Composite Door Locks
Composite doors use multipoint locks and euro cylinders like uPVC doors, but they're heavier and less forgiving of misalignment. Our locksmiths repair, replace and upgrade composite door locks.
4.8/5 on Trustpilot
3 years' trading history minimum
Public liability insurance
Proven customer satisfaction
Verified profile and photo ID checked
Composite door problems we fix
- The door is stiff to lock, especially in hot weather
- The handle won't lift or is loose
- The cylinder is worn or not anti-snap
- The door is stuck in the locked position
How we solve it
Your locksmith will adjust the keeps and hinges for expansion, replace worn gearboxes or mechanisms, and fit TS007 3-star or SS312 Diamond anti-snap cylinders.
How your locksmith helps
- Step 1
Check alignment
Hinges and keeps are adjusted first.
- Step 2
Replace worn parts
Mechanisms, handles or cylinders are replaced.
- Step 3
Upgrade
Anti-snap cylinders are fitted if you want them.
Why choose LockSub
- Multipoint mechanisms
- Anti-snap cylinders
- Handles and furniture
- Seasonal alignment adjustments
- Every locksmith ID-checked and insured
- Rated 4.8/5 on Trustpilot
Composite Door Locks: common questions
Why is my composite door harder to lock in summer?
Composite doors can expand in heat, which pushes the locking points out of line. Adjusting the keeps usually fixes it.
Related services
- uPVC Door Lock Repair — uPVC door won't lock, handle won't lift, or key won't turn? Fixed.
- Anti-Snap Locks — Protect uPVC and composite doors from lock snapping.
- Euro Cylinder Replacement — Worn or vulnerable euro cylinders swapped for anti-snap models.
Composite Door Locks near you
Available in every UK town and postcode area.
Need a locksmith now?
Speak to us 24/7. We'll send the nearest LockSub approved locksmith.