If you’re installing flooring in a Toronto condo with concrete subfloors, or finishing a basement, engineered hardwood is the clear choice — solid hardwood simply won’t work in those situations. For traditional homes with plywood subfloors where you want maximum refinishing potential over decades, solid hardwood still makes sense. Here’s the detailed breakdown so you can make the right call for your specific situation.
How They’re Made
Solid hardwood is exactly what it sounds like: a single piece of wood milled from top to bottom, typically 3/4” thick. Every layer you see, and the full thickness beneath it, is the same species of wood. Solid hardwood is installed by nailing or stapling it to a plywood or OSB subfloor — the mechanical fasteners hold it down while allowing the wood to expand and contract with seasonal humidity changes.
Engineered hardwood is a laminated product with a genuine solid wood veneer bonded to multiple layers of cross-laminated plywood or high-density fiberboard (HDF). The total thickness is typically 3/8” to 3/4”, with the real wood wear layer ranging from 1mm on budget products to 6mm on premium ones. The cross-laminated core is what makes engineered hardwood dimensionally stable — each layer is oriented at a right angle to the one above and below it, so the board resists the expansion and contraction that causes solid hardwood to move with humidity changes.
Engineered hardwood can be glued directly to concrete, floated over concrete with an underlayment, or stapled to a wood subfloor — it’s much more installation-method flexible than solid hardwood.
Durability & Lifespan
Solid hardwood can be sanded and refinished 8 to 10 times over its lifespan. Because the board is solid wood all the way through, each sanding removes a thin layer and you’re left with fresh, undamaged wood. With proper maintenance, solid hardwood floors can last 100 years or more — there are Victorian homes in the Annex and Cabbagetown with original floors that are still going strong.
Engineered hardwood can be refinished 1 to 3 times, depending on the wear layer thickness. A 3mm wear layer allows one careful sanding. A 5-6mm wear layer can handle two or three refinishes. Budget engineered products with 1-2mm wear layers cannot be refinished at all — once the surface shows wear, you’re replacing the floor. This is the most important variable to check when comparing engineered hardwood products.
For daily wear resistance, species hardness matters more than solid vs. engineered. A hard-maple engineered floor will handle traffic better than a soft-pine solid floor. The Janka hardness rating is what to compare when evaluating scratch and dent resistance between species.
Moisture & Humidity Performance
This is the most important practical difference for GTA homeowners. Toronto has one of the widest indoor humidity swings of any major Canadian city — furnace-heated interiors in winter drop indoor relative humidity to 20-30%, while summer humidity can push indoor levels to 55-65% or higher. Solid hardwood expands and contracts significantly in response to these seasonal swings.
This movement is manageable in a properly installed floor — expansion gaps, appropriate fastening, and acclimatization before installation are all part of the process. But it does mean solid hardwood is not appropriate over concrete subfloors (which trap and release moisture differently than wood subfloors), in basements, or in spaces with significant humidity variation like mudrooms or bathrooms.
Engineered hardwood’s cross-laminated construction resists this movement. The alternating grain direction of the plywood layers counteracts the natural tendency of wood to expand across the grain. This makes engineered hardwood appropriate for any room over concrete, for spaces with radiant floor heating, and for installations over basements or crawl spaces where moisture migration is a concern.
One important clarification: engineered hardwood is moisture-resistant, not waterproof. It handles humidity and minor moisture better than solid hardwood, but a standing water event will still damage it. For basements, proper moisture testing and a vapor barrier are required before any hardwood installation.
Cost Comparison in the GTA
The price overlap between solid and engineered hardwood is significant. A budget-tier engineered product can cost less than a mid-grade solid hardwood, and a premium engineered product from a quality manufacturer can cost more than a standard solid hardwood installation. Species, plank width, wear layer thickness, and finish all affect the final number.
| Factor | Solid Hardwood | Engineered Hardwood |
|---|---|---|
| Cost (installed, GTA) | $5–$9/sqft | $4–$8/sqft |
| Refinishing potential | 8–10 times | 1–3 times (wear layer dependent) |
| Moisture resistance | Lower | Higher |
| Over concrete subfloor | No | Yes |
| Over radiant heating | Risky | Yes |
| Basement installation | No | Above-grade only, with moisture test |
| Typical lifespan | 75–100+ years | 25–50 years (longer with thick wear layer) |
Best Rooms for Each Type
Solid hardwood works best in: main floor living areas, dining rooms, bedrooms, and hallways in homes with plywood or OSB subfloors. If you want a floor that can be refinished multiple times and has the maximum long-term lifespan, solid hardwood in a house (not a condo) with a wood subfloor is still the right choice. See our hardwood flooring installation service for what’s involved.
Engineered hardwood works best in: condos, any space over concrete, basements (above-grade, with moisture testing), kitchens, rooms with radiant floor heating, and homes where you want the look of hardwood without the installation constraints. If your home has concrete subfloors anywhere — which most Toronto condos and many post-war houses do in certain areas — engineered is your only hardwood option. See our engineered hardwood installation page for details.
Which Is Better for Toronto Condos?
Engineered hardwood, definitively. This isn’t a preference question — it’s a structural one. Most Toronto condo towers have concrete subfloors throughout. Solid hardwood requires a wood subfloor for nail-down installation. The only way to install solid hardwood over concrete is a glue-down technique, which is uncommon and comes with its own complications. Engineered hardwood can be glued directly to a clean, level concrete slab or floated using a click-lock system with an acoustic underlayment.
Toronto condo boards also have specific requirements around sound transmission between units. Engineered hardwood systems paired with the appropriate IIC-rated (Impact Insulation Class) underlayment can meet or exceed the minimum STC 50 / IIC 50 ratings required by most condo buildings. We routinely confirm compliance with building management before installation.
The logistics for condo installations also differ from houses — elevator booking, damage deposit documentation, noise-restricted installation hours, and sometimes permit applications from the building management office. We handle all of that as part of the job. If you’re planning a condo flooring project, see our Toronto flooring installation guide for what to expect.
Common Questions
Yes. Engineered hardwood has a genuine solid wood veneer on top — the surface you see, touch, and walk on is real wood. The difference is what's underneath: engineered uses cross-laminated plywood or HDF layers for stability, while solid hardwood is a single piece of wood all the way through.
Technically yes, but it requires careful matching — species, stain colour, sheen level, and plank width all need to align. If you're doing a whole-home renovation, we generally recommend choosing one product throughout for a seamless look and easier colour matching.
Both add comparable resale value. Most buyers can't tell the difference from looking at the floor. What matters more is species (oak and maple outperform exotic species), finish quality, plank width, and overall condition of the floor.
A minimum of 3mm to sand and refinish once. For multiple refinishes, look for 4-6mm. Thinner wear layers (1-2mm) are budget products that cannot be refinished at all — they're a one-and-done installation. We always specify wear layer thickness when recommending products.