How do Ottawa professionals handle wallpaper on walls with uneven plaster?

Removing wallpaper from uneven plaster walls requires a careful, methodical approach that protects Ottawa's older home character while creating a paintable surface. Professional painters in Ottawa encounter this situation frequently in homes built before 1950, where horsehair plaster was applied directly over wood lath, creating naturally uneven surfaces that homeowners later covered with wallpaper.

The process begins with testing a small, inconspicuous area to determine the wallpaper type and adhesive strength. Ottawa's older homes often have multiple layers of wallpaper applied over decades, sometimes with wheat paste adhesives that have become rock-hard. Professionals use scoring tools very lightly on uneven plaster — aggressive scoring can gouge soft lime plaster and create repair headaches. Steam removal works well but requires careful moisture control since Ottawa's plaster walls often lack vapor barriers, and excess moisture can cause plaster to lose its bond with the lath substrate.

Once wallpaper is removed, the uneven plaster presents the real challenge. Minor undulations (less than 1/8 inch variation) can be addressed with high-quality primer and two coats of premium paint. More significant irregularities require skim coating with joint compound or plaster of Paris, applied in thin layers and sanded smooth between coats. This is skilled work — rushing the skim coat process shows every flaw under paint, especially with Ottawa's dramatic seasonal lighting changes from low winter sun to bright summer exposure.

Professional painters typically charge $3 to $8 per square foot for wallpaper removal from plaster walls, with skim coating adding another $2 to $4 per square foot. The wide range reflects the condition of both wallpaper and underlying plaster. Heritage homes in neighborhoods like Sandy Hill or New Edinburgh often require extra care to preserve original plaster character while achieving smooth paint-ready surfaces.

The key warning with plaster walls is knowing when to stop. Over-aggressive removal or heavy-handed skim coating can damage plaster that has survived 70 to 100 years. When homeowners need this level of restoration work, browsing experienced contractors through the Ottawa Construction Network directory helps connect with painters who understand the nuances of working with Ottawa's heritage building materials.