Best Window Locks for Campervan Security
Campervan windows are the weakest point in your van's security. A thief can pry open a sliding window in seconds with a screwdriver. Here is how to lock them properly.
The Problem with Factory Window Locks
Most campervan windows come with a single plastic latch. These are designed to keep the window closed while driving, not to stop a thief. The plastic breaks easily, and the mechanism can be popped open with a knife blade slid between the window frames. A survey by Thatcham Research found that 34% of van break-ins in the UK happen through a window. The average claim is £1,200 for stolen goods plus damage. A £15 window lock is cheap insurance.
Types of Window Lock
1. Sliding Window Locks (MoverLock / Fiamma)
For sliding windows (common on VW Transporters, Transits, and Ducatos with factory window kits). A metal block that slides into the window track and locks with a key. The window cannot slide past it. Best: MoverLock ML1 (£16 each, Amazon). Fits any sliding window track up to 12mm wide. Keyed alike available (one key for all locks). Install with a 4mm Allen key in 30 seconds. Also: Fiamma SecureLock (£22). A bolt-action lock that replaces the plastic latch. More robust than the MoverLock but requires drilling two holes.
2. Hasp and Staple Locks (Tambour Door Locks)
For hinged windows (awning windows, hopper windows). A small hasp and staple fitted to the window frame, secured with a padlock. The simplest and strongest option. Best: Master Lock 1.5in brass hasp (£8, Screwfix) + Master Lock 140D padlock (£10). The brass is weather-resistant. The padlock has a 25mm hardened steel shackle. Installation: Screw the hasp to the window frame and the staple to the window itself. Use 12mm stainless steel screws. Do not overtighten — the window frame is usually plastic or aluminium.
3. Window Deadbolts
A small barrel deadbolt that mounts into the window frame. A key turns a brass bolt into the window sill. Drilling required. Best: Lowe & Fletcher window deadbolt (£18 each, screwfix.com). Fits a 19mm hole. The bolt extends 14mm into the frame. Key-operated from both sides.
4. Security Film
Not a lock, but a deterrent. A clear polyester film applied to the glass. It holds the glass together if smashed, making it much harder to get through. Best: 3M Safety & Security Window Film (£30 for 1m x 2m roll, Amazon). Cut to size, apply with soapy water. A thief has to hit the glass 6-8 times to break through (vs 1 hit without film).
Which Windows Need Locks?
- Driver/passenger cab windows: Aftermarket sliding windows are common on campervan conversions. They are the easiest target.
- Rear door windows: Hinged windows on the rear doors. A thief can open the door and pop the window latch from inside the van.
- Side awning windows: If you have a window that opens outward, fit a hasp and staple.
- Roof vents: Not a window, but a common entry point. Fit a vent lock (Fiamma Vent Lock, £12).
Comparison
| Lock Type | Best For | Price Per Window | Installation | Security Level |
|---|---|---|---|---|
| MoverLock | Sliding windows | £16 | 30 seconds, no tools | Good |
| Fiamma SecureLock | Sliding windows | £22 | 15 minutes, drill | Very good |
| Hasp + padlock | Hinged windows | £18 | 10 minutes, screwdriver | Excellent |
| Deadbolt | Any hinged window | £18 | 20 minutes, 19mm drill bit | Excellent |
| Security film | All windows | £30 per van | 1 hour | Deterrent |
Other Van Security Tips
- A visible steering wheel lock (Disklok, £80) is a better deterrent than window locks alone
- A van alarm with a window shock sensor (£40, Amazon) triggers if the glass is tapped
- Tinted windows hide valuables but do not stop a thief who knows the van layout
- Fit a van safe (£30-80) bolted to the floor for laptops and wallets
Verdict
Fit MoverLocks on all sliding windows (£16 each, 30 seconds per window). Add a hasp and padlock on any outward-opening windows. Window security film is worth it if you park overnight in cities. The total cost for a full van: £60-100. The peace of mind is worth every penny.
