Gledhill cylinder shows signs of corrosion around fittings or at the base

Safety: Corrosion can lead to sudden cylinder failure and flooding. If the cylinder wall appears compromised, isolate water and power and consult a professional immediately.

Steps:

• Identify source: Determine whether corrosion is due to external leaks (e.g. from fittings) or from within the cylinder.
• Repair leaks: Fix any leaking joints or components to prevent further external corrosion.
• Anode check (if fitted): Some Gledhill models use sacrificial anodes. Have these inspected and replaced if depleted.
• Assess cylinder integrity: If corrosion is extensive, replacement of the cylinder is usually the only safe option.

Note: Do not attempt to patch a corroded cylinder shell; this is not a reliable or safe repair.