Drywall types
- Regular board (½ in) for most walls.
- Moisture-resistant board for bathrooms and other damp areas (not a substitute for shower waterproofing).
- Type X fire-rated board (often ⅝ in) where code requires fire-resistance — for example between an attached garage and living space, or in rated assemblies.
- Mold-resistant, sound-damping and lightweight boards for specific needs.
Sheet sizes and how many you need
A 4×8 sheet covers 32 sq ft, 4×10 covers 40 and 4×12 covers 48. Longer sheets mean fewer joints to tape but need more people to hang and may not fit up narrow stairs. Add 10–15% for waste. Our drywall calculator handles walls, ceilings and openings.
Drywall installation finish levels 0–5
| Level | What it includes | Typical use |
|---|---|---|
| 0–1 | No finishing, or tape only | Attics, above ceilings, temporary work |
| 2 | Tape plus one coat | Garages, under tile |
| 3 | Two coats | Heavy texture |
| 4 | Three coats, sanded | Most painted walls with flat or eggshell paint |
| 5 | Level 4 plus a skim coat | Glossy paint, strong side lighting |
Repairs
Nail pops, cracks at joints and small holes are routine repairs. Larger holes need a patch backed by blocking or a California patch. Water-damaged board that is soft or stained should be cut out after fixing the leak and confirming the cavity is dry.
Fire-rated drywall installation and code notes
Where a fire-resistance rating is required, the entire assembly — studs, board type and thickness, fasteners, joint treatment — must match a tested design. In multifamily buildings, including NYC apartment buildings, rated walls and ceilings are governed by the building code; do not substitute materials without your design professional's approval.
Drywall Installation & Repair costs in 2026
Per square foot of board installed; labor is the majority of the cost.
| Item | Typical range |
|---|---|
| Installed, Level 4 finish | $1.60–$3.75 per sq ft; median $2.41 (Q1 2026) |
| National average (May 2026) | $2.26–$2.69 per sq ft |
Typical national ranges. New York City and other high-cost metros often run above them — get several written bids for your project.
Calculators for this project
New York rules and permits
NYC. DOB lists plastering among work that does not require a permit, but the contractor must hold a DCWP Home Improvement Contractor license for residential work, and fire-rated assemblies in multifamily buildings must follow the NYC Building Code. If drywall work is part of a larger alteration with layout changes, permits apply to the overall job.
Frequently asked questions
How much does drywall installation cost?
Drywall typically runs $1.60–$3.75 per sq ft installed for a Level 4 finish, with a Q1 2026 median of $2.41; other estimates report $2.26–$2.69 in May 2026. Try the drywall cost calculator.
How many sheets of drywall do I need for a 12×12 room?
About 17 sheets of 4×8 including the ceiling and 10% waste.
Should I use ½ in or ⅝ in drywall?
½ in is standard on walls; ⅝ in is common on ceilings and required in many fire-rated assemblies.
Can I hang drywall myself?
Hanging is achievable for many DIYers; finishing to a smooth Level 4 takes practice. Many homeowners hang and hire a finisher.
