A composite door typically lasts 25 to 30 years, and well-made ones can go beyond that. The glass-reinforced plastic skin does not rot or need repainting, so the locks, hinges, seals and glazed panels usually wear out first. A 10-year guarantee is a warranty period, not a lifespan.
What shortens the life of a composite door?
- Strong sun on dark colours, which can cause fading and movement
- A poorly fitted frame that sits out of square
- Neglected hardware and worn weather seals
- Thin skins and low-grade foam cores on budget slabs
Which parts need replacing first?
Multipoint locks, hinges, handles and seals commonly need attention after 10 to 15 years, and a double-glazed panel can fail and mist up. Each part can be replaced separately, so the door itself often keeps going.
How do you make a composite door last longer?
- Wash it with warm soapy water and avoid abrasive cleaners
- Lubricate hinges and the lock once a year
- Adjust the hinges if the door starts to drop
- Do not paint or sand the skin, as this can affect the guarantee
Wednesfield Trade Windows is a family-run, Certass-registered installer, and a correctly fitted frame is the biggest single factor in how well our composite doors age.
Thinking about a new door? We supply and fit doors across Wolverhampton and the surrounding area, and you deal directly with us, the owners. Call 01902 633355, message us on WhatsApp, or request a quote.