8 calculators
Walls & Finishes
Drywall, plaster, insulation, paint, cladding.
Drywall CalculatorSheets, screws, mud and tape for a roomStucco & Plaster CalculatorStucco, veneer and patch plasterInsulation CalculatorBatts, rolls or blown-in to an R-valueDrop Ceiling CalculatorTiles, mains, cross tees, wall angle and wiresWallpaper CalculatorRolls needed with pattern repeatPaint CalculatorPaint for walls and ceilings, with coats and tin sizesExterior Paint CalculatorHouse walls and gables, with surface textureSiding CalculatorSquares of siding with starter, J-channel and corners
Guides for this trade
Walls & Finishes
How to estimate drywall for a room
Sheets, screws, mud and tape: measure once, count sheets the way installers hang them, and finish with the right consumables.
6 min readWalls & FinishesHow much paint? Coverage, coats and surfaces
Coverage rates on the tin assume perfect conditions. Here is how to adjust for surface, colour change and method so you buy the right amount.
5 min readWalls & FinishesInsulation R-values: how much do you need?
R-value targets by climate zone, batts vs blown-in, and how to count bags.
6 min read