Calculate exactly how many sheets of drywall you need — plus joint compound, tape, screws, and corner bead. Supports all sheet sizes with door and window deductions and full cost breakdown.
Drywall (also called sheetrock, gypsum board, or plasterboard) is the universal wall and ceiling finishing material in modern construction. Whether you're finishing a basement, renovating a room, or building new, accurate material estimation prevents costly extra trips to the store and ensures you have everything needed to complete the job efficiently.
| Type | Thickness | Cost/Sheet | Use |
|---|---|---|---|
| Standard (White) | 1/2" | $10–$15 | Most walls & ceilings |
| Type X (Fire-rated) | 5/8" | $12–$16 | Garage, furnace room, code req. |
| Moisture-Resistant (Green) | 1/2" | $14–$18 | Bathrooms, kitchens (not shower) |
| Mold-Resistant (Purple) | 1/2" | $15–$20 | High humidity, basements |
| Lightweight | 1/2" | $12–$15 | Easier to handle, same strength |
| Soundproof (QuietRock) | 5/8" | $40–$55 | Home theaters, shared walls |
Joint compound (mud) comes in pre-mixed all-purpose (easiest for DIY), lightweight (easier sanding), and setting-type (fastest drying, hardest to work). A 4.5-gallon bucket covers approximately 850 sq ft for all three taping/finishing coats. Paper tape is standard and strongest for corners and flats. Mesh tape is self-adhesive and easier for beginners but not suitable for inside corners. Budget one 250-ft roll per 250 sq ft of drywall.
Start with ceilings, then walls. Hang sheets horizontally on walls — this creates fewer joints and places the tapered edges together for easier finishing. Always stagger joints (don't align them with the sheet below). Mark stud locations on the ceiling and floor before hanging. For ceilings, rent a drywall lift ($30–$50/day) — it's nearly impossible solo and a great investment even for one room.