Overview
A proper service: lubricate cylinder, grease gearbox, adjust hinges, treat seals, clear drainage, check compression, wax slab, check hardware. £85-£120 typical.
Symptoms
- It's been more than 12 months since the last service.
Common causes
- General wear.
When to call a professional
- For a full annual service.
Prevention
- Annual service extends door life by years.