Calculate the estimated cost of drywall installation — material, hanging, taping, finishing, and primer — with an itemized breakdown. National average cost: $2.5–$5 per sq ft. Enter your project size below for an itemized breakdown — adjust any line item to match your local prices and scope.
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Installing drywall sheets horizontally (perpendicular to studs) results in fewer butt joints, stronger walls, and a better finished surface than vertical installation. Horizontal sheets span more studs per sheet, reducing movement and cracking at seams. This is standard professional practice but often skipped on DIY installs.
Coat corners with paper tape, not metal bead, for best results
Metal corner bead is faster to install but is prone to denting and creates a hard visible line if ever impacted. Paper-faced metal corner bead gives straight, clean corners that are more forgiving of minor impacts and require less feathering of compound. On inside corners, paper tape embedded in compound outlasts all-mesh tape by years.
Prime before painting — always
Unpainted drywall compound and paper facing absorb paint at completely different rates, creating an obvious "flashing" effect even under multiple coats of paint. A coat of drywall primer ($0.20–$0.40/sq ft) seals the surface uniformly and is the single most important step between finishing and painting. Skipping primer leads to multiple extra paint coats and visible lap marks.
Drywall installation (hang and finish to Level 4) costs $2–$4 per sq ft of wall and ceiling area. A 1,200 sq ft area costs $2,400–$4,800 for a typical residential project. Level 5 finish (skim coat, required under flat paint or in spaces with raking light) adds $0.50–$1.00 per sq ft. Material alone (drywall sheets) runs $0.50–$0.75 per sq ft.
Level 0 is bare board (temporary). Level 1 is tape in place (fire rating, hidden areas). Level 2 is one coat of compound (tile backer, utility areas). Level 3 is two coats (texture walls, commercial). Level 4 is three coats, standard for residential paint-ready walls. Level 5 is skim coat over the entire surface — required in high-end residential under flat paint or wherever raking natural light would reveal surface imperfections.
½" drywall is the standard for most walls and ceilings with 16" or 24" stud/joist spacing. ⅝" Type X is required for garages, around furnaces, and fire-rated assemblies. ⅜" is used for curved walls and arches. 5/8" is also preferred for ceilings to reduce sag, especially for 24" joist spacing. Cement board (½" or ¾") is used in wet areas — bathrooms and kitchens — not standard drywall.
Each coat of all-purpose joint compound needs 24 hours to dry before the next coat is applied. A standard 3-coat finish (tape bed, second coat, finish coat) takes a minimum of 3 days for the compound alone, plus 1 day for sanding and primer. Hot mud (setting-type compound) chemically sets in 20–90 minutes and can be coated faster — used by professionals for first coats and repairs to speed the schedule.
Yes — applying ½" drywall over plaster is a common approach when the plaster has many cracks or loose spots but the framing behind it is sound. Attach with longer screws (2.5") to hit the studs through both layers. The total wall thickness increases by ½", which requires extending electrical boxes and replacing window and door casings. This costs 30–40% less than full plaster demo and disposal.
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