Installing new flooring directly over old hardwood is possible in many GTA homes — but whether it actually works depends on the condition of the existing floor, the height clearance under doors and transitions, and the type of new product you choose. At Top Floorings Depot (3781 Victoria Park Ave, Toronto), we help homeowners in Scarborough, North York, Markham, Vaughan, and Etobicoke figure out whether overlaying is the right call, or whether removing the old floor is the smarter move before anything goes down.
Can You Install New Flooring Over Existing Hardwood?
Yes — in the right conditions, installing new flooring over existing hardwood is a legitimate shortcut that saves labour, time, and the cost of floor removal. The key conditions are: the existing floor must be structurally sound with no soft spots, bounce, or active moisture underneath; it must be flat within ¼" over 10 feet; and the added height must not create problems at door bottoms, HVAC vents, or room-to-room transitions.
The best products for overlaying hardwood are click-lock floating floors — SPC vinyl plank, laminate, and floating engineered hardwood. These install without nails or adhesive and rest on top of the existing surface. Solid hardwood and glue-down engineered hardwood are not suitable for this application — both require a direct connection to a clean, prepared subfloor.
When Installing Over Old Hardwood Makes Sense
Overlaying makes the most practical sense when the existing hardwood is structurally intact but cosmetically past its prime — cupped slightly, deeply scratched, or with a finish that's failed in multiple spots. Sanding and refinishing a floor that's already been refinished two or three times may not be possible without going through the wear layer, especially on the thinner ⅝" strip hardwood common in 1960s–1980s Toronto bungalows. Covering it with a new floating floor is often the better investment.
It also makes sense when the renovation timeline is short. Removing hardwood adds a full day or more of labour, generates significant debris, and can expose subfloor problems — loose plywood, rotted OSB, moisture staining — that weren't visible before. In many Scarborough and North York homes where the original 2¼" strip hardwood was nailed over solid plywood, that floor is still a perfectly stable base for a new floating product.
Height is often the deciding factor. A 6mm SPC vinyl product adds roughly ¼" to the finished floor height. A ¾" floating engineered hardwood adds closer to ¾". If your door clearances are 1" or more above the existing floor surface, you have room to work with. If they're already tight, you'll need to either trim the door bottoms or choose a thinner product.
When You Should Remove the Old Hardwood First
Removal is the right call in four clear situations. First: if the existing hardwood has significant cupping, crowning, or height variation greater than ¼" over 10 feet. No click-lock floating floor will perform reliably over an uneven base — the locking joints will flex, creak, and eventually fail at the seams. Second: if there's been any water damage, active moisture, or a history of leaks below or adjacent to the floor. Covering a wet or moisture-prone floor traps humidity underneath the new product and creates conditions for mould and structural decay. Third: if the existing floor is already a second or third layer. Ontario Building Code limits floor assembly thickness, and stacking layers also causes height problems at every threshold and transition in the house. Fourth: if you're installing solid hardwood or glue-down engineered hardwood — both require a direct, flat, solid subfloor connection that a floating old-hardwood layer can't provide.
In older Toronto homes with original strip hardwood that has come loose, is actively squeaking across large sections, or has significant board-to-board height variation, the cost of removal is usually worth it. You'll also want a clean subfloor before installing any new flooring in kitchens, laundry rooms, or bathrooms where water exposure is ongoing.
How Much Height Will You Add to the Floor?
This is the most frequently overlooked part of overlaying existing hardwood, and it causes real problems if you don't plan for it before buying materials.
- 6mm SPC vinyl: adds approximately ¼" to the finished floor height
- 8–10mm SPC vinyl: adds approximately ⅜"–½"
- 12mm laminate: adds approximately ½"
- 18mm floating engineered hardwood (¾" total): adds approximately ¾"
Measure door clearances before committing to a product. Interior doors in older Toronto homes — especially 1950s–1970s builds — often have ¾" to 1" of clearance, which means adding ¾" of engineered hardwood will require trimming every door in the room. For kitchen appliances with fixed clearances (built-in dishwashers, slide-in ranges, undercabinet drawers), thinner SPC vinyl is the safer call — it adds minimal height and avoids the need to modify cabinetry.
Also check where this room transitions to adjacent spaces. If you're overlaying the living room but not the hallway, the resulting height difference requires a reducer strip at the transition. Top Floorings Depot carries standard reducer and threshold profiles that work with most click-lock floating floor systems.
