Easy Paint Calc

How many sheets of drywall for a 12×12 ceiling?

Short answer

A 12 × 12 ft ceiling (144 square feet) takes exactly 3 sheets of 4 × 12 drywall laid side by side across the joists. With 4 × 8 sheets it takes 5.

How to work it out

  1. Ceiling: 12 ft × 12 ft = 144 sq ft
  2. 144 sq ft ÷ 48 sq ft per 4×12 sheet = 3 → 3 sheets

A 12 × 12 ceiling is one of the few cases where the sheet count is exact: three 4 × 12 sheets laid side by side cover it with no cuts except for the light box. With 4 × 8 sheets the layout needs butt joints and some waste.

Adjust for your project

ft
ft
ft
4 × 12 sheets mean fewer joints on long walls and ceilings, but they are heavy: about 60–77 lb for 1/2 in
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sq ft
sq ft
sq ft
A 16 × 7 ft garage door is 112 sq ft; a 6 ft patio door about 40
%
For cut-offs and mistakes. 10–15% is a common planning range
Sheets to buy3 sheets4×12
Drywall area
144 sq ft
You’ll also need (USG estimate)
about 1.4 gal of joint compound, 53 ft of paper tape and 0.4 lb of 1-1/4 in drywall screws
  • Sheets are counted by area plus the waste allowance. Plan the layout too: hang ceilings first, run sheets across the joists or studs, and stagger the end joints.
Check your codeBuilding codes set the type and thickness of drywall in some places. Under the International Residential Code (R302.6), the garage side of a wall between an attached garage and the house needs gypsum board at least 1/2 in thick, and 5/8 in Type X is required on the garage ceiling when there are habitable rooms above it. Local codes amend this; check with your building department before you buy.

For this job · affiliate link
Drywall panel liftHolding 4 × 12 sheets overhead while you drive screws is the hardest part of the job. A rented or bought panel lift does it for you.
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Sheets by sheet size (same room)

Sheets by sheet size (same room)
SheetSheets to buy
4×85 sheets
4×104 sheets
4×123 sheets
54 in × 123 sheets

Laying out a 12×12 ceiling

  • 4 × 12: 3 sheets, no waste. Run them across the joists (perpendicular), each one spanning wall to wall. Long edges meet on the tapered edges, which are the easiest joints to finish.
  • 4 × 8: 5 sheets. 144 ÷ 32 is 4.5, and the half-sheet pieces have to land on joists, so plan five with offcuts; with a 10% allowance the count is still 5.
  • Thickness. USG’s frame-spacing table allows 1/2 in board perpendicular on ceilings with joists up to 24 in apart, but only 16 in if a water-based texture will be sprayed on. 5/8 in board is stiffer and is common on ceilings.
  • Weight overhead. A 1/2 in 4 × 12 sheet is about 77 lb (60 lb lightweight); a 5/8 in Type X about 106 lb. A panel lift is worth renting for three sheets.

Screw spacing on ceilings is tighter than on walls: USG’s guide spaces screws 12 in apart on ceilings and 16 in on walls. See how many drywall screws per sheet for a ceiling.

The whole room, walls included, is how many sheets of drywall for a 12x12 room. Painting the finished ceiling: how much paint for a 12x12 ceiling.

Different size? Use the full Drywall Calculator (Sheets for a Room).

What you’ll need

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Frequently asked questions

How many 4x8 sheets of drywall for a 12x12 ceiling?

5 sheets of 4 × 8, with 10% for cutting.

How many sheets of drywall for a 12x14 ceiling?

3 sheets of 4 × 14 laid across the joists.

Other common sizes

Sources