Drywall and Plasterboard Calculator: Studs, Tracks and Boards

Calculate total wall surface by multiplying partition length by ceiling height. For double-sided partitions, multiply this area by 2. For double-layer cladding on both sides, multiply by 4. Divide total cladding area by standard sheet coverage (2.4 m² for a standard 120x200 cm board, or 32 sq ft for a 4x8 ft board) and add a 10% allowance for cuts, window openings, and doorways.

Standard 60 cm (24 in) C-stud spacing is suitable for standard dry residential interior partitions up to 3.0 meters (10 ft) high. Switch to 40 cm (16 in) stud centers for wall surfaces receiving heavy ceramic tiles, damp environments (bathrooms and kitchens), multi-layer acoustic installations, or partition heights exceeding 3.0 meters to ensure structural rigidity.

Use Standard White (Type A) for general residential bedrooms and living areas; Moisture-Resistant Hydro Green (Type H1) for bathrooms, laundries, and kitchens; Fire-Resistant Pink (Type F) around chimneys, boiler rooms, and party walls; and High-Density Acoustic Blue for soundproofing partitions between rooms.

Estimate approximately 30 self-drilling drywall screws (3.5x25 mm or 1-1/4 in) per standard 120x200 cm sheet for single-layer installations. Fasten screws at 25 cm intervals along perimeters and 30 cm along intermediate vertical C-studs. For double-layer cladding, use 3.5x35 mm screws for the outer layer.

Self-adhesive polyethylene acoustic tape creates a resilient acoustic break between metal U-tracks and floor or ceiling slabs. This uncouples structural vibration, prevents impact noise flanking paths, and ensures airtight thermal and acoustic perimeter sealing.