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Writer's pictureScott Carter

5 Common Winter Problems with Sash Windows and How to Fix Them

Winter can bring a variety of challenges around the home, and sash windows are no exception. Known for their charm and aesthetic appeal, these windows can bring about some specific issues that require attention. If you want to keep your home warm, cosy, and energy-efficient for the winter, follow our guide on overcoming this season's challenges.



1. Draught and Cold Air Infiltration


One of the most common winter complaints is feeling a chill near sash windows. Over time, gaps can form between the window frame and the sash, allowing cold air to seep in, making it difficult to keep your home warm.


Draught-proofing your sash windows is key to keeping your home warm over winter. Installing weatherstripping along the edges of the sash can help seal gaps and prevent draughts. Consider adding brush strips or foam strips to the sides of the window frame, which can significantly reduce air infiltration. For more long-term solutions, professional draught proofing may be required. For more information, read our blog on draught proofing sash windows.



2. Condensation Build-Up


Condensation is another common winter issue, particularly with single-glazed sash windows. As the warm indoor air meets the cold glass surface, the moisture in the air condenses, leading to potential problems like mould, mildew, and wood rot if left untreated.


Regularly wiping down windows can help, but it does not address the root cause. Upgrading to double glazing will better insulate the window, helping to reduce condensation. There are also ways you can help to reduce condensation from the inside, such as using a dehumidifier in the room and maintaining ventilation to reduce moisture build-up. For more information on how to reduce condensation on your sash windows visit our blog on Reducing Condensation.


A sash window with condensation on the glass

3. Stuck or Frozen Sashes


Cold, wet weather can cause wooden sash windows to expand and contract, leading to difficulty opening or closing them. In some cases, the moisture can freeze, especially around the edges of the sash, making it almost impossible to move the window.


Applying a silicone-based lubricant to the window tracks can help the sashes slide smoothly. If you encounter frozen sashes, carefully use a hair dryer to warm the edges of the window to loosen any ice. Avoid forcing a stuck window, as this can cause damage to the sash or frame.


A sash window with frost looking over a snowy landscape

4. Damage to Paint and Woodwork


Winter weather can be harsh on wood, causing paint to crack or peel and even leading to wood rot. Sash windows exposed to rain, snow, and freezing temperatures are more susceptible to moisture damage, which can impact their longevity.


Inspect and repaint sash windows with weather-resistant paint every few years to provide a protective barrier against the elements. During the winter, monitor for signs of rot or decay and address small issues before they become more extensive. If you notice severe rot, a professional restoration may be necessary to replace damaged wood. For more information on how to care for the wood of your sash windows read our blog on how to maintain wooden sash windows.


The image shows the hand of someone holding a paintbrush with white paint painting a sash window frame

5. Heat Loss and Energy Inefficiency


Single-glazed sash windows can lose significant heat during the winter months, which can increase your energy bills. Heat can escape more easily, leading to rooms becoming colder and your heating working harder to compensate in order to maintain a comfortable temperature.


For increased energy efficiency, consider secondary glazing or double glazing. Both options create an additional insulating barrier, helping to keep warm air inside and reducing your heating costs. If a full glazing upgrade isn’t in the budget, you can use thermal curtains to keep rooms warmer and reduce heat loss overnight. For more information, read our blog, looking into the energy efficiency of sash windows.


 

By taking the time to prepare and maintain your sash windows over the winter months, they can remain functional and beautiful all year round. Addressing these common winter issues, you can enjoy the charm and functionality of your sash windows while keeping your home cosy during the colder season.


If you're looking for expert sash windows installation or renovation, feel free to give us a call on 02476 466 870 or fill out our contact form.


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