How many drywall screws per 4×8 sheet?

Short answer

A 4 × 8 sheet of drywall on a wall with studs 16 in on center takes 28 screws at USG’s 16 in spacing: 7 studs with 4 screws each. Buy about 31 screws per sheet to allow for drops.

How to work it out

  1. Wall: a 4×8 sheet crosses 7 studs at 16 in; 4 screws down each at 16 in = 28 per sheet × 1 = 28
  2. Plus 10% extra = 31 screws
  3. By weight, USG’s table gives 2.7 lb of 1-1/4 in Type W screws per 1,000 sq ft: 32 sq ft → 0.1 lb

Twenty-eight is the number for a 4 × 8 sheet on a wall. Hung horizontally across studs 16 in apart, the sheet lands on 7 studs, and each stud gets 4 screws down the 48 in height at 16 in spacing, the wall spacing in USG’s installation guide.

Adjust for your project

Hung across the joists
Carried over from the drywall calculator if you used it
Use the size you hung; a carried-over sheet count assumes it is the same size
Measured center to center
More options: Wall · Ceiling · Extra (dropped and stripped screws)
USG’s guide: 16 in on walls
USG’s guide: 12 in on ceilings
%
Screws to buy31 screws
Screws per wall sheet
28
Pounds to buy (USG estimate by area)
0.1 lb
Drywall area
32 sq ft
  • Each sheet is counted with its own edge screws, even where it shares a stud with the next sheet; that matches how sheets are actually fastened.
  • Set every screw just below the paper surface without breaking it; a screw that tears the paper holds nothing and needs another next to it.
Check your codeFire-rated assemblies, steel framing, glued walls and some ceiling textures have their own fastener schedules. Follow the board maker’s instructions and any listed assembly or local code that applies.

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Screws per sheet by sheet size

Screws per sheet by sheet size
SheetScrews per wall sheet
4×828
4×1032
4×1240

What to know about screwing off a 4×8 sheet

  • Horizontal or vertical, still 28. Hung vertically, the sheet crosses 4 studs and gets 7 screws down each.
  • Studs 24 in apart: 5 studs × 4 screws = 20 per sheet.
  • Closer spacing. Some installers space wall screws at 12 in in the field for a stiffer wall: 7 × 5 = 35 per sheet.
  • By weight: USG’s 2.7 lb per 1,000 sq ft is about 0.09 lb per sheet. A 1 lb box does about 11 sheets; a 5 lb box about 58.

The edge screws are counted on each sheet even though two sheets meet on one stud: each sheet gets its own row 3/8 in or more in from its edge. If you glue the board to the studs, the board maker’s instructions allow fewer field screws; follow them.

On a ceiling the spacing tightens to 12 in: how many drywall screws per sheet for a ceiling. Bigger sheets: how many drywall screws per 4x12 sheet. For the mud to cover them, how much mud per sheet of drywall.

What you’ll need

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Frequently asked questions

How many drywall screws per 4x8 sheet with studs 24 inches apart?

20 screws per sheet: 5 studs with 4 screws each.

How many drywall screws for 20 sheets of 4x8?

About 616 screws with 10% extra, or 1.9 lb by USG’s weight estimate.

How many drywall screws per 4x8 sheet hung vertically?

28 screws: 4 studs with 7 screws each.

Sources