Our Top Picks at Top Floorings Depot
For installing over old hardwood, these three products offer the right combination of stability, thickness options, and visual upgrade over an existing strip floor.
European Oak Hazelnut 7½" 3mm Engineered Hardwood
Spec: 190mm (7½") wide, ¾" total thickness, 3mm European Oak wear layer, wire-brushed character grade, 19.42 sqft/box
Price: $3.99/sqft
Why it works: The 7½" wide plank reads as a significant visual upgrade over older 2¼"–3¼" strip hardwood, so the renovation looks intentional rather than cosmetic. This floats over the existing floor with click-lock installation — no adhesive, no nails. The warm hazelnut tone works naturally in older GTA homes that tend toward honey oak and medium-brown palettes. The 3mm wear layer gives real refinishing potential down the road.
Riche Anthracite Oak 10mm SPC Vinyl
Spec: 10mm total thickness (8mm rigid SPC core + 2mm EVA attached pad), 5.9" plank, 100% waterproof, Valinge 5G locking
Price: contact us for current pricing
Why it works: If the room has any history of moisture — and many older Toronto basements and main floors do — SPC vinyl is the safer overlay choice. The 10mm thickness means you won't feel individual old floorboards telegraphing through underfoot. Anthracite Oak's deep charcoal-grey tone makes a bold design update over older lighter-toned hardwood floors, and the 100% waterproof core eliminates any risk from minor humidity under the new floor.
Riche Dark Tobacco 12mm EIR Laminate
Spec: 12mm thick, Embossed-in-Register (EIR) surface texture, Valinge 2G click-lock, AC3 residential grade
Price: $1.39/sqft
Why it works: At $1.39/sqft, this is one of the most cost-effective options for overlaying existing hardwood when budget is the primary constraint. EIR texture gives it a realistic grain feel that reads much better than older smooth-surface laminate. The 12mm thickness provides solid, stable underfoot performance when floating over old boards, and the dark tobacco stain suits the traditional interiors common in Etobicoke and East York homes.
What Mistakes Should Toronto Homeowners Avoid When Overlaying Hardwood?
The most common mistake is skipping the flatness check. People assume old hardwood is flat, but Toronto's humidity cycle — hot humid summers followed by extremely dry winters — causes boards to cup, crown, shrink, and shift over decades. Lay a 10-foot straightedge across the floor in multiple directions and look for gaps greater than ¼". If you find any, fill those low spots with floor-levelling compound and let it cure before installing anything on top.
The second common mistake is not accounting for height at transitions. In older Toronto homes where the original floor height was already elevated from a previous overlay, adding a third layer becomes impossible to manage cleanly at door thresholds and room transitions. Always measure clearances before choosing a product.
A third mistake is choosing a product that requires direct adhesion — glue-down vinyl, parquet tiles, or hardwood strips — and trying to float it over old hardwood. Only click-lock products work for this application. Our engineered hardwood collection includes floating click-lock options ideal for overlaying, and our professional installation service covers floating, nail-down, and glue-down methods — the installer will advise which is appropriate for your specific subfloor conditions.
Finally: never skip the expansion gap. Click-lock floors installed over old hardwood still need ¼" to ½" of expansion space at every wall and fixed object. The old hardwood underneath doesn't move much anymore, but the new floating floor above it will expand and contract with seasonal humidity. Skip the gap and you'll see buckling in the first winter or summer season.
Have questions about your specific renovation? Bring photos of your existing floor to our showroom and we'll walk you through it in person. Or tag us on Instagram @topflooringsdepotgta — we love seeing GTA renovation projects.
Visit Top Floorings Depot
Top Floorings Depot
3781 Victoria Park Avenue, Unit 1, Toronto, ON M1W 3K5
www.topfloorings.com
Call 416-499-0117 | Text 416-770-8819
Showroom Hours: Monday–Friday 9–5:30 | Saturday 9–4 | Sunday Closed
We serve homeowners and contractors across Scarborough, North York, Etobicoke, Markham, and Vaughan. Visit our showroom to see and feel these products in person, or contact us for contractor pricing and bulk orders. GTA-wide delivery available.
Follow us on Instagram: @topflooringsdepotgta