Are window sills and door frames more likely to have lead paint than walls in pre-1970s Vancouver homes?

Yes — window sills, door frames, and all interior trim are significantly more likely to contain high-lead paint than walls in pre-1970s Vancouver homes. This is one of the most important things to understand before doing any scraping, sanding, or prep work on an older home.

The reason comes down to how paint was formulated and used historically. Lead was added to paint primarily as a drying agent, a hardener, and a pigment stabilizer — qualities that made it especially desirable for surfaces that took heavy wear and needed to hold up to repeated contact, moisture, and friction. Trim paint, gloss enamel, and oil-based paints used on windows, doors, baseboards, and casings were routinely formulated with much higher lead concentrations than the flat latex used on walls. Studies of pre-1960s housing stock consistently find lead levels on trim surfaces running 5–10 times higher than on adjacent walls.

Window sills are the highest-risk surface in older Vancouver homes. They experience constant friction from opening and closing, moisture from condensation and rain infiltration, and UV degradation — all of which cause the paint to chalk, crack, and flake. Every time a wood-framed window is opened or closed in a pre-1970s home, it generates fine dust from the friction between painted surfaces. That dust, in a home with lead paint on the sash and sill, is a genuine hazard — particularly for children. Door frames and door stops have the same friction problem. Baseboards, while lower risk than windows, were also typically finished with oil-based gloss enamel and should be treated with caution.

Walls are lower risk but not zero risk. Pre-1940s homes in neighbourhoods like Kitsilano, Dunbar, Mount Pleasant, and Kerrisdale often have many layers of paint on walls, and earlier layers may contain lead even if the most recent coat does not. The risk on walls is lower because flat wall paint historically contained less lead, and intact wall paint that isn't being disturbed poses minimal exposure risk. The danger is in the disturbance — sanding, scraping, or heat-gun stripping any pre-1978 surface creates lead dust or fumes regardless of which surface you're working on.

What to Do Before Any Prep Work

Test before you touch anything. DIY lead test swabs (available at most Metro Vancouver hardware stores for $15–$30 per test) will give you a quick positive or negative result on any surface. For a more thorough assessment — particularly if you're planning a full repaint or renovation — a professional lead inspection runs $200–$500 and gives you a room-by-room picture of where the hazards are concentrated.

If tests come back positive on trim surfaces, you have two practical options. Encapsulation — applying a bonding primer over intact lead paint and painting over it — is often the safest and most cost-effective approach when the existing paint is stable and not peeling. Removal requires WorkSafeBC-compliant safe lead practices: wet sanding methods to suppress dust, HEPA-filtered equipment, full containment of the work area, and proper disposal of lead-contaminated waste. This is not a DIY job.

When to Hire a Professional

Any scraping, sanding, or stripping of trim, windows, or doors in a pre-1978 Vancouver home should be handled by a painting contractor who follows WorkSafeBC safe lead work practices. This is especially critical if children or pregnant women are in the home, or if the paint is visibly deteriorating and generating dust on its own. A professional crew will contain the work area, use appropriate respiratory protection, and dispose of waste correctly — protecting your family and themselves.

If you're planning an exterior repaint on a character home in East Vancouver, Kerrisdale, or the North Shore, make sure lead testing is part of the conversation with any contractor you're considering. Vancouver Paint Contractors can match you with experienced local painting professionals who understand older Metro Vancouver housing stock — get matched for free through the Vancouver Construction Network at vancouverconstructionnetwork.com/directory?trade=painting.