What this estimate includes
This estimate shows drywall sheets, screws, tape, and joint compound based on room dimensions and selected sheet size.
Before you order
Stud spacing, finish level, openings, ceilings, and local code can change material needs. Use this as a planning estimate and confirm with your drywall supplier or contractor.
Frequently Asked Questions
How many drywall sheets do I need for a 12x12 room?
A 12x12 room with 8 ft ceilings has about 384 sq ft of wall area. With ceiling included, add 144 sq ft = 528 sq ft total. Using 4x8 sheets (32 sq ft each) with 10% waste, you need about 19 sheets.
Should I include the ceiling?
Yes, if you are drywalling the ceiling. Ceiling drywall is the same material but heavier to hang. Include ceiling square footage and plan for extra help or scaffolding during installation.
What size drywall sheet should I use?
4x8 ft sheets are standard and most widely available. 4x10 and 4x12 sheets create fewer seams, which reduces finishing labor. Larger sheets are harder to handle and may not fit in standard vehicles -- confirm delivery is available.
How much waste should I add for drywall?
10% is standard for simple rectangular rooms. For rooms with many angles, arches, or complex layouts, add 15-20%. Cutting around windows, doors, and outlets wastes material that cannot be reused.
How many screws per sheet of drywall?
A rough planning estimate is 32 screws per 4x8 sheet. Actual count depends on stud spacing (16 in or 24 in on center) and local code requirements.
How much joint compound do I need?
A rough estimate is 1 gallon per 100 sq ft of drywall. A 5-gallon bucket covers about 500-700 sq ft. You will typically apply 3 coats: tape coat, fill coat, and finish coat.
Should I hang drywall vertically or horizontally?
Horizontal hanging (perpendicular to studs) is standard for walls -- it creates fewer vertical seams and is stronger. For ceilings, drywall is always hung perpendicular to joists.