Drywall and Painting Construction Sequence: Inspections, Insulation, Board, Tape, Prime, Trim, Paint

Drywall, Taping & Painting

The Sequence: Twelve Steps From the Framing Inspection to the Last Touch-Up, What Each One Waits For, and the Three Places the Schedule Gets Pushed and You Pay

Every finishing trade in a house depends on the one before it, and drywall is where it gets expensive to be out of order, because drywall covers things. Board up before the insulation inspection and you open it again. Tape in a cold, wet house and the joints crack in April. Paint before the trim and you paint the trim lines twice. Floors before the painter and the floors get painted. Here is the order I run on my own houses, what each step waits for, and roughly how long, so you can read a builder’s schedule and see where it is lying.

Ontario, a 2,000 sq ft house, two-man crews. The elapsed time is about six to eight weeks from the framing inspection to painted walls, and most of it is drying.

The twelve steps

Step	Waits for	Takes	Notes
1. Framing inspection	Framing complete, windows and exterior doors in, roof on, house dried in	A visit	The inspector checks structure, bearing, headers, fire-blocking. Nothing is covered until this passes.
2. Rough-ins and their inspections	Framing passed	2 to 3 weeks	Plumbing, electrical, HVAC, low-voltage, central vac. Each has an inspection. The HVAC rough-in follows the stamped heat-loss and duct design that went in with the permit (OntarioHeatLoss.ca does those), and the lighting and outlet plan is the last chance to move a box.
3. Walk-through and photographs	Rough-ins passed	Half a day	Photograph every wall with a tape held to the floor, so you can find a pipe in ten years. Check crowned studs, missing backing for cabinets and grab bars, nail plates over pipes. The checklist.
4. Insulation and vapour barrier, and the inspection	Step 3	3 to 5 days plus the inspection	Batts or spray foam, poly, acoustic sealant, attic baffles. The inspector wants to see the vapour barrier before board. ICF walls skip the poly. ICF.
5. Heat on, house dried	Insulation passed; furnace commissioned or temporary heat	A few days	Compound needs 10 to 20 degrees and under 60% humidity to cure. A propane heater adds water; use the furnace or electric heat and a dehumidifier.
6. Board delivered and hung	Step 5	Delivery 1 day; hanging 3 to 5 days	Ceilings first, then walls. Boomed in and stocked by room. The garage and basement at the same time if they are in the scope.
7. Taping and sanding	Hanging complete and inspected	7 to 10 days including drying; 2 to 3 more for Level 5	Three coats, each dry. This is the step builders squeeze, and the one that shows if they do.
8. Raking-light inspection, taper fixes	Sanding done	A day	Before primer, in writing. The checklist.
9. Primer, second inspection	Step 8 signed off	2 days	Sprayed or rolled, full coat. Ceilings can get their finish coats now too, before trim.
10. Trim, doors, cabinets, tile	Primed walls	2 to 3 weeks	Casing, baseboard, doors hung, kitchen installed, tile set. The trim carpenter works against a primed wall, and his nail holes get filled by the painter.
11. Finish paint: trim first, then walls	Trim and cabinets in; floors in or protected	7 to 10 days	Trim enamel, then wall colour cut to the trim. Hardwood is usually in and covered before this; carpet and vinyl after. The order within painting.
12. Finals, then the touch-up	Electrical and plumbing finals, flooring, cleanup	A day	Every trade that comes after the painter leaves a mark. The painter’s last visit is after all of them, with a light. Hold his 10% for it.

The three places the schedule gets pushed

Boarding before the insulation inspection. The builder is behind, the boarders are available Monday, the inspector is booked Wednesday. The board goes up Monday. The inspector asks to see the vapour barrier, and the builder either cuts holes or the inspector takes his word for it, and in the second case so do you, for the life of the house.

Taping in a cold house. The furnace is not in; a salamander runs on propane; the compound skins over and stays soft underneath; the house is at 80% humidity. The joints look fine at the walk-through and crack in the first dry week of winter. Heat on, humidity down, three dry days a coat.

Finish paint before the trim and the floors. The painter is here, the trim carpenter is not, so the walls get painted and the trim goes on later and the painter comes back to do the trim and touch every wall. Or the hardwood goes in after the finish coat and the flooring crew’s dollies do what dollies do. Trim and floors in, protected, then finish paint, then finals, then touch-up.

The humidity rule for the whole sequence: 30 to 50% in the house from the day the heat goes on. Drywall, taping, trim, hardwood and paint all want the same thing, and the house that gets it is the house with no cracks and no gaps in April.

Questions people ask

When does drywall go up in a new house?

After the framing, rough-in, insulation and vapour barrier inspections have all passed and the heat is on. On a typical Ontario build that is about 4 to 6 weeks after the roof is on.

How long does drywall and painting take in a new house?

About six to eight weeks from the framing inspection to painted walls for a 2,000 sq ft house: a week to hang, a week and a half to tape and dry, primer, two to three weeks of trim and cabinets, then a week and a half of finish painting. Most of it is other trades and drying.

Should you paint before or after installing trim?

Prime before trim, finish paint after. The trim carpenter works on primed walls; the painter then fills, caulks and paints the trim and cuts the wall colour to it in one pass.

Should floors go in before painting?

Hardwood and tile usually before the finish coats, covered; carpet and vinyl after. Either way the painter comes back for touch-ups after every other trade has finished.

Budget the whole sequence

The complete interior finishing calculator prices steps 6 through 11 for your rooms. The stage checklists cover the inspections before them.

Price the whole interior All the new-home guides

Sources and further reading

Ontario’s Building Code: the official page with the current regulation. Fire separations and garage walls are in Part 9; interior finish flame spread is 9.10.17.
Keeping the Heat In: Natural Resources Canada. The air barrier at the drywall, poly, and why the vapour barrier matters more than the paint.
Gypsum Association construction standards: GA-216 application and finishing (the hanger’s bible: fastener spacing, ceiling framing limits, joint treatment) and GA-600 fire resistance design manual, with the free downloads.

The Construction Sequence for Drywall and Painting: Inspections, Insulation, Board, Tape, Prime, Trim, Paint, Floors, Finals, in the Order That Does Not Cost You a Wall