Drywall is several activities, not one
On a drywall construction schedule, or the master schedule above it, drywall often appears as one bar. On site it is five or six activities with other trades between them. Framing, boarding, taping, sanding and paint prep each have their own predecessors and their own idle time.
A single bar hides that. It also hides where a delay will land. If you want a drywall duration you can trust, break the bar into its parts and ask what each part is waiting for.
What follows is the usual order on a commercial interior. Inspection requirements differ by municipality and by project, so treat the sequence as a pattern and confirm the inspection points against your permit conditions.
The usual sequence
Layout comes first, then track and steel stud framing. Framing can start once the floor is clear and the layout is confirmed against the latest drawings. Ceiling track and bulkhead framing often go in at the same time.
Mechanical, electrical, plumbing, sprinkler and low voltage rough-in follow. This is the longest wait in the sequence for the drywall crew, and the one with the most trades working in the same cavities.
Inspections come next. Which ones are required before boarding depends on the jurisdiction and the permit. Typical items are rough-in inspections, a sprinkler test, and firestopping at rated assemblies before it is covered. Insulation goes in before the board closes the wall, and some authorities want it seen first.
Boarding follows the inspections. Taping and finishing come after boarding, in coats, with drying time between them. Sanding, dust control and paint prep close the scope. Painters then take the walls.
| Activity | Waits for | Releases |
|---|---|---|
| Framing | Clear floor, confirmed layout | Rough-in trades |
| Rough-in | Framing, backing in place | Inspections |
| Inspections and insulation | Rough-in complete and firestopped | Boarding |
| Boarding | Approvals, insulation, a dry building | Taping |
| Taping and finishing | Boarding, stable temperature | Sanding |
| Sanding and prep | Dry compound, dust control | Paint |
The handoffs that cause most delays
A few points account for most drywall slippage. None of them is a drywall problem on its own. They are gaps between trades.
- Rough-in not finished or not signed off. Boarding cannot start on a wall that still has open work in it. One missing device box can hold a whole corridor.
- Firestopping not done before the board closes. Penetrations at rated walls have to be sealed and, where required, inspected before they are covered. See whose scope firestopping is.
- Backing missing. Blocking for millwork, grab bars and equipment has to be in before the board goes on. Adding it afterwards means cutting boarded walls open.
- Heat and a dry building. Joint compound needs a stable temperature, and manufacturers set a minimum that has to hold through finishing and drying. Without heat, taping stops.
- Late changes after boarding. A relocated door or a new opening after the board is up costs more than the same change at framing.
Taping time is real time
Joint compound is applied in coats and each coat has to dry before the next. Drying depends on temperature and humidity, so the time between coats is not fixed. Cold or damp conditions can stretch it well past a day.
That time cannot be compressed by adding crew. It can be planned for. Carry the drying time in the schedule, keep the heat on, and avoid scheduling wet trades over finished joints.
Finish level also changes the duration. A higher level adds work and drying. Our guide to Level 4 and Level 5 finishes covers what each level involves, so the schedule can carry the right one for each room.
Sanding makes dust. If other trades are working nearby or the building is occupied, the dust control plan has to be settled before sanding starts, not during it.
Planning the handoffs
Three habits remove most of the delay. First, walk each area before boarding with the rough-in trades and record what is open. Second, agree who owns backing, firestopping and heat before the work starts. Third, release work to drywall by area, not all at once, so crews can move while others finish.
Put the order in writing at the start. A one page sequence that names the predecessor for each activity and the person who confirms it done is enough. When a handoff slips, everyone can see which one and who is waiting.
Phasing helps in large floors and occupied buildings. Frame one zone, board the one ahead of it, and tape behind. It keeps the crew working and lets inspections happen zone by zone.
We self perform framing, boarding, taping and finishing, which removes the handoffs between those steps. The handoffs with other trades remain, and a clear sequence with the GC is what keeps them short. Send us the schedule with the drawings and we will tell you where we see the pinch points.