Category: Finishes
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
Gypsum plaster is a ready-mixed internal plaster based on gypsum, usually applied in one coat on blockwork or concrete, giving a smooth level surface ready for skim or paint. It dries faster than cement plaster.
Why it matters on a project
It shortens internal finishing and reduces hairline cracks, but it is not for wet or external areas.
Measurement and pricing
Per square metre of walls and ceilings with large openings deducted.
Common mistake
Using it in bathrooms and kitchens behind tiles or on facades, where moisture affects it.
Frequently asked questions
Does gypsum plaster need skim?
Its surface is smooth; a light skim or primer may be enough before paint, depending on workmanship.
Can it be used on concrete ceilings?
Yes, after a suitable bonding coat on smooth concrete.
Related terms
- Plaster (render)A cement or gypsum layer applied to walls to level them before paint or cladding.
- Putty (skim coat)A thin smooth layer over plaster preparing the surface for paint.
- Emulsion paintWater-based paint for internal walls and ceilings, in various sheen levels.
- Surface preparationCleaning a steel surface to a specified grade (e.g. SSPC-SP 10) before coating to ensure adhesion.
Read next
- Interior fit-out stages, from site handover to project handover
- Work out quantities with our free calculators: concrete, tiles, paint and plaster. Open the calculators
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