Fieldsheet

Job sheets for the materials you actually buy.

Drywall, not just a sheet count

USG already published the shopping list: panels, compound, tape, and screws, per 100 square feet. This page does that arithmetic, subtracts the openings they tell you to subtract, and leaves the skim coat out.

Starts at 0% because USG’s table is net area. Add a cut allowance if the room has a lot of windows and the offcuts will not travel to the next wall.

Job sheet

Fieldsheet drywall job sheet

4×8 ft sheets. All Purpose. Allowance 0%.

  • Net panel area308 sq ftLarge openings removed. USG says not to subtract electrical boxes. Cut allowance is 0%.
  • 4×8 ft sheets10 sheets9.63 before rounding up · 32 sq ft a sheet.
  • All Purpose compound3.08 gal1.0 gal per 100 sq ft (10 gal per 1,000) in USG’s guide and submittal J1969. Not a full skim.
  • Type W screws0.92 lb0.3 lb per 100 sq ft. Buy 1 lb if the box is sold by the whole pound. The guide’s 1,000 sq ft screw row prints 2.7 lb, not 3.0.
  • Paper joint tape114 ft37 ft per 100 sq ft in the USG guide.
  • First Coat primer0.77 galUSG figures First Coat at 400 sq ft/gal.
Fieldsheet drywall job sheet
4×8 ft sheets. All Purpose. Allowance 0%.

Net panel area: 308 sq ft (Large openings removed. USG says not to subtract electrical boxes. Cut allowance is 0%.)
4×8 ft sheets: 10 sheets (9.63 before rounding up · 32 sq ft a sheet.)
All Purpose compound: 3.08 gal (1.0 gal per 100 sq ft (10 gal per 1,000) in USG’s guide and submittal J1969. Not a full skim.)
Type W screws: 0.92 lb (0.3 lb per 100 sq ft. Buy 1 lb if the box is sold by the whole pound. The guide’s 1,000 sq ft screw row prints 2.7 lb, not 3.0.)
Paper joint tape: 114 ft (37 ft per 100 sq ft in the USG guide.)
First Coat primer: 0.77 gal (USG figures First Coat at 400 sq ft/gal.)

What USG actually tells you to count

Measure each wall, length times height, and do the same for the ceiling if you are hanging it. Subtract doorways and picture windows. Skip the boxes. A 4×8 panel is 32 square feet, a 4×10 is 40, a 4×12 is 48. The guide’s own table then scales fasteners, tape, and compound off that square footage.

Per 100 square feet the guide prints 0.6 lb of nails or 0.3 lb of Type W screws, and 37 feet of paper tape. All Purpose compound is 1.0 gallon; Plus 3 is 0.9. At 1,000 square feet those compound lines are 10 gallons and 9 gallons. The screw line at 1,000 square feet prints 2.7 pounds, which is not ten times 0.3. The calculator uses 0.3 per 100, the row tied to the spacing note (12 inches on the ceiling, 16 on the wall), and the sheet says the 1,000-foot row disagrees.

The same 12 by 10 room

Net area matches the paint example: 308 square feet. At 32 square feet a sheet that is 9.63 sheets, so you buy 10 of the 4×8. All Purpose mud is 3.08 gallons. Screws are 0.92 pounds, which is a one-pound box if that is how they are sold. Tape is 114 feet. First Coat primer, at the guide’s 400 square feet per gallon, is 0.77 gallons.

Hang the sheets so the tapered edges meet and the vertical joints are staggered. The guide says to avoid a vertical joint directly above or below a window or door. That is a layout rule, not a change to the count, but it is why a room full of openings eats sheets even when the area math looks tidy. The cut allowance is there for that room. It starts at zero so a plain bedroom is not taxed 10% by habit.

What the mud figure is not

Footnote 3 on the USG table says the compound covers flat joints, inside corners, and outside corners with metal bead, in a typical room, and that the amount varies with the substrate and the tools. A Level 5 skim over the whole face is a different bucket. If that is the finish, do not trust the 3 gallons in the example; the sheet has no skim rate to invent one.

Mistakes

FAQ

How many 4×8 sheets cover this room?

Divide the net square feet by 32 and round up. The example room, 308 square feet after one door and two windows, is 9.63 sheets, so you buy 10. A 4×12 sheet is 48 square feet, which changes the count and the way the sheets land on the studs.

How much mud is that?

USG’s installation guide and the All Purpose submittal both land on about 10 gallons per 1,000 square feet, which is 1 gallon per 100. Plus 3 lightweight is about 0.9 gallons per 100 in the same guide. That mud is for taped joints, corners, and fasteners in a typical room. A full skim is extra, and USG does not give a skim rate on that table.

Screws or nails?

The guide’s per-100-square-foot row is 0.3 pounds of Type W screws or 0.6 pounds of wallboard nails. Screws are the default here because the same guide recommends 1-1/4 inch Type W screws for holding power. The 1,000 square foot screw row prints 2.7 pounds, not 3.0. This sheet uses the per-100 row and says so.

Do I subtract the doorway?

Yes. USG says to subtract large openings such as doorways and picture windows, and not to bother with electrical boxes and pipe. The form follows that split.

Sources

  1. USG Sheetrock Brand Installation and Finishing Guide, J371 — Panel sizes, the instruction to subtract large openings, and the fastener, tape, and compound table. First Coat primer is figured at 400 sq ft/gal in footnote 4.
  2. USG Sheetrock All Purpose Joint Compound submittal, J1969 — Coverage about 10 gallons per 1,000 square feet of gypsum panels. Meets ASTM C475.
  3. KWS Trends, drywall calculator, United States — About 13,000 average US searches a month and a Google Ads figure of 14,800, updated 10 November 2026.