your favour for quotes.
For city-specific details, I have articles on [epoxy flooring in Longueuil](/blog/plancher-epoxy-longueuil) and [epoxy flooring in Brossard](/blog/epoxy-flooring-brossard), with local prices and specifics.
Worker applying primer on a concrete floor — mechanical scarification and primer are the key steps before epoxy
The Common Denominator: Road Salt
All South Shore cities share a challenge contractors rarely mention clearly: the amount of de-icing salt that enters residential garages every winter.
Highways 10, 20, and 30, the Samuel-De Champlain bridge, Route 116, Chemin de Chambly — all of this network is generously salted from November to April. That salt comes in on tires and boots, settles on the concrete, and attacks the epoxy layer with each melt-refreeze cycle.
A properly prepared epoxy system resists this for twelve to eighteen years. A poorly prepared one will start peeling at the entry zones by the third or fourth winter. You'll first see small lifts at the joints between the floor and the garage door, then blisters where snow melts fastest.
Salt resistance comes from two things: product quality and concrete preparation. If the epoxy adheres properly — which requires mechanical scarification, not just cleaning — it holds. If adhesion is insufficient, salt finds entry points and does its work.
I have a complete article on [epoxy facing the Quebec climate](/blog/epoxy-climat-quebec) that covers freeze-thaw cycles, magnesium vs. sodium chloride, and why some products last eighteen years while others peel by the spring after installation.
Epoxy or Polyaspartic: The Comparison for the South Shore
| Criterion | Standard Epoxy | Polyaspartic |
|---|---|---|
| Price (double garage ~450 sq ft) | $2,200 – $3,800 | $3,200 – $5,000 |
| Car return | 72 hours | 24-48 hours |
| UV resistance | May yellow (sunny garage) | UV resistant — no yellowing |
| Salt and freeze-thaw resistance | Good (professional system) | Very good — more flexible |
| Application temperature | ≥ 10°C on the slab | Better cold tolerance |
| Lifespan | 12-18 years | 15-20 years |
For most South Shore garages, epoxy with flakes offers excellent value. Polyaspartic is worth the difference if you have a very sun-exposed garage, if you want cars back in under 48 hours, or if you want the best possible salt resistance.
I compared the two in detail in an article on [epoxy vs. polyaspartic](/blog/epoxy-vs-polyaspartique), with concrete scenarios.
Epoxy Floor Prices on the South Shore in 2026
| System | Single garage (~250 sq ft) | Double garage (~450 sq ft) | Triple garage (~650 sq ft) |
|---|---|---|---|
| Basic solid epoxy | $900 – $1,500 | $1,800 – $2,800 | $2,400 – $3,800 |
| Epoxy with flakes | $1,250 – $2,000 | $2,400 – $3,800 | $3,200 – $5,000 |
| Polyaspartic | $1,600 – $2,800 | $3,200 – $5,000 | $4,500 – $7,000 |
Concrete condition can add $500 to $1,500 if significant repairs are needed before application — a reality particularly common in homes built before 1975. These prices include mechanical preparation, minor crack repair, and two to three coats of product.
For a [residential garage](/services/residential-garage), get at least two quotes with an on-site visit. For a [commercial project](/services/commercial-industrial), an on-site assessment is essential.
Roller applying coating on a residential floor — each epoxy layer is rolled and left to dry before the next
Questions That Filter Good Contractors
Three questions to ask before signing anything.
"What concrete preparation method will you use?" The right answer involves mechanical scarification — shot blasting or diamond grinding. Pressure washing alone doesn't cut it. I explain why in detail in an article on [concrete preparation before epoxy](/blog/pourquoi-preparer-beton-avant-epoxy).
"What is your RBQ licence number?" A contractor working on a residential concrete slab in Quebec must hold a valid RBQ licence. Check at [rbq.gouv.qc.ca](https://www.rbq.gouv.qc.ca/) by entering the company name — takes two minutes. If the contractor hesitates, keep shopping.
"Do you do a concrete moisture test before starting?" Concrete with capillary moisture — common in homes built before 1970 and in basements — doesn't hold epoxy properly. Blisters appearing in the first year are almost always linked to a moisture problem not detected before application. A serious contractor tests before starting.
When to Plan Work on the South Shore
The ideal window is mid-May to end of September. Epoxy requires a concrete temperature of at least 10°C during application and curing — which rules out winter for the majority of unheated garages.
Two practical observations: late summer is often better than early spring. In April and early May, slabs are still saturated with melt moisture. In August and September, they're dry and recent freeze-thaw cycles are distant.
Demand is also stronger in May-June. Good South Shore contractors fill their calendars early in the season. If you want to work with the best, plan in March for work in July-August.
A double garage installation takes two days: mechanical preparation and primer on day one, epoxy and topcoat on day two. Allow 24 hours to walk on it, 72 hours for cars (standard epoxy) or 24-48 hours (polyaspartic). The garage is out of service for 2 to 3 days.
Ready? [Request a quote here.](/#contact) We visit in person to assess your slab — no prices sent by email without seeing your concrete.
What is the price of epoxy flooring for a double garage on the South Shore?
For a double garage (400-500 sq ft), expect $2,400 to $3,800 for a flake epoxy system, $1,800 to $2,800 for basic solid epoxy, or $3,200 to $5,000 for polyaspartic. Concrete condition can add $500 to $1,500 if significant repairs are needed. Prices are relatively uniform across the South Shore — what varies most is the amount of preparation required depending on the age of the home.
Can you install epoxy in a basement on the South Shore?
Yes — and it's an excellent application. Basement concrete sits at a more stable temperature, which makes application easier. The main challenge is moisture: a basement with infiltrations must be treated before the epoxy, not after. A good contractor does a moisture test before starting.
Does epoxy resist the de-icing salt used on South Shore roads?
A professionally prepared system holds well for 12 to 18 years for standard epoxy, and 15 to 20 years for polyaspartic. Resistance comes above all from concrete preparation quality. Epoxy on poorly prepared concrete will start peeling at entry zones after 2 to 4 winters.
Do epoxy prices vary by city on the South Shore?
The product is the same everywhere, but preparation — and therefore cost — can vary depending on the age and condition of the concrete. Older homes in Longueuil generally require more work than recent construction in La Prairie or Candiac. This is why an on-site visit is essential before getting a realistic quote.
Can epoxy be applied in autumn on the South Shore?
Yes — September and early October are excellent. The concrete is dry, temperatures are still warm enough, and it's often less busy than May-June. Avoid applying if temperatures below 5°C are forecast within 48 to 72 hours after application.
Is an RBQ licence required to install epoxy on the South Shore?
Yes. For any work on a residential concrete slab in Quebec, the contractor must hold a valid RBQ licence. Verify for free at rbq.gouv.qc.ca by entering the company name. This check takes two minutes and protects you legally in case of dispute.
Expert Epoxy South Shore
Epoxy and polyaspartic flooring specialist with over 15 years of experience. RBQ-certified contractor serving the entire Montreal South Shore.