Deduct openings
Door area is removed from board and insulation quantities, while dedicated framing allowances remain visible.
Free South African drywall calculator
Drywall calculator.
Frame the whole partition.
Estimate gypsum boards, metal studs and track, screws, joint tape and insulation for a straight internal partition with door openings.
Start calculating ↓▥Boards · studs · track
01One or two boarded faces
02Single or double layers
03400 or 600 mm stud centres
04Door-opening deductions
01
Drywall materials
Plan the complete partition
Set the wall, openings and lining build-up first. Then replace the planning rates with the selected tested-system requirements.
02
The method
How the estimate works
Each output shows its assumptions so you can replace defaults with the dimensions, pack sizes and rates available to you.
Count the lining
Net wall area is multiplied by boarded faces and layers, divided by board area, then increased by your cutting allowance.
Frame the run
Stud count follows the chosen centres with an end stud and a planning allowance around each doorway; top and bottom tracks are counted separately.
Specify the system
Saint-Gobain Africa's drywall calculator confirms the inputs that matter, including board layers, framing, openings, screws and insulation.
Important boundary
A material list is not a fire or acoustic design.
Partition height, duty, door mass, services, moisture, bracing, fire resistance and sound performance can require a different tested system or closer framing.
See all calculators →Real questions
Questions homeowners ask
How many drywall boards do I need?+
Calculate the net wall area after openings, multiply by the number of boarded faces and layers, divide by board area, then add a sensible cutting allowance.
Should drywall studs be 400 or 600 mm apart?+
It depends on partition height, board type, layers and required performance. Use the spacing specified for the complete manufacturer-tested system.
Do I subtract doors from a drywall estimate?+
Yes for boards and insulation, but doorways also need extra jamb and head framing. This calculator keeps both effects visible.
Can I use ordinary board in a bathroom?+
Wet or high-humidity locations need a compatible moisture-resistant lining and waterproofing design. Confirm the whole wall build-up, not only the board name.