Symptoms
White powdery corrosion and bubbling along panel edges.
Likely cause
Galvanic corrosion between aluminium panels and steel frames or fasteners.
Suggested fixes
Listed roughly in the order most owners try them.
- 1
Use barrier paint and stainless fasteners
Isolate dissimilar metals with barrier paint and use stainless fasteners.
- Difficulty:
- Moderate DIY
- Cost:
- £ (Under about £50 in parts)
- 2
Replace badly corroded panels
Fit new panels and seal edges.
- Difficulty:
- Moderate DIY
- Cost:
- ££ (About £50 to £300)
This is general guidance gathered from owner experience and workshop practice, not a substitute for a workshop manual or a qualified mechanic. Costs are rough parts-only guides. Brakes, steering and suspension work affects safety, so if in doubt have it checked professionally.
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