Pressed metal ceiling panels have corroded

Cause

High internal moisture levels

Repair

  • firstly, address the high internal moisture levels:

    • increase the amount of ventilation provided. Add a rangehood over the kitchen stove and an exhaust vent near the shower in the bathroom, both vented to remove steam to outside the house

    • opening windows for at least 10 minutes every day can make a difference

    • avoid using unflued gas heaters and avoid drying laundry inside – these add a lot of moisture to the air

  • if deterioration is minor, remove corrosion by lightly sanding. Apply a zinc-rich primer to a clean surface and repaint with a minimum of two coats of good quality acrylic paint

  • where corrosion is serious, locate a source of reproduction pressed metal ceiling tiles (there is a reasonable choice commercially available) and replace the ceiling

Cause

Leak(s) in the roof cladding

Repair

  • locate and repair the leak(s). Where it is suspected that leaking is extensive or the leak cannot be found, engage a registered building surveyor for advice

  • if deterioration is minor, remove corrosion by lightly sanding. Apply a zinc-rich primer to a clean surface and repaint with a minimum of two coats of good quality acrylic paint

  • where corrosion is serious, locate a source of reproduction pressed metal ceiling tiles (there is a reasonable choice commercially available) and replace the ceiling

Cause

Plumbing leak within the roof space

Repair

  • locate and repair the leak. Where the leak cannot be found, engage a licensed plumber to locate it and repair

  • if deterioration is minor, remove corrosion by lightly sanding. Apply a zinc-rich primer to a clean surface and repaint with a minimum of two coats of good quality acrylic paint

  • where corrosion is serious, locate a source of reproduction pressed metal ceiling tiles (there is a reasonable choice commercially available) and replace the ceiling