Category: Finishes
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
Corner beads are galvanised steel or PVC profiles fixed on external corners of walls, columns, and door and window openings, giving a straight arris and protecting the corner from damage.
Why it matters on a project
They make the difference between wavy hand-formed corners and clean straight ones, and cut corner repairs before painting.
Measurement and pricing
In linear metres, or included in the plaster rate, according to the contract's method of measurement.
Common mistake
Using ungalvanised steel beads in damp areas, so rust shows through the paint.
Frequently asked questions
Galvanised or PVC?
PVC does not rust and suits damp areas; galvanised is stronger on corners exposed to knocks.
Are they used on gypsum board?
Yes, with board-specific profiles fixed before jointing compound.
Related terms
- Plaster (render)A cement or gypsum layer applied to walls to level them before paint or cladding.
- Gypsum plasterA ready-mixed internal gypsum plaster with a smooth finish.
- Emulsion paintWater-based paint for internal walls and ceilings, in various sheen levels.
- Method of measurementThe agreed rules for measuring each BOQ item.
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