A general contractor called me to a Kanata office fit-up where the finish coat kept “flashing” — shiny bands running down every corridor wall. Two weeks later a property manager walked me down a Nepean condo corridor that had been repainted twice in a year and still looked patchy. Different buildings, same diagnosis: the drywall under the paint was never ready for paint. This post is for property managers, condo boards and general contractors in Ottawa’s west end who keep paying for paint to fix what is actually a drywall finishing problem.
1. Paint can’t fix a finishing problem
Drywall is finished to levels — in the trade, Level 0 through Level 5. Most commercial walls get Level 4: tape, two coats of compound over joints and screws, then sanding. That’s fine in a private office with soft, even light. It is not fine in a corridor with wall-mounted fixtures, or a lobby with a window at one end, because light running along a wall — raking light — exaggerates every ridge and hollow. The seams band, the screw spots ghost, and no number of paint coats hides it. Paint is a film about the thickness of a human hair; it follows the surface, it doesn’t flatten it.
Where the light is unforgiving, the spec should say Level 5 — a thin skim coat over the entire surface, not just the joints. It costs more per square foot at the drywall stage and saves multiples of that in repaints that never satisfy anyone.
What to look at: stand at the bright end of your corridor and sight down the wall at a shallow angle. If you can map every joint, you have a finishing problem, not a paint problem.
2. On new fit-ups, “paint-ready” has to be somebody’s job
On the Kanata job, the drywall sub had finished to a clean Level 4, the painter sprayed without a separate primer where walls had been spot-patched, and the schedule never left room for anyone to walk the walls between the two trades. Everybody did their scope; nobody owned the handoff. That gap is where most new-construction paint failures live.
Two Ottawa-specific traps make it worse. Joint compound dries slowly in our cold, humid shoulder seasons — mud that looks dry at the surface can still be wet underneath, and paint over wet mud means delayed cracking and banding. And the first coat of primer is a reveal coat: it’s the moment every finishing flaw becomes visible. Treat it that way — prime, then inspect, then fix, then finish. Not the reverse.
What to look at: your painting scope and your drywall scope. One of them should name the finishing level, require primer as a separate inspected coat, and say who signs off that walls are paint-ready. If neither does, that conversation is free now and expensive later.
3. In occupied buildings, patches telegraph
The Nepean corridor was a different version of the same failure. Years of unit renovations, door hardware changes and a couple of leak repairs had left dozens of patches — each one mudded, sanded and painted over individually. Every patch had slightly different texture and porosity, so every patch read as a dull or shiny ghost under the corridor lighting. Repainting the whole corridor just gave the ghosts a fresh colour.
The fix on walls like that is honest surface prep: skim-coating the patched areas out wide (sometimes the full wall), re-priming with the right sealer so porosity is uniform, and only then applying finish coats. In an occupied condo that also means dust control, daily clean-up and corridors that stay walkable — I covered that side of the job in my note on painting an occupied condo building.
What to look at: after dark, walk your corridor with the lights on and count the patch ghosts. If you find more than a handful per floor, budget for skim-and-seal, not just “two coats”.
4. What a paint-ready check actually covers
Before I price a repaint over drywall I don’t trust, I walk it with a raking light and a moisture meter. The check is short: are the joints flat under glancing light; are patches skimmed wide and sealed; is the compound actually dry (meter, not fingertip); is there a primer specified for new or repaired board; and where the lighting is brutal — long corridors, lobbies, accent walls beside glazing — is Level 5 in the scope. On repaints I would rather lose a day skim-coating than hand a board a wall that flashes the week the invoice lands. I went deeper on the board-side version of this in why boards end up repainting the same hallway twice.
What to look at: whether your painter inspected the drywall before quoting. A price quoted from square footage alone treats prep as someone else’s problem — and on commercial drywall in Kanata and Nepean, prep is usually the whole problem.
What to do if you’re seeing any of this
If your corridors band under the lights, your patches ghost through fresh paint, or your fit-up’s first coat just revealed every seam — have the drywall assessed before anyone quotes more paint. I do paint-ready assessments and the painting that follows across Ottawa, including Kanata, Nepean, Barrhaven, Stittsville and Orleans. Call 613.325.3011 or email yasir@heims.ca, and our full commercial scope is on the services page.
— Yasir, HEIMS Construction
HEIMS Construction is an Ottawa-based commercial painting contractor specializing in mid-rise and high-rise condominium buildings, multifamily properties, and commercial facilities. We serve Ottawa and surrounding communities including Kanata, Nepean, Barrhaven, Manotick, Orleans, Stittsville, and Westboro. We are members of the Painting and Decorating Contractors of Canada (PDCA) and carry full WSIB and liability coverage on every project.