How much does it cost to have textured drywall walls skim coated smooth in a Markham home?

Skim coating textured drywall walls to a smooth finish in a Markham home typically costs $3.00–$5.50 per square foot for walls, including surface preparation, skim coating, sanding, and priming. For an average Markham home with 1,500–2,000 square feet of textured wall area, a full skim coat project runs roughly $4,500–$11,000 depending on the severity of the existing texture, the number of coats required, and the finish level.

The cost depends heavily on the type of texture you are dealing with. Light orange peel or knockdown textures are the easiest to skim over — they require two thin coats of compound, light sanding, and a primer coat. These typically fall at the lower end of the range, around $3.00–$4.00 per square foot. Heavy knockdown, skip trowel, or hand-applied textures with deep ridges and valleys require more compound, more coats (often three), and more sanding time. These run $4.00–$5.00 per square foot. Heavily textured or multi-layered walls — common in Markham homes built in the 1980s and 1990s — may need partial scraping before skim coating, pushing costs toward $5.00–$5.50 per square foot.

Many of Markham's residential neighbourhoods — including Unionville, Cornell, Berczy, and the older areas near Main Street — were built during eras when wall texture was standard. Homes from the 1970s through 1990s almost universally have some form of wall or ceiling texture. The good news is that wall textures rarely contain asbestos (unlike ceiling textures such as popcorn or stipple in pre-1990 homes), so skim coating textured walls is generally straightforward from a safety standpoint.

The skim coating process itself involves applying a thin, even layer of topping compound or thinned all-purpose compound across the entire wall surface using a wide trowel (14–16 inches) or a paint roller followed by a knockdown with a knife. The first coat fills the valleys of the texture. After drying (12–24 hours in a heated space, longer in humid conditions), it is lightly sanded and a second coat is applied to smooth out any remaining irregularities. For walls that will receive high-sheen paint or are in rooms with critical natural light, a third coat may be necessary to achieve a true Level 5 smooth finish.

Additional costs to factor in: Furniture moving and floor protection typically add $200–$500 per room. If the textured walls have been painted multiple times, the existing paint may need to be lightly sanded or primed with a bonding primer before the skim coat will adhere properly — this adds $0.50–$1.00 per square foot. In older Markham homes, there may be underlying drywall damage (cracks, soft spots, water stains) beneath the texture that only becomes apparent once skimming begins, so building a 10–15% contingency into your budget is wise.

Here is a quick breakdown for common Markham home sizes. A single room (12×12 with 8-foot ceilings, approximately 350 square feet of wall area) runs $1,050–$1,925. A main floor open concept (roughly 800 square feet of wall area) runs $2,400–$4,400. A full home skim coat (1,500–2,000 square feet of wall) runs $4,500–$11,000.

Skim coating is a skill-intensive process that looks simple but is difficult to do well. Uneven application, trowel marks, and sanding gouges are extremely visible on smooth walls, especially under the natural light that floods many Markham homes. This is a project best left to a professional drywall finisher. If you are planning to skim coat textured walls in your Markham home, Toronto Drywall Installers can match you with local drywall professionals for free estimates through the Toronto Construction Network.