Winter window maintenance checklist: Essential tasks to prepare your Surrey home

Winter window maintenance checklist: Essential tasks to prepare your Surrey home

As temperatures start to drop and winter approaches, most of us think about heating our homes and getting out the woolly jumpers. But there’s something equally important that many homeowners overlook, a thorough winter window maintenance checklist.

Your windows are your home’s first line of defence against the cold weather. They’re also a major factor in determining whether your energy bills skyrocket or stay manageable during the colder months. Neglected windows can lead to heat loss, cold air leaks and uncomfortable draughts that make even the cosiest living room feel chilly.

At Sherborne, we’ve been helping Surrey homeowners protect their properties for over 30 years. We’ve therefore got a real understanding of window styles and materials that manage to increase the value of your home, add comfort, and keep your energy costs under control. We’ve put this handy guide together to advise you on how to maintain your windows during the colder months. This is relevant whether you have double glazing, timber frames, uPVC, aluminium, etc, helping to ensure your windows perform at their best when you need them most.

Winter maintenance checklist: How to prepare your home for the cold

Winter is the perfect time to give your windows and doors some attention. By tackling these simple maintenance tasks now, you’ll avoid costly repairs down the line and ensure your home stays warm and secure throughout the winter season.

Checking seals and rubber gaskets

The rubber seals around your window frames and door frames are crucial for preventing cold air from sneaking into your home. Over time, these seals can crack, shrink or become less effective, especially after months of temperature extremes.

Here’s what to look for: inspect the entire perimeter of each window and door. Run your finger along the seals and look for any visible gaps, hardening or deterioration. If you spot any issues, it’s time for a professional inspection. We can assess whether your seals need replacing or if your windows require a more comprehensive solution.

Poor seals are one of the biggest culprits behind unwanted draughts and increased energy bills.

Clearing condensation and controlling humidity levels

Finding occasional condensation on your windows during the winter months is perfectly normal. However, if it’s persistent or appearing between the glass panes of your double glazing, that’s a sign something isn’t right.

To manage condensation on the interior of your windows, try these simple steps:

• Wipe down glass panes with a soft cloth each morning
• Use a damp cloth to gently clear misting (avoid abrasive materials)
• Make sure you have proper ventilation throughout your home
• Consider using thermal curtains to reduce temperature differences

If condensation is trapped between the panes themselves, this suggests your double glazing seal has failed. Contact us for a professional inspection.

Inspecting window frames thoroughly

Your window frames bear the brunt of weather throughout the year. Winter is an ideal time to check them over before the worst of the cold weather arrives.

For uPVC frames: Look for any cracks, discolouration or soft spots. uPVC is low maintenance, but severe damage might require professional repair or replacement.

For timber frames: Wooden windows need more attention. Check for signs of rotting wood, peeling paint or wood that feels soft. Timber is long-lasting and sustainable, but proper maintenance is essential. If you notice soft spots, don’t delay, as water damage can spread quickly.

For aluminium frames: These are very strong and durable. Check that the frames aren’t bent or twisted and that they remain properly sealed.

Also inspect your window sills for any water damage or debris accumulation. Clean them out regularly.

Ensuring locks and hinges function properly

A window that won’t close properly is a security risk and a source of heat loss. Take time to test every window and door in your home.

Check that:

• All locks turn smoothly without resistance
• Windows and doors close fully and latch securely
• Hinges don’t squeak or stick
• There are no visible gaps when windows are closed

If you notice any issues with smooth operation, a small amount of silicone-based lubricant can work wonders. We equip our windows with security hardware from Yale, Maco and Winkhaus, so your home benefits from excellent security performance.

Making sure your windows perform during winter

Windows play a vital role in maintaining a comfortable temperature inside your home and keeping your energy bills manageable. When windows deteriorate, heat loss accelerates, your heating system works harder and your energy costs climb.

