Locking up a summer house for winter: what to check first

Windows and doors before you drive off

Check every window closes fully and the latch actually catches, not just that it looks shut. Wooden frames in older Harju county summer houses often swell or shrink with the season, and a window that seemed fine in August can sit slightly open by October once the wood dries out.

Look at the seals and weatherstripping while you are at it. A gap lets in cold air, damp and small animals looking for somewhere to overwinter, and it is far easier to press new strip foam into place in September than to find out in January that mice have been living in the curtains.

Doors deserve the same attention: check the frame is not warped, that the door sits square, and that any secondary bolts or hooks are in working order. If a door has been dragging on the floor all summer, planing it down now is a small job, not a project for next spring.

When to replace a lock rather than patch it

A lock that is stiff, that needs the key wiggled, or that has been sprayed with oil twice already this year is not going to improve over a winter of frost and damp. If it is already giving trouble in autumn, it is worth replacing before you leave rather than hoping it holds until spring.

This matters more for a summer house than a town flat, because nobody will notice a lock has failed until the first visit months later — by which point the door may have been forced, or simply left unsecured the whole time. A working lock is one of the few things actually protecting an empty building.

If you are unsure whether a lock will see out the winter, replacing it is a straightforward job and usually cheaper than dealing with a break-in or a jammed door in spring. Lock replacement starts from 60 € per job, done properly with a new set of keys, and is one of the more useful things to book before the season ends.

• Key needs force or wiggling to turn
• Bolt does not extend fully or catches on the strike plate
• Visible rust or corrosion on the mechanism
• Lock has already been repaired once this year
• House is isolated enough that a break-in might go unnoticed for months

Electrics that should be switched off for winter

Anything not needed while the house stands empty should come off the circuit, not just be switched off at the socket. Water heaters, ovens, unused fridges and outdoor lighting circuits are the usual candidates — leaving them live all winter is a fire risk for no benefit.

The main things to keep are whatever is running your minimal heating and, if you have one, a frost alarm or a smart plug that lets you check the place remotely. Everything else can be isolated at the fuse board.

If you are not confident which breaker controls what, or the fuse board itself looks old and worth a look before winter, that is electrical work best left to a qualified electrician rather than guesswork with a torch in October. It starts from 49 € an hour and is worth doing properly once rather than finding a scorched socket in spring.

Whether to leave a little heating running

A summer house with the heating fully off for the winter will get cold enough that condensation becomes a real problem, especially in a building with little insulation or good airflow. Damp settling into wood, plaster and stored furniture over months does more harm than the frost itself.

Leaving a low background heat — enough to keep the inside a few degrees above freezing, not to make the place comfortable — is usually the better approach if you have heating that can run unattended safely and the electricity supply is reliable. A frost-protection setting on an electric heater, where available, is exactly for this.

If the house has no heating source that can be trusted to run alone for months, or the electricity supply is not something you want live and unwatched, ventilation matters more: crack a vent or leave an internal door open so air can move and moisture does not sit in one room.

Small jobs worth finishing before winter

Fences, gates, gutters and loose boards are all easier to deal with in October than after a winter of frost has made the damage worse and the ground too hard to work in. A gutter full of leaves that freezes solid can pull away from the fascia by spring.

Check the roof for any loose or lifted tiles, and clear gutters and downpipes so meltwater in spring has somewhere to go rather than running down a wall. It is also worth trimming back any branches that could come down onto the roof in a winter storm.

If there is a list of small jobs you have been putting off all summer — a loose step, a door that sticks, a shed hinge — closing-up time is the natural point to get through them. Odd jobs like these are charged from 39 € an hour, minimum one hour, and are often quicker to have done than to keep postponing.

Checklist before you turn the key

Going through the house room by room in a fixed order stops you missing something obvious in the rush to leave. Windows and doors first, then electrics, then a last look outside.

This is also the point to tell a neighbour or the local korteriühistu-style contact, if there is one nearby, that the house will be empty — a second pair of eyes over winter costs nothing and catches problems early.

• All windows latched and checked, not just closed
• Doors square, locks tested, weak locks replaced
• Non-essential electrics switched off at the fuse board
• Frost protection or background heating set, or ventilation left open
• Gutters cleared, loose tiles and branches checked
• Valuables and anything damp-sensitive removed or raised off the floor
• Someone nearby knows the house is empty for the season