What paint is best for covering cigarette smoke stains and odour on walls in a New Brunswick home?

Covering cigarette smoke damage requires a shellac-based stain-blocking primer — standard latex primer will not hold nicotine stains back, and the smell will bleed through regular paint no matter how many coats you apply.

Nicotine and tobacco tar are oil-soluble, and they penetrate deeply into drywall paper, plaster, and wood trim over years of smoking. If you try to paint over smoke-stained walls with a conventional latex primer or even a latex stain-blocking primer, the nicotine migrates through the water in the primer coating, re-dissolves, and bleeds right through your topcoat as yellow-brown streaks. Sometimes this happens immediately, sometimes it takes a few weeks as the wall warms up in summer — but it always happens.

The product you need is Zinsser BIN shellac-based primer, or a similar shellac-based blocking product. Shellac is alcohol-based, and nicotine does not dissolve in alcohol — the shellac physically seals the stain molecules behind a hard film before they can migrate. Zinsser BIN is available in NB at most paint and hardware stores, typically 5-65/gallon. Apply one full coat over all affected surfaces, let it dry (shellac dries fast — usually 45 minutes to 1 hour), and then apply your finish paint in whatever colour you've chosen. Two coats of finish paint over BIN primer will give you a clean, bright result.

For odour, the shellac primer is your best tool — sealing the walls and ceiling with BIN dramatically reduces the musty tobacco smell by encapsulating the volatile compounds in the wall surfaces. That said, odour also lives in carpets, soft furnishings, HVAC ducting, and even the gaps around electrical outlets. If you've painted with BIN and there's still smell, the source is likely the flooring, the ceiling tiles, or the ventilation system rather than the walls.

In heavier smoking situations — a home where someone smoked indoors for decades — the ceiling often carries the worst staining because smoke rises and settles. Don't just prime the walls; prime the ceiling too, including the inside of closets where clothes absorbed smoke. Wash all surfaces with a TSP (trisodium phosphate) solution or a heavy-duty degreaser before priming — this removes the surface layer of tar and gives the primer a cleaner surface to bond to.

Ventilation during and after application is critical. Shellac-based primer has a strong alcohol smell during application, distinct from the tobacco odour underneath. Open windows, run fans, and use a proper organic vapour respirator — not just a dust mask — while applying it. The smell dissipates quickly once dry, typically within a few hours.

This is a project most NB homeowners can handle as a DIY job, but in a heavily smoked home with floor-to-ceiling contamination, the volume of product needed and the thoroughness required — every surface, every closet, the ceiling — makes professional help worth considering. A painter experienced with smoke remediation will work efficiently and ensure no surface is missed.

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