Can I install tile over existing vinyl flooring in a Vancouver bathroom renovation?

While it is technically possible to tile over existing vinyl flooring in some situations, it is generally not recommended for Metro Vancouver bathrooms — and in most cases, removing the vinyl and installing proper cement backer board substrate will produce a far more durable and reliable result. The risks of tiling over vinyl are amplified by Vancouver's humid marine climate, where moisture management is the single most important factor in bathroom longevity.

The core problem with tiling over vinyl is adhesion and stability. Vinyl flooring is designed to be flexible and slightly cushioned, while tile requires a rigid, dimensionally stable substrate. Thin-set mortar bonds to cement, concrete, and cement backer board reliably because these substrates are porous and rigid. Vinyl is neither. Even if the thin-set initially adheres to the vinyl surface, the different expansion rates between the vinyl and tile — especially in a Metro Vancouver bathroom where temperature and humidity fluctuate with every shower — create stress at the bond line that leads to tile popping loose over time.

There is one scenario where tiling over vinyl can work: if the vinyl is a single, fully-adhered sheet (not tiles, not floating LVT, not cushioned vinyl) that is completely bonded to a plywood or concrete subfloor with no loose areas, bubbles, or peeling edges. In this case, you can rough up the vinyl surface with 60-grit sandpaper, apply a suitable primer, and set tile using modified thin-set mortar formulated for non-porous substrates. However, even in this best-case scenario, you're building a multi-layer floor sandwich that adds height — potentially creating transition issues at doorways and problems with toilet flange height.

Why removal is almost always the better approach in Vancouver:

First, you don't know what's under the vinyl until you remove it. In older Metro Vancouver homes — especially those built in the 1960s through 1980s across Burnaby, Surrey, Richmond, and East Vancouver — water damage to the subfloor beneath bathroom vinyl is extremely common. Vancouver's persistent humidity means any past leak, even a minor one, has likely caused some subfloor degradation. Tiling over vinyl hides this damage and allows it to worsen.

Second, vinyl flooring installed before 1986 may contain asbestos. This is particularly common in 9x9-inch vinyl floor tiles and the black mastic adhesive used to bond sheet vinyl in homes built during the 1950s through early 1980s. Before removing any pre-1990 vinyl flooring in a Metro Vancouver home, have a sample tested by a certified lab. Asbestos testing costs $30 to $75 per sample. If asbestos is confirmed, professional abatement is required — never attempt to remove asbestos-containing flooring yourself. Abatement costs in Metro Vancouver typically run $15 to $30 per square foot.

The recommended approach for a Metro Vancouver bathroom renovation is to remove the existing vinyl, inspect and repair the subfloor as needed, install cement backer board (Durock or HardieBacker at $1 to $2 per square foot for material), apply waterproofing membrane if the area will see water exposure, and then set your tile on a proper substrate. This adds roughly $4 to $8 per square foot in substrate preparation costs compared to tiling directly over vinyl, but it ensures your tile installation lasts 20 to 30 years instead of failing within 5 to 7.

Cost comparison for a 50-square-foot bathroom floor:

• Tiling over vinyl (risky approach): Save approximately $200 to $400 in substrate prep


• Proper removal and backer board installation: $200 to $400 for substrate prep, plus $200 to $500 for vinyl removal and disposal


• The total cost difference is roughly $400 to $900 — a small fraction of a bathroom renovation budget of $8,000 to $30,000

Spending $400 to $900 more upfront to do the substrate correctly is far cheaper than tearing out and redoing a failed tile floor in 3 to 5 years, which would cost $3,000 to $6,000 including demolition, disposal, new substrate, and re-tiling.