Catio maintenance: how to keep a cat enclosure safe and lasting

Updated 6 November 2026 · By the Cat Enclosures team

Short answer: Check a catio monthly for loose mesh, gaps, sharp wire ends and damage, clean it regularly, and do a thorough check each spring and autumn. Re-treat timber every one to three years with a pet-safe preservative, clear leaves and moss from the roof, and check cat-proof fence toppers after strong winds. Small repairs done quickly stop small gaps becoming escape routes.

Catio maintenance: how to keep a cat enclosure safe and lasting

Why maintenance matters

A catio is a permanent outdoor structure in the UK climate, which means rain, frost, wind and summer sun working on the timber, mesh and fixings every day. Most escapes from established enclosures happen through damage that crept in over time: a staple that worked loose, a batten that rotted, a gap that opened as the ground settled. A simple routine catches these early.

Maintenance is also about hygiene. Litter, spilled food, droppings from visiting birds and damp bedding can attract flies, rats and wasps, and can spread parasites. Regular cleaning keeps the space pleasant for your cats and stops pests treating the enclosure as a food source. Use pet-safe cleaning products and rinse surfaces well, because cats groom their paws after walking on them.

Monthly checks

Push along every mesh panel to find loose sections
Look at the base and door for new gaps or signs of digging
Check the door latch and lock still close firmly
Look for sharp wire ends or splinters on shelves and ramps
Remove droppings, old food, leaves and debris
Wash water bowls and check bedding is dry

Seasonal routine

Season	What to do
Spring	Full check after winter, tighten fixings, treat any soft timber, clean the roof and mesh, refresh bedding and plants
Summer	Check shade and ventilation, watch for wasp nests under the roof, keep water topped up
Autumn	Clear leaves from the roof and gutters, re-treat timber if due, check the roof seals before winter
Winter	Check after storms and heavy snow, clear snow off the roof, make sure shelter and bedding stay dry

Looking after timber

Pressure-treated timber resists rot, but it still weathers. Re-treating every one to three years, depending on exposure, keeps it sound. Use a preservative or stain labelled safe for use around animals once dry, apply it when your cats are indoors, and keep them out until it is completely dry. Pay attention to the bottom of posts and any timber near the ground, which rots first.

Soft, spongy or cracked timber near a fixing point should be replaced rather than painted over, because the mesh fixings in it will no longer hold.

Looking after mesh and roofing

Galvanised mesh lasts well but can rust where the coating is damaged, especially at cut ends. Small rust spots can be wire-brushed and treated with a cold galvanising spray. Replace any panel where the wire has thinned or a weld has broken.

Polycarbonate roofing should be cleaned with mild soapy water, not abrasive cleaners or pressure washers, which can damage the surface. Clear moss and leaves so water drains away. Felt roofs should be checked for splits and lifted edges, particularly after storms.

Hinges, latches and door bolts take more wear than anything else on a catio, because they move every time you go in. A drop of oil each season keeps them working smoothly, and a latch that has started to stick or drop is worth replacing before a cat learns it can nudge the door open. Check that any padlock or bolt still lines up properly, as timber frames can move slightly as they dry out in summer and swell in winter.

Cat-proof fencing

Walk the whole boundary every month and after strong winds
Check topper brackets are still tight on posts and walls
Look for new gaps under gates and fences as the ground settles
Cut back trees and shrubs growing near the boundary
Check nothing new, such as a bin, log store or neighbour's shed, now gives a launch point
Talk to neighbours before they replace a shared fence, so toppers can be refitted

When to call for repairs

Small fixes such as re-fixing a mesh corner or replacing a hinge are easy to do yourself. Call for professional help if posts are rotting at the base, the frame has moved out of square, the roof is leaking onto shelves, or storm damage has opened a large gap. Keep your cats indoors until the repair is done.

A quick annual review is also a good moment to think about whether the enclosure still suits your cats. Kittens become confident climbers, older cats lose mobility, and a new cat changes how the space is shared. Adding a ramp for an arthritic cat, raising the height for a young climber or adding a second hiding spot can make more difference than any repair.

Part	Typical life with basic care
Pressure-treated timber frame off the ground	10 years or more
Galvanised welded mesh	10 years or more, less near the coast
Twinwall polycarbonate roof	Often 10 years or more
Roofing felt	Around 5 to 10 years
Hinges, latches and screws	Check yearly and replace if rusted

These are rough guides only. Exposure, quality of materials and how well the enclosure is looked after make a big difference.