Board specification
Moving from standard 22 mm P5 board to denser, thicker or proprietary products typically adds £6–£25/m².
Floor geometry
Irregular rooms, stair openings and extensive perimeter cutting can increase the installed rate by 10–20%.
Access and handling
Manual distribution through completed plots or upper floors commonly adds £3–£7/m².
Waste allowance
Regular layouts generally require 5–8% waste, rising to 10–15% on small or heavily divided areas.
Fixing regime
Enhanced screw centres, full joint gluing or manufacturer-specific adhesives can add £2–£5/m².
Package size
Small phases, return visits and interrupted releases can increase the rate by 15–30% through lost productivity and repeated setup.