Common cornice problems
- Fine cracks where the cornice meets the ceiling or wall.
- A widening gap above or below the cornice.
- A loose length that sounds hollow or moves.
- Chipped corners and damaged joins.
- Cracks extending from the cornice into the ceiling.
- Water staining, softened material or paint bubbling.
A small stable crack may be a local finish issue. Separation across a longer run, movement in the ceiling or a heavy loose section requires a broader assessment.
Why cornices crack or pull away
Cornices bridge two surfaces that can move differently. Failure can occur when adhesive or setting material loses bond, the ceiling moves, the wall-to-ceiling junction changes, moisture affects the material or the original installation has limited contact. Previous filler-only repairs may open again if the loose section was never re-secured.
Repair or replace the cornice?
A sound cornice may be re-secured and the junction rebuilt. Damaged, missing or unreliable sections may need removal and replacement. The decision depends on the cornice material, profile, length, surrounding ceiling and whether a suitable match is available.
Matching an existing cornice profile
Standard cove cornices are generally easier to match than older decorative profiles. For ornate or discontinued cornices, the repair may involve careful local rebuilding, sourcing a close profile or replacing a longer balanced section. Photographs of the full wall, corner and cornice profile help prepare the enquiry.
Typical cornice repair process
- Assess the ceiling, wall junction and loose cornice.
- Remove unstable filler, adhesive or damaged material.
- Re-secure or replace the affected section.
- Rebuild joins and corners to suit the profile.
- Feather, sand, seal and paint to the agreed boundary.
How much does cornice repair cost?
Minor repairs, holes and short sections of cracked cornice generally fall within CRP’s indicative $180–$550 range. Longer runs, ornate profiles, high ceilings, water damage, ceiling movement and broader painting requirements can increase the scope.
Review the complete ceiling repair cost guide or request a written quote for the actual junction.
Frequently asked questions
Can a gap above the cornice be filled with flexible sealant?
Sealant may disguise a fine stable line, but it will not secure loose cornice or correct a moving ceiling. The cause and attachment should be checked first.
Will the new cornice match the old profile?
That depends on the existing profile and availability. CRP will identify the proposed matching or replacement boundary in the written quote.
What warranty applies?
CRP provides a one-year warranty on ceiling repairs, subject to the agreed scope and warranty terms.