Overview
Composite doors are technically installable DIY but the tolerances, sealing and security details are unforgiving. Most DIY installs need remediation within 2 years.
Symptoms
- Alignment drift.
- Water ingress.
- Security failures.
Common causes
- Frame not level, plumb and square.
- Wrong fixings.
- Poor sealing.
When to call a professional
- Most homeowners are better off with a professional install - cost is often lower than materials + your time + inevitable remediation.
Prevention
- Get a professional quote before committing to DIY.