How to Install Drywall: The Complete Guide (Hang, Tape, Mud, Paint)

How to Install Drywall: The Whole Job in 8 Steps

Every drywall installation follows the same order, whether it is one wall in a basement or every room in a house:

1. Measure and order: work out how many sheets you need and which board goes in each room.
2. Prepare the framing: check that studs and joists are straight, add backing where sheets will end, and mark stud lines on the floor and ceiling.
3. Hang the ceilings first, so the wall sheets hold up the ceiling edges.
4. Hang the walls, top row first, sheets running sideways across the studs.
5. Tape the joints and corners, and put corner bead on outside corners.
6. Apply three thin coats of joint compound, each one wider, letting each coat dry.
7. Sand lightly and check the walls with a light held flat to the surface.
8. Prime, then paint two coats.

Steps 1 to 4 go fast. Steps 5 to 8 decide how the wall looks, and they take most of the time because of drying between coats.

Drywall Tools and Materials

Tools

• Tape measure, a 4-foot drywall T-square and a pencil
• Utility knife with fresh blades, plus a jab saw or a rotary cutting tool for outlets
• Screw gun or drill with a drywall dimpler bit (it stops the screw at the right depth)
• Drywall lift for ceilings (you can rent one) and a few sawhorses
• Taping knives: 6-inch, 10-inch and 12-inch, a mud pan and a corner tool if you like
• Sanding sponge or pole sander, a dust mask and eye protection
• A bright work light for checking the finish

Materials

• Drywall sheets (see the next two sections for how many and which kind)
• Drywall screws: coarse-thread for wood framing, fine-thread for metal studs
• Paper joint tape (and mesh tape if you use setting compound)
• Joint compound: setting-type for filling, premixed all-purpose for taping and coats, lightweight or topping for the last coat
• Metal or paper-faced corner bead for outside corners
• Drywall primer and wall paint

How Many Sheets of Drywall Do You Need?

Measure each wall: width × height = square feet. Add the ceiling (length × width). Then divide by the area of one sheet:

• 4 × 8 sheets cover 32 square feet each: divide by 32
• 4 × 12 sheets cover 48 square feet each: divide by 48

Round up, then add about 10 percent for cuts and mistakes.

Example: a wall 14 feet wide and 8 feet tall is 112 square feet. 112 ÷ 32 = 3.5, so 4 sheets of 4 × 8, or 112 ÷ 48 = 2.3, so 3 sheets of 4 × 12. Add the 10 percent across the whole room, not wall by wall.

Don't subtract doors and small windows unless they are large: you lose most of that board to cut-offs anyway. Longer sheets (10 and 12 feet) mean fewer end joints to finish, but they are heavier and harder to get down stairs, so check the route into the room first.

Which Drywall to Use: Thickness and Types by Room

• Walls: standard ½-inch drywall is the usual choice in most rooms.
• Ceilings: use sag-resistant ½-inch ceiling board or ⅝-inch drywall. Regular ½-inch board can sag between joists over time, especially with wider joist spacing.
• Bathrooms and laundry rooms: moisture- and mold-resistant board on the walls and ceiling.
• Inside a shower or behind tile in wet areas: cement board or another tile backer made for wet areas, not drywall.
• Fire-rated (Type X): usually ⅝-inch, required in some places, such as a garage wall or ceiling next to living space. Rules vary, so follow your local building code.
• High-traffic walls: abuse-resistant or impact-resistant board holds up better in hallways, stairways and playrooms.

If you are not sure what your local code asks for, your building department or a licensed contractor can tell you before you buy.

How to Hang Drywall on a Ceiling

Always hang the ceiling before the walls. The wall sheets then tuck up under the ceiling edge and help support it.

1. Run the sheets across the joists, not along them, starting in a corner.
2. Use a drywall lift. Holding a full sheet overhead while you drive screws is how ceilings end up cracked, crooked or dropped. A rented lift raises and holds the sheet for you, and it is worth it.
3. Fasten about every 12 inches along each joist, screws at least ⅜ inch in from the edges.
4. Stagger the end joints from row to row, and make every end land on a joist.

How to Hang Drywall on Walls

Hanging drywall horizontally (sideways, across the studs) is the most common method on walls up to about 8 or 9 feet tall. It leaves one long joint at a comfortable working height instead of several floor-to-ceiling joints.

1. Top row first. Push the sheet up tight against the ceiling, then fasten it.
2. Bottom row next, with the long tapered edges of the two rows meeting in the middle. A drywall lifter or a pry bar under the sheet helps lift it into place.
3. Stagger the end joints. Don't let the joints of the top and bottom rows line up, and make sure every end lands on a stud.
4. Leave a small gap at the floor, about ½ inch. The baseboard covers it, and it keeps the board from wicking moisture from the floor.
5. Avoid joints at the corners of doors and windows. Cut the sheet around the opening instead, because joints that line up with those corners tend to crack.

How to cut drywall: score, snap, cut the back

Mark your line, hold the T-square, and score through the paper face with a utility knife. Snap the sheet away from the cut so it breaks along the line, then cut the back paper. Smooth a rough edge with a rasp.

Outlets and switches

Measure from the edge of the last sheet and from the floor to the outlet box, mark it on the sheet, and cut the opening before the sheet goes up. Many pros also use a rotary tool after hanging, running it around the box from inside. Either way, keep openings snug so the cover plates hide the edges.

