Plastering Your Extension: What to Expect and What It Costs
PremiumPlastering costs £3,500–£5,500 for a typical extension. How boarding, skimming, and drying work, what fireboard is, and why your plasterer won't do it all in one visit.
Do this first:
Plastering controls your finishing timeline. Every other second fix trade waits for it. Your electrician can't fit faceplates until the walls are plastered. Your decorator can't start until the plaster is dry. Your kitchen fitter needs dry, painted walls before fitting units against them. Get plastering wrong or late, and the entire completion date shifts.
The frustrating part? Plastering doesn't happen in a single visit. Your plasterer will come back repeatedly over several weeks, working room by room as each area becomes ready. And between the final skim coat and the first coat of paint, you'll be waiting. Possibly for weeks.
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