Calculators
Drywall planning calculators
Drying time by conditions, a project schedule with real dates, finish level choice, dumpster size, drywall vs plaster, and delivery and lift planning.
The hanging is a day; the finishing is a week, and most of that week is waiting for compound to dry. A schedule that ignores the temperature and humidity in the room is fiction. These calculators turn the sheet count, the crew and the drying conditions into hours per phase and calendar dates, so the painter is booked for the right Monday.
The group also holds the decisions that are easier with numbers next to them: which finish level the room needs, whether veneer plaster would cost more, what size dumpster the tear-out needs, and whether boom delivery and a panel lift are worth it for the ceilings.
6 calculators
Joint Compound Drying Time Calculator
How long a coat of joint compound takes to dry at your temperature and humidity, by coat thickness and airflow, or when setting compound can be recoated.
Drywall Project Schedule
Dates for every stage from a start date: hanging, each finishing pass after it dries, sanding, priming and the day it is ready for paint.
Finish Level Selector
The drywall finish level a room needs from its use, paint sheen, texture and lighting, with what it costs against the others.
Drywall Dumpster Size Calculator
The dumpster size for a drywall or plaster tear-out or for offcuts, by weight and volume, whichever limits first.
Drywall vs Plaster Cost Comparison
Drywall finished to Level 4 or 5 against veneer plaster over blueboard: the cost of each, the difference and the finishing time.
Delivery Trips & Lift Rental Planner
Whether to collect the board or have it delivered, the trips your vehicle needs, and the panel lift days for the ceilings.
Guides for this topic
DIY drywall: hang it yourself, hire the finish?
Hanging drywall is heavy but learnable in a weekend. Finishing it so it disappears under paint takes years. That is why the middle option is so common.
How long joint compound takes to dry, coat by coat
Twenty-four hours between coats is true at 70 °F and 70% humidity. In a cold basement it can be five days; in a warm, dry room, an afternoon.
Drywall textures: orange peel, knockdown, popcorn, and how much material
A texture hides small flaws and changes how a room looks and sounds. Each one has its own material, tools and coverage, and old ones come with a warning.
Drywall vs veneer plaster: cost, time and finish
Veneer plaster is the modern plaster: hard, smooth and decorated the day after it goes on. It costs more than drywall, and here is how much more.
What drywall weighs and how to get it into the house
A room's worth of drywall weighs as much as a small car. Planning how it travels, where it is stacked and how it goes up saves backs, floors and corners.
Garage drywall: the fire-separation rules and type X
An attached garage is the one place most houses need fire-rated drywall. The rules are short and specific, and they decide which board goes on which surface.
Hanging drywall: ceilings first, then walls, and why
Every hanger does the ceiling first. The reason is structural, not habit, and the same logic decides the order of every row on the walls.
Joint compound: all-purpose, lightweight, setting, and gallons per sheet
One bucket per ten sheets is the rule everyone quotes and nobody can source. Here is what the makers publish, and how the finish level changes it.
Levels of drywall finish, 0 to 5, explained
When a contractor quotes "taped and finished", ask which level. The answer decides how the walls look under paint, and a fair part of the price.
How to read a drywall quote (and compare two)
Two drywall quotes can differ by half and both be fair, if they price different jobs. The trick is making them price the same one.
Removing old drywall and plaster: weight, dumpsters and asbestos
Tear-outs are quick and heavy. The planning is mostly about weight, and, in older homes, one test before the first swing.
Questions people ask
- How long does joint compound take to dry between coats?
- Ready-mixed compound dries by evaporation: about 24 hours per coat at 70 °F and 70% humidity (USG) with some air movement, longer for thick fill coats and much longer in a cold, damp basement, where a coat can take two or three days. Setting-type compounds harden chemically in 20 to 90 minutes regardless of humidity, which is why they are used for the first coat when time is short.
- How long does it take to drywall a room?
- For a 12 × 12 room with 17 sheets, hanging is a day for two people. Taping and three coats of ready-mixed compound take about four working days, mostly drying time, then a half day of sanding and priming. Call it a week from bare studs to a wall ready for paint.
- Which finish level do I need?
- Level 4 for most painted walls and ceilings with flat or eggshell paint. Level 5 where a wall gets raking light from a large window or a wall-washer fixture, or where you will use a gloss or semi-gloss paint, because every ridge shows. Level 3 is enough under a heavy texture, and Level 2 is fine behind tile or in a garage or storage room.
- What size dumpster for drywall removal?
- Drywall weighs about 1.6 lb per sq ft at 1/2 in, so a 1,500 sq ft tear-out is about 2,400 lb plus the screws and trim, and a 10-yard dumpster handles it. Plaster and lath is two to three times heavier, and weight limits on dumpsters matter more than volume for this kind of debris.
- How many trips to carry drywall in a pickup?
- A half-ton pickup is typically rated for 1,500 to 2,000 lb of payload, which is about 30 sheets of 1/2 in 4 × 8 board or 20 sheets of 5/8 in. Twelve-foot sheets overhang the tailgate and need flagging. Above about 40 sheets, a boom-truck delivery that stacks the board inside the room is usually cheaper than your time.
More calculators on our other sites
Floorings Calculator
How much tile, wood, vinyl, carpet, underlayment and trim a floor needs, and what it costs.
Paints Calculator
How much paint, primer, stain and wallpaper a job needs, and what it costs.
Roofings Calculator
Shingles, pitch, rafters, metal panels, gutters, ventilation and what a new roof costs.