So you’ve recently installed double-glazed windows in your home, and now you’re wondering if you can take it a step further and draught proof them too. Well, the answer is a resounding yes! Draught proofing your double glazed windows is not only possible but also a practical and cost-effective way to enhance the energy efficiency of your home. By sealing any gaps and preventing cold air from seeping in, you can enjoy a cozier living space while saving on heating bills. In this article, we will explore the benefits of draught proofing double glazed windows and provide you with some helpful tips to get started.
What is draught proofing?
Definition of draught proofing
Draught proofing is the process of sealing gaps and cracks in windows and doors to prevent cold air from entering and warm air from escaping a building. It involves identifying areas where air leakage occurs and applying appropriate materials to effectively seal these gaps. Draught proofing is essential for maintaining a comfortable indoor temperature, reducing energy consumption, and preventing the entry of dust, drafts, and noise.
Why is draught proofing important?
Draught proofing is important for several reasons. Firstly, it helps to minimize heat loss, which can lead to a significant reduction in energy consumption and heating bills. By preventing cold drafts from entering a room, draught proofing ensures that the desired indoor temperature is maintained consistently.
Secondly, draught proofing improves the overall comfort of a space by reducing drafts and eliminating cold spots. This is particularly beneficial during colder seasons when chilly air can make a room uncomfortable and unpleasant. Draught proofing also helps to prevent the entry of dust, pollen, and outdoor pollutants, improving indoor air quality.
Furthermore, draught proofing can contribute to noise reduction. By sealing gaps in windows and doors, it reduces the intrusion of outdoor noise, creating a quieter and more peaceful living environment.
Overall, draught proofing offers numerous advantages, including energy efficiency, improved comfort, better indoor air quality, and noise reduction.
Understanding double glazed windows
What are double glazed windows?
Double glazed windows are windows that consist of two glass panes separated by a layer of air or gas, typically argon or krypton. These windows are designed to provide better insulation and energy efficiency compared to single glazed windows, thanks to the insulating properties of the trapped air or gas between the panes.
How do double glazed windows work?
Double glazed windows work by creating a barrier between the indoor and outdoor environments. The insulating layer of air or gas between the glass panes helps to minimize heat transfer, preventing the loss of warm air during colder months and the entry of hot air during warmer months. This thermal insulation makes double glazed windows more efficient at maintaining a consistent indoor temperature.
In addition to thermal insulation, double glazed windows also provide better sound insulation compared to single glazed windows. The multiple layers of glass and the air or gas between them absorb and dampen sound waves, reducing noise transmission from outside to inside.
Benefits of double glazed windows
Double glazed windows offer several benefits. Firstly, they provide improved thermal insulation, resulting in reduced heat loss and lower energy bills. By keeping the indoor temperature stable, they minimize the need for excessive heating during colder months and reduce the load on cooling systems during hotter months.
Secondly, double glazed windows offer enhanced sound insulation, creating a quieter and more peaceful living environment. They reduce external noise, such as traffic or neighborhood disturbances, making it easier to relax and concentrate indoors.
Furthermore, double glazed windows increase the security of a building. The multiple layers of glass make it harder for potential intruders to break in compared to single glazed windows.
Lastly, double glazed windows improve the overall value and aesthetics of a property. They are considered a desirable feature in homes and can increase the curb appeal, making a property more attractive to potential buyers.
Common issues with double glazed windows
Condensation
Condensation is a common issue with double glazed windows, particularly in colder climates or during periods of high humidity. The temperature difference between the warm indoor air and the cold glass surface can lead to the formation of condensation on the interior side of the window.
While a certain amount of condensation is normal, excessive condensation can be problematic. It can cause mold and mildew growth, discoloration of the window frame, and even damage to the surrounding walls if left unaddressed.
Air leakage
Air leakage is another common issue with double glazed windows. Over time, the seals around the glass panes may deteriorate or become damaged, allowing air to infiltrate the space between the panes. This can result in drafts, heat loss, and reduced energy efficiency.
Air leakage can also lead to the entry of dust, pollen, and other outdoor pollutants, reducing indoor air quality and potentially causing allergies or respiratory issues.
Noise reduction
While double glazed windows provide better sound insulation compared to single glazed windows, they may still allow some noise transmission, especially if they are old or poorly maintained. This can be a concern for those living in noisy urban areas or near busy roads.
To ensure optimal performance and address these common issues, it is important to consider draught proofing double glazed windows.
