Around three quarters of UK caravan owners now travel with a dog. The same caravan that is comfortable for the family at 17 degrees overnight becomes a thirty-degree sealed box on a July afternoon, and the lockable security catch most caravan windows are fitted with does not allow safe ventilation while the owner is at the beach. Searches for dog-friendly caravan content peak in July, August and September. The right answer for owners who want to leave their dog cool and secure is to lock the window open at a safe gap. LockLatch® is patented internationally (UK patent EP2989274, SA patent 2014/09494, USA patent 9,797,173), made from C304 rust-resistant stainless steel, and fits any caravan or motorhome window with a simple four-hole installation any owner can do themselves.
The Caravan-Dog Dilemma
UK caravan and motorhome ownership has grown sharply over the past five years, with the Camping and Caravanning Club reporting over a million members. Pet ownership across the same group has grown faster still — surveys put dog-owning caravan households at around 70 to 75 per cent. The summer months that the UK caravan market lives off coincide with the months when leaving a dog in a closed caravan becomes dangerous.
The problem is one of physics. A caravan parked in direct sun on a UK summer day reaches internal temperatures 15 to 25 degrees above ambient within an hour. At 24 degrees outside, the inside of a closed caravan can climb to 45 degrees. Dogs cannot regulate their body temperature efficiently above 32 degrees. The standard advice — open windows for ventilation — assumes the windows can be left open safely without the caravan being broken into.
Inside-Caravan Temperatures vs Outside
Real-world testing by RSPCA-aligned campaigners and caravan-club volunteers shows the relationship clearly. With windows fully closed, internal temperatures rise rapidly. With windows on a basic opener (typically 5cm gap, no security), temperatures still rise but more slowly. With proper cross-ventilation through two opposing windows at a 9 to 17cm secured gap, internal temperatures track within a few degrees of ambient.
The point is not to make the caravan air-conditioned. The point is to keep the dog within a survivable temperature range during the hour or two the family is at lunch or on the beach.
How LockLatch® Works
The product is straightforward. The arm adjusts to a chosen width, a locking pin drops into one of the four holes in the barrel, and the lock is secured with a removable key. The diagram below labels the four key features.
The Three Failure Modes of Standard Caravan Window Catches
Most UK caravans are fitted with Polyplastic, Seitz or Dometic window catches. These are designed for the window’s own structural use — holding it open against wind, holding it shut against rain. They are not security devices. The three ways they fail when used as security:
- The catch can be released from outside. Standard caravan window catches use a simple mechanism that can be reached through the gap and released by hand. A would-be intruder does not need a key.
- The catch holds the window at a fixed position. If the position is narrow enough to be secure (5cm), it is too narrow for proper cross-ventilation. If the position is wide enough for proper ventilation (15cm), it allows entry.
- The catch fails over time. Polyplastic catches are wear parts. Caravan owners replace them regularly. The replacement parts available on Amazon and Caravan Crazy are spares for failed catches, not security upgrades.
This last point matters because the UK SERPs for “caravan window lock” are dominated by replacement-part listings. Owners searching that term assume the standard catch is a security feature. It is not.
How to Lock a Caravan Window Open Safely
A purpose-built secondary lock — fitted alongside the existing catch, not replacing it — gives the caravan owner what they actually need: an adjustable gap held rigidly in the open position with a lock the dog cannot release and an intruder cannot bypass.
LockLatch® at the 9 to 17cm range is the right choice for most caravan windows. The C304 stainless-steel arm holds the window at the chosen gap. A lockable pin secured by a removable key holds the arm in position so the gap cannot be widened without the key. The footplates usually mount to the middle of the frame rather than the very edge, reducing the effective gap by 3 to 4cm — which works in the owner’s favour because the practical opening is below 13cm at the maximum setting.
Installation is a job the owner does themselves. Four small holes are drilled into the caravan window frame, then the footplates are secured using pop rivets — caravan windows are aluminium or uPVC and rivets are the right fixing for both. The rivets pass through the outer skin and grip the inner metal frame, which is what gives the window its structural strength. Both the pop rivets and the one-way security screws (for any timber-framed application) are supplied with the product, so there is no separate trip to a hardware shop. The whole job takes about 15 minutes per window. No tradesman is required, which matters more than it sounds — letting an unfamiliar person into your caravan introduces its own security risk on a security product.
For caravans where the priority is keeping a smaller dog cool while deterring a larger animal (or person) entering, MiniLatch® at 4.5 to 8cm is the alternative.
Caravan-Specific Use Cases
Three scenarios where UK caravan owners use LockLatch® most:
- Sleeping dog while the family is at the beach. Park the caravan in shade, fit LockLatches on two opposing windows for cross-ventilation, leave water down. The dog sleeps. The caravan stays secure. Family returns after lunch.
- Quick pub or shop trip. Two-hour absences are common on UK caravan trips. The dog is left in the caravan with windows secured open. Owner has phone proximity. No risk to the dog from heat.
- Extended excursions. Day trips that include venues where dogs are not welcome (museums, certain restaurants, attractions). Caravan with locked-open ventilation becomes a viable temporary kennel for the day.
The Insurance and Caravan Club Recommendation Line
UK caravan insurance providers and the major caravan clubs publish security advice for tourer and motorhome owners. The standard guidance includes hitch locks, wheel locks, alarm systems and proper window locks. The window-lock category typically refers to anti-theft fittings on the closed window. LockLatch® addresses the gap that conventional security advice does not cover: the open window during the day when the dog is inside. It is better than an unrestricted open window, but not absolute — the standard UK insurance position still applies, that when premises are unoccupied, all windows and doors should be closed and locked.
For wider caravan security advice, see our guide to caravan window locks for ventilation while you sleep, which covers the overnight scenario in more detail.
UK Sites That Welcome Dogs
The UK has thousands of dog-friendly caravan sites. The Caravan and Motorhome Club, Camping and Caravanning Club and most independent sites welcome dogs with minimal restrictions. Setting up the caravan for safe dog ventilation is the same on all of them: park in shade where possible, plan the orientation so the prevailing breeze enters the bedroom window, and fit LockLatch® or MiniLatch® on the windows the dog will rely on for airflow.
For the camping pitch specifically, two LockLatches on opposing windows give the best cross-ventilation. The bedroom window benefits from the wider 9 to 17cm range; a smaller side window can run on the narrower MiniLatch® setting if the owner prefers.
Battle-Hardened in South Africa, Refined for UK Caravans
LockLatch® was invented in South Africa, where summer temperatures regularly exceed those of UK Augusts and where homeowners have used the same product to keep windows safely open for over 12 years. The engineering that has been proven against South African heat is the engineering inside the caravan parked at Camber Sands or Filey Bay this July.
LockLatch®, MiniLatch® and PetLatch® ship worldwide from distribution centres in the UK and South Africa. The UK distribution centre is in Penley, near Wrexham, with delivery across England, Scotland, Wales and Northern Ireland typically 1 to 2 working days via 1st class Royal Mail. International orders ship via Royal Mail and international couriers — customers in Europe, North America, Australia, New Zealand and the rest of the world receive the same product, the same lifetime guarantee and the same C304 rust-resistant stainless steel construction.
Shop LockLatch® now and keep your dog cool and secure on every caravan trip this summer.
