Winter in Cardiff isn’t just about woolly jumpers and hot drinks – it also brings challenges for landlords trying to protect their properties from the elements. From damp walls to frozen pipes, cold weather can cause serious damage if you’re not prepared.
That’s why winter property maintenance for Cardiff landlords is more than just a seasonal chore. It’s a crucial part of safeguarding your investment and keeping your tenants safe and happy.
Whether you’re managing a flat in Cathays, a terrace in Roath, or a family home in Llandaff, this guide will walk you through everything you need to know to avoid costly repairs and stressful emergencies.
Let’s get your property winter-ready.
Why winter maintenance matters in Cardiff
Cardiff’s winters are typically cold, wet, and unpredictable. Average temperatures drop below 3°C, and rainfall is frequent – which increases the risk of water ingress, pipe damage, mould, and heating issues.
Left unchecked, these problems can spiral into expensive repairs, unhappy tenants, and even legal liabilities.
But the good news is, with a landlord winter checklist, you can prevent most issues before they start.
Start with a full property inspection
Before winter fully sets in, carry out a top-to-bottom inspection of your rental. You’re looking for anything that could turn into a problem once the weather turns colder.
Focus on:
- Roof and gutters: Are there missing tiles? Are gutters blocked with leaves or debris?
- Windows and doors: Are they properly sealed? Any drafts or water ingress?
- Heating system: Is the boiler in good working order? Are radiators heating evenly?
- Pipes and plumbing: Are external pipes lagged? Any signs of leaks?
- Loft and basement spaces: Check for insulation and signs of damp or mould.
You can do this yourself if you’re experienced, or you might prefer to bring in a professional maintenance contractor – especially if you’re managing multiple properties.
Preventing burst pipes in your rental
Avoiding burst pipes in your rental property is one of the biggest priorities for winter.
When water freezes inside pipes, it expands. If there’s no room to move, the pipe can crack – and when it thaws, you’re left with a leak or flood. That’s not just inconvenient – it can be very expensive.
Here’s how to reduce the risk:
Lag all exposed pipes
Wrap insulation foam around external and vulnerable indoor pipes, such as those in unheated cupboards, garages, or lofts.
Leave heating on low
Encourage tenants to leave the heating on a constant low setting when they’re away for long periods. Even just 12–15°C can help prevent freezing.
Advise tenants on what to do in a freeze
Make sure they know where the stopcock is, how to turn off the water supply, and how to contact you in an emergency. A quick response can save serious damage.
Damp and mould prevention
Damp is a common complaint in older Cardiff properties, especially during winter. It can lead to mould, structural damage, and health concerns – all of which are your responsibility as a landlord under the Homes (Fitness for Human Habitation) Act.
Take these proactive steps to reduce risk:
Check ventilation
Ensure extractor fans are working properly in kitchens and bathrooms. Trickle vents on windows should be clear and open to allow airflow.
Encourage good habits
Provide tenants with a simple guide about reducing condensation – for example, keeping lids on pans, drying clothes outdoors or in well-ventilated areas, and wiping down wet surfaces regularly.
Inspect insulation and damp-proofing
Make sure the property is properly insulated, and that any previous damp treatment is holding up. This is particularly important in converting older properties, which are common across Cardiff.
Heating and boiler care
Heating is not just about comfort – it’s essential during the winter months. As a landlord, you’re legally responsible for maintaining the heating system in working order.
Here’s your winter boiler checklist:
- Annual service: Make sure the boiler has been serviced by a Gas Safe engineer.
- Bleed radiators: Check all radiators are heating evenly – if not, bleed them to release trapped air.
- Check the thermostat: Programmable thermostats help tenants keep the home comfortable and efficient.
- Emergency plan: Ensure tenants know how to report issues quickly and who to contact out of hours.
If your tenants are left without heating or hot water, especially during cold weather, it’s classed as an emergency repair – so being prepared could save a lot of stress.
Insulation and energy efficiency
Energy efficiency is not just about keeping bills down – it also helps protect your property from cold-related issues.
If your rental still has an EPC rating of D or below, consider the following:
Loft insulation
Proper insulation in the loft keeps heat inside and reduces the risk of pipes freezing above.
Cavity wall insulation
This can prevent damp and reduce heat loss – especially in mid-century or early-20th-century Cardiff properties.
Draught-proofing
Simple fixes like door brushes, window seals, and chimney balloons can make a big difference.
Better insulation = fewer heating problems = happier tenants.
Check your insurance cover
Make sure your landlord insurance policy covers winter-related damage, including:
- Escape of water (from frozen pipes)
- Storm damage
- Boiler breakdown (some policies include this)
Also, check the requirements – for example, some insurers require that heating be left on during vacant periods, or that regular checks are carried out. Failing to follow these could void your cover.
If your rental will be empty for more than 30 days, let your insurer know. You might need unoccupied property cover.
Stay compliant and communicate clearly
You have legal obligations as a landlord, even more so in winter. These include:
- Ensuring the property is safe and habitable
- Fixing serious heating or damp issues promptly
- Providing EPC and Gas Safety Certificates
But beyond the legal side, good communication is key.
Keep tenants in the loop
- Send a winter checklist or tips by email
- Remind them of emergency contact info
- Ask if they’ve noticed any issues that need attention
When tenants feel supported, they’re more likely to care for the property – and let you know when something’s not right.
Landlord winter checklist
Here’s a handy summary to keep you on track:
Heating and plumbing
- Boiler serviced by Gas Safe engineer
- Radiators bled and functioning
- Thermostat tested
- Pipes lagged, especially in cold areas
- Stopcock checked and accessible
Exterior checks
- Roof tiles secure
- Gutters and downpipes cleared
- Garden furniture stored or secured
- Outdoor taps drained or insulated
Damp and ventilation
- Extractor fans working
- Vents clear and open
- Windows and seals inspected
- Signs of mould treated promptly
Insulation and energy
- Loft insulation in place
- Cavity walls checked
- Draughts around doors and windows blocked
Tenant communication
- Emergency contacts provided
- Winter guide or checklist shared
- EPC and safety certificates up to date
Belvoir Cardiff: helping landlords all year round
At Belvoir Cardiff, we understand the local housing market, the Welsh climate, and the real day-to-day needs of landlords and tenants.
Whether you manage one rental or an entire portfolio, we offer professional, personal service – from seasonal maintenance support to full property management.
We work with trusted contractors to carry out inspections and repairs quickly and cost-effectively. And we’re always on hand with advice, reminders, and practical tips that make your job easier.
Because at Belvoir, we believe property is personal – and protecting yours matters to us.
Ready to protect your property this winter?
Don’t wait for problems to appear. A little preparation now could save you thousands in repair costs, reduce tenant complaints, and keep your Cardiff rental safe and sound.
Book a property health check
Discuss a maintenance plan
Get expert help with inspections
Speak to Belvoir Cardiff today – your trusted local lettings experts.
