1. Clear and protect the room
Move furniture away from the walls where possible, cover anything that stays, and protect floors. Remove wall hangings and loose hardware; label anything you plan to reinstall.
Turn off power before removing switch or outlet plates. Keep paint and tools away from children and pets, and ventilate the room according to the product label.
2. Clean and inspect the surface
Dust corners, trim, and the wall surface, then remove ordinary grime with a suitable mild cleaner. Let the wall dry fully before filling or priming.
Look for peeling paint, loose plaster, nail holes, cracks, water staining, grease, and signs of mould. Fix the source of moisture first; paint alone will not solve a leak or recurring dampness.
3. Repair, sand, and spot-prime
Fill small nail holes and minor dents with a compatible filler, following its drying instructions. Sand repaired spots smooth and remove sanding dust before coating.
Use primer where the surface or repair calls for it, such as exposed drywall compound, stains, or a substantial colour change. For broad damage, textured plaster, or peeling coatings, get advice before proceeding.
4. Mask, then check your work
Mask edges that need protection, remove dust from ledges, and check the wall in good light. Repair any missed defects before applying the finish paint.
Older homes may contain lead-based paint. Do not dry-sand or disturb a coating you suspect contains lead; consult the appropriate provincial guidance or a qualified professional about safe assessment and work practices.
When should you hire a painter?
Consider professional help for extensive peeling, water damage, high ceilings, complex repairs, or work that must fit a tight schedule. A painting estimate should identify the surfaces, preparation, number of coats where known, materials, access, and exclusions.