Drywall Screw Spacing, Length and Depth

• Spacing: about every 16 inches on walls and every 12 inches on ceilings, along each stud or joist. Check the board maker's instructions and your local code, which may ask for closer spacing.
• Edges: keep screws at least ⅜ inch in from the edges of the sheet.
• Length: 1¼-inch screws are typical for ½-inch drywall on wood framing. Use 1⅝-inch screws for ⅝-inch board, or when fastening through thicker layers.
• Depth: set each screw just below the surface so it leaves a small dimple for mud to fill. Don't tear the paper. A screw driven through the face paper doesn't hold. If you tear it, drive a new screw about 2 inches away.

A dimpler bit on a drill or a screw gun with a depth setting makes the right depth easy, every time.

How to Tape and Mud Drywall (3 Thin Coats)

This is the part that makes or breaks the job. The secret is three thin coats, each one wider, not one thick coat. Thick coats crack, shrink and leave lumps that take hours to sand.

Coat 1: tape

Spread a band of joint compound over the joint, press paper tape into the mud, and squeeze it flat with a 6-inch knife so there are no air bubbles under it. Cover every screw head with a swipe of mud.

• Inside corners: fold the paper tape along its center crease and press it into the corner. A corner tool makes both sides smooth at once.
• Outside corners: fasten metal or paper-faced corner bead, then mud over it.

Coat 2: fill

Once the first coat is dry, use a 10-inch knife to apply a wider coat, feathering the edges out thin.

Coat 3: finish

Use a 12-inch knife for a final, very thin, wide coat. Feather the edges so the joint blends into the flat board.

Which mud, and how long between coats?

• Premixed all-purpose compound dries by air. Plan on about a day per coat, longer when it is humid or cold.
• Setting-type compound ("hot mud") hardens by chemical reaction in the time printed on the bag. It is great for filling gaps and fast first coats, and it is harder to sand.
• Lightweight or topping compound is easier to sand, which makes it a good last coat.

Sanding Drywall and the Light Trick

Sand lightly with a fine sanding sponge or a pole sander (about 120 to 150 grit). You are only knocking down ridges and edges. Sanding into the paper face makes it fuzzy and it will show through paint. Wear a dust mask, and close off the room to keep the fine dust in.

The light trick pros use: turn off the room lights and hold a bright work light flat against the wall, so the beam skims across the surface. Every ridge, edge and pinhole casts a shadow you would never see in normal light. Circle them with a pencil, then fix them with a skim of mud now, not after the paint.

How to Prime and Paint New Drywall

Never paint straight over mud. Joint compound and the paper face soak up paint differently, so the taped seams show through as dull or shiny stripes (called flashing).

1. Prime everything with a drywall primer (often a PVA primer) so the whole wall absorbs paint evenly.
2. Match the texture if the rest of the room has one, such as orange peel or knockdown, before painting.
3. Paint two coats, and paint the whole wall from corner to corner so the sheen is even.

For a full room, the house painting guide covers paint types and sheens.

Drywall Finish Levels 0 to 5, Explained

Pros describe how finished a wall is with levels. Knowing them helps you ask for exactly what you want:

• Level 0: hung only, no tape or mud (temporary walls).
• Level 1: tape set in mud, nothing more (attics and areas out of sight).
• Level 2: tape plus one coat (garages, and walls that will be tiled).
• Level 3: two coats (walls that get a heavy texture).
• Level 4: three coats, the usual finish for painted walls in most homes.
• Level 5: level 4 plus a thin skim coat over the whole surface, for walls with strong side light, or with glossy or dark paint.

One Wall or a Whole House: Planning the Job

The steps are the same at any size. What changes is the planning.

• One wall: about a weekend to hang and tape, plus the drying time between coats. Spread it over several days, and expect at least three short visits for mud.
• A whole room or basement: about a week, mostly waiting for coats to dry.
• A whole house: work in waves. Hang every room, then tape every room, then put each coat on everywhere, then sand, prime and paint. A crew often finishes in about one to two weeks, depending on size and drying conditions.

For bigger jobs, plan the sheet layout to use the longest sheets and the fewest joints. Arrange delivery so the board stays flat and dry, and check whether an inspection is required before the walls are closed.

How to Repair Drywall: Holes, Nail Pops and Cracks

Repairs use the same skills as a new installation, just smaller:

• Nail pops: drive a drywall screw about 1½ inches from the popped nail, set the nail, then spackle.
• Holes up to about 4 inches: a self-adhesive mesh patch or a cut-to-fit drywall patch, then thin coats of mud.
• Bigger holes: cut a clean square back to solid board, add wood backing behind the edges, screw in a new piece, then tape and mud.
• Every repair: finish with the same three thin coats, sand, prime and paint.

Cracks, water damage and texture matching each have their own fixes, all covered in the drywall repair guide.

10 Drywall Mistakes to Avoid

1. Hanging the walls before the ceiling.
2. Lining up end joints instead of staggering them.
3. Ending a sheet between studs instead of on framing.
4. Driving screws so deep they tear the face paper.
5. Using regular drywall inside a shower.
6. One thick coat of mud instead of three thin ones.
7. Recoating before the last coat is dry.
8. Sanding through the paper face.
9. Painting without primer, so the seams flash through.
10. Checking the finish only in normal room light.

DIY Drywall or Hire a Pro?

Patching a hole or finishing a small wall is a very doable DIY project if you are patient with the drying time. Ceilings, whole rooms and whole houses are a different job. Full sheets are heavy, and pro finishers spend years learning to make seams disappear. A good crew also moves through a house in waves, so the job is done in days instead of weekends.

If you decide to hire, describe the job clearly: the rooms, the ceiling height, new install or repair, the finish level you want, and whether paint is included. Then post your job free on BidHandyman, let local pros bid, compare their profiles and reviews, and hire the one you like. You can also read more about hiring for drywall work.