Can I put laminate flooring over existing vinyl in my NB home?

Yes, you can install laminate flooring over existing vinyl in most cases, but several conditions must be met for a successful result in a New Brunswick home. The vinyl must be flat, firmly bonded to the subfloor, in good condition, and only a single layer. If those conditions are met, you can save the time and cost of removal — but if the vinyl is failing, loose, or layered, it needs to come out first.

The first and most important check is flatness. Laminate flooring requires a subfloor that is flat to within 3mm over a 1-metre span (roughly 1/8 inch over 3 feet). Vinyl sheet flooring and vinyl tiles that are well-adhered and smooth provide an acceptable surface. However, if the vinyl has bubbles, curling edges, lifted seams, or areas where the adhesive has failed, those imperfections will telegraph through the laminate and cause problems with the click-lock joints. Walk the entire floor in socks — you will feel every bump, depression, and lifted edge. Any defect you can feel will show through.

Before you proceed, you must consider the age of the vinyl. This is especially critical in New Brunswick, where many homes were built or renovated between the 1950s and 1980s. Vinyl flooring and the black adhesive (cutback adhesive) used before 1986 commonly contain asbestos. Never sand, scrape, or aggressively remove old vinyl without testing first. An asbestos test costs just $25 to $50 per sample in NB and gives you peace of mind. If the vinyl tests positive for asbestos, you have two safe options: install directly over it (encapsulating it in place) or hire a licensed abatement professional for removal. Encapsulating by installing laminate over asbestos-containing vinyl is considered safe and is actually the preferred approach in many cases, as it avoids disturbing the fibres entirely.

If the vinyl passes inspection, install a quality foam underlayment with an integrated vapour barrier between the vinyl and the laminate. This is essential in NB for two reasons. First, it provides cushion and sound dampening. Second, the vapour barrier protects the laminate's HDF core from moisture migrating through the vinyl from the subfloor below — a real concern in New Brunswick's Maritime climate, particularly on ground-level floors and in coastal communities like Saint John, Shediac, and Bathurst where ambient humidity is persistently elevated. Budget $0.50 to $1.00 per square foot for underlayment.

There are situations where you should not install over existing vinyl. If there are multiple layers of flooring already in place (vinyl over vinyl, or vinyl over old linoleum), the combined thickness creates too much cushion and instability for a floating laminate floor. If the vinyl is on a concrete slab — common in NB basements — you must perform a moisture test on the concrete before proceeding. Maritime moisture migrates continuously through NB basement slabs, and trapping moisture between the concrete, vinyl, and laminate creates conditions for mould and HDF core swelling. Use a calcium chloride test or relative humidity probe to confirm the slab moisture level is within acceptable limits.

For a standard NB home with a single layer of well-adhered vinyl on a plywood subfloor, installing laminate over the vinyl is a practical, cost-effective approach. You save $1 to $3 per square foot in removal and disposal costs. A typical 800-square-foot installation over existing vinyl runs $3,200 to $6,400 fully installed in New Brunswick. This is a reasonable DIY project for a single room with a straightforward layout, though larger installations benefit from a professional's eye for subfloor assessment and proper expansion gap planning.

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Looking for experienced contractors? The New Brunswick Construction Network connects homeowners with qualified professionals:

• Arctic Fox Construction Inc.
• Thirty Four Renovations
• Gionetterenovations
• 3Tone Construction Ltd
• Modern Epoxy Inc