Category: Finishes
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
Gypsum ornaments are decorative cast plaster elements such as cornices, ceiling roses, arches and frames, fixed to ceilings and walls in classic interiors.
Why it matters on a project
Mould quality, fixing and joints decide whether the result looks luxurious or cheap; visible joints are what give poor work away.
Measurement and pricing
Cornices in linear metres; special pieces by number.
Worked example
A 4 × 5 m room: 18 linear metres of cornice on the perimeter, with special pieces such as a ceiling rose counted by number.
Common mistake
Fixing cornices before walls and ceilings are straight, leaving gaps between cornice and surface.
Frequently asked questions
Is cast gypsum suitable for bathrooms?
Better avoided in wet areas, or replaced with moisture-resistant alternatives.
How are cornice joints hidden?
By accurate cutting, bonding and fixing, then filling and sanding before painting.
Related terms
- Suspended (false) ceilingA secondary ceiling hung below the structural slab to conceal services and improve acoustics and lighting.
- Gypsum board (drywall)Gypsum panels on metal framing for dry walls and ceilings.
- GRC (glass-fibre reinforced concrete)A cement mix reinforced with alkali-resistant glass fibres, lightweight, used for facades and ornament.
- Putty (skim coat)A thin smooth layer over plaster preparing the surface for paint.
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