Area and continuity
Large uninterrupted pours can reduce the rate by 8–15%, whereas numerous small rooms commonly add £8–£18/m².
Material handling
Direct pump access supports the base rate, while long hose runs, barrowing or upper-floor handling can add £4–£12/m².
Thickness variation
Each additional average 10mm of screed typically adds £3–£5/m² through increased material and handling.
Programme demands
Fast-drying products or accelerated return-to-work requirements can increase the installed rate by 35–70%.
Reinforcement
Polypropylene fibres generally add £2–£5/m², while mesh reinforcement can add £7–£14/m².
Regional market
London, the South East and labour-constrained locations can attract premiums of 10–20% over typical regional pricing.