Square-set vs cove cornice - which is better?

Cove cornice (the curved 75mm or 90mm profile) is the standard, cheapest, and most forgiving option - small wall movement is hidden behind the curve. Square-set has no cornice; the wall meets the ceiling in a crisp 90-degree corner. It looks more modern but needs precision plastering and is more prone to visible cracking over time.

How much do cornices cost in a new Australian home?

Standard 75mm or 90mm cove cornice is usually included in your base price - there's no extra cost. Decorative profiles (Victorian, Edwardian, large step profiles) typically add $5-$25 per linear metre. Square-set ceilings are commonly a $2,000-$5,000+ upgrade because of the extra plastering time.

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Building Elements

Cornices

By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580

Last reviewed: 1 March 2026 · How we research

Cornices explained in detail

A decorative architectural feature that projects from the top of a wall or where walls meet ceilings. It is typically made of plaster and is used to add visual interest and conceal the junction between walls and ceilings. Cornices come in various profiles from simple cove to ornate Victorian styles.

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Frequently Asked Questions

Common questions about cornices

A cornice hides the junction between your wall and ceiling - a structural gap that always exists from movement and tolerances. Without one, you'd see cracking and an unfinished line where the two meet. Cornices also add architectural character: from simple cove to ornate Victorian profiles.

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