The winter months are when you’ll notice the difference most. A window that was “just about okay” in summer becomes a real problem when temperatures plummet.

Signs your windows may need replacing

If you’re experiencing any of these issues, your windows might be costing you money unnecessarily:

• Persistent cold draughts around window frames even when closed
• Visible condensation between glass panes of double glazing
• Difficulty opening or closing windows smoothly
• Visibly damaged or deteriorating frames
• High energy bills that don’t match your heating usage
• Noise pollution from outside

Modern replacement windows with double glazing work far more effectively at reducing heat loss. If your current windows are showing several of these signs, this is a great time to consider upgrading.

How old windows impact your heating bills

Windows installed more than 15-20 years ago can be responsible for up to 30% of your home’s heat loss. That’s a significant amount of wasted energy and money.

Modern double glazing technology has improved dramatically. Today’s windows feature high-performance glass panes, better thermal efficiency and superior sealing. They’re designed to minimise heat loss and reduce the strain on your heating system throughout the cold season.

Replacement windows from Sherborne

If your winter window maintenance checklist reveals that replacement is necessary, we’re here to help. We offer a range of double glazed windows in materials and styles to suit every home across Surrey and beyond.

Window styles

• Casement windows – The practical choice for most UK homes, these windows open outward on hinges and offer excellent ventilation
• Sash windows – Perfect for heritage properties, these windows slide vertically and have been popular for centuries
• Tilt and turn windows – Incredibly versatile, these open inward for safe cleaning or outward for full ventilation
• Bay windows – These project outward from your property, creating character and maximising natural light

Window materials

• uPVC windows – Affordable, energy efficient and available in numerous colours and styles. Minimal maintenance required
• Aluminium windows – Extremely strong, allowing larger panes of glass and offering a contemporary aesthetic
• Timber windows – Classic, sustainable and excellent at retaining heat. With proper maintenance, wooden frames last for decades

All our windows feature high-quality double glazing and the latest thermal technologies to maximise energy efficiency and thermal performance.

Frequently asked questions about winter window maintenance

What’s the best time to carry out window maintenance?

Autumn and early winter are ideal. You want to complete preventative maintenance before the worst weather arrives. You can carry out basic cleaning and checks at any time during the cold season.

How often should I clean my windows during winter?

We recommend cleaning windows at least once a month during the colder months. Use mild soapy water and a soft cloth, never use abrasive materials that could scratch your frames or glass.

Why is proper ventilation important during winter?

Proper ventilation helps control humidity levels and prevents condensation buildup. Even in winter, open windows briefly each day to allow fresh air circulation throughout your home.

What should I do if I notice water damage around my frames?

Contact us immediately for a professional inspection. Water damage can spread quickly, particularly around timber frames and door frames. Early intervention prevents costly repairs.

Who are Sherborne?

Sherborne Windows has served Surrey homeowners since 1990, building our reputation on family values of honesty, integrity and courtesy. Over 30 years, we’ve become one of the most trusted names in home improvement across Hampshire, Surrey, Berkshire and South-West London.

We offer comprehensive window solutions including uPVC windows, aluminium windows and timber windows in casement, sash, tilt and turn, and bay configurations. Our product range also extends to doors, conservatories and orangeries, giving you plenty of options for your home improvement project.

Our accreditations include FENSA approval, Assure Certified Installer status and membership of various industry bodies, ensuring all work meets the highest standards. We’ve won multiple industry awards including Best Installer – Residential in 2020 and have been finalists for Best Installer of the Year multiple times.

Operating within a one-hour radius of our Farnborough headquarters, we provide genuinely local service with showrooms in Windlesham, Farnborough, Hartley Witney and Sunningdale. Contact us on 01252 370917 or email enquiries@sherbornewindows.co.uk to discuss your window requirements.

Whether you’re dealing with draught problems, rising energy costs or simply want to improve your home’s appearance and security, our experienced team provides impartial advice to help you make the right decision for your Surrey home.