The concept of draught proofing double glazed windows
Can double glazed windows be draught proofed?
Yes, double glazed windows can be draught proofed. Draught proofing is a viable option even for windows that have already been double glazed. By sealing any gaps or cracks in the window frames or between the glass panes, it is possible to enhance the insulation properties of double glazed windows and further reduce heat loss, air leakage, and noise transmission.
How does draught proofing work with double glazed windows?
Draught proofing with double glazed windows involves identifying areas where air leakage occurs and applying appropriate sealing materials. By sealing the gaps around the window frames, windowsills, and where the windows meet the surrounding walls, it is possible to reduce air leakage and improve the overall energy efficiency of the windows.
Draught proofing can be done using various methods, such as weather stripping, caulking or sealant, and secondary glazing. These methods effectively seal the gaps and cracks, preventing drafts, reducing noise transmission, and improving indoor comfort.
Benefits of draught proofing double glazed windows
Draught proofing double glazed windows offers several benefits. Firstly, it enhances the energy efficiency of the windows, reducing heat loss and lowering energy bills. By keeping the warm air inside during winter and preventing the entry of hot air during summer, draught proofing helps maintain a comfortable indoor temperature and minimizes the load on heating and cooling systems.
Secondly, draught proofing improves the overall comfort of a space by eliminating drafts and cold spots near windows. This ensures a more pleasant living environment and reduces the need for additional heating or cooling measures.
Furthermore, draught proofing helps to reduce noise transmission, creating a quieter indoor space. This is particularly beneficial for those living in noisy areas or near busy roads.
By enhancing the insulation properties of double glazed windows, draught proofing also contributes to better indoor air quality. It prevents the entry of dust, pollen, and outdoor pollutants, creating a healthier and more comfortable living environment.
Methods of draught proofing double glazed windows
Weather stripping
Weather stripping is a commonly used method for draught proofing double glazed windows. It involves applying strips of material, such as rubber, foam, or brush, around the window frames to seal any gaps or cracks. Weather stripping is effective at reducing air leakage and preventing drafts, while still allowing the windows to open and close smoothly.
Caulking or sealant
Caulking or sealant is another method for draught proofing double glazed windows. It involves applying a flexible sealant material, such as silicone or acrylic, to seal gaps and cracks in the window frames or between the glass panes. Caulking or sealant is particularly effective for smaller gaps or areas that cannot be sealed with weather stripping.
Secondary glazing
Secondary glazing is a more comprehensive method of draught proofing double glazed windows. It involves installing an additional layer of glass or acrylic panels on the interior side of the existing double glazed window. This creates an extra barrier against air leakage and further enhances thermal and sound insulation.
Secondary glazing can be particularly beneficial for older or inefficient double glazed windows that may have significant gaps or inadequate seals. It offers a more robust solution for draught proofing and can significantly improve energy efficiency and comfort.
Weather stripping for draught proofing
Types of weather stripping
There are various types of weather stripping materials available for draught proofing double glazed windows. The choice of weather stripping depends on the specific needs and requirements of the window.
- Rubber weather stripping: This type of weather stripping is flexible and durable, making it suitable for sealing larger gaps and irregularly shaped window frames. It can be easily installed by inserting it into a groove or attaching it with adhesive.
- Foam weather stripping: Foam weather stripping is soft and compressible, making it ideal for filling smaller gaps and irregular surfaces. It is available in self-adhesive strips or can be attached with adhesive or nails.
- Brush weather stripping: Brush weather stripping consists of bristles or fibers attached to a strip or a flexible carrier. It is effective at sealing gaps while still allowing smooth opening and closing of windows. Brush weather stripping is commonly used for sliding windows or casement windows.
Installation process
The installation process for weather stripping varies depending on the type of weather stripping used. However, the general steps involved in installing weather stripping for draught proofing double glazed windows are as follows:
- Clean the window frames thoroughly to ensure proper adhesion of the weather stripping.
- Measure the dimensions of the gaps that need to be sealed and cut the weather stripping material accordingly.
- Apply the weather stripping to the gaps, ensuring a tight and secure fit. For self-adhesive weather stripping, simply peel off the backing and press it firmly onto the window frame. For other types of weather stripping, use adhesive or nails as recommended.
- Test the windows by opening and closing them to ensure that the weather stripping does not interfere with their operation.
Effectiveness and lifespan
Weather stripping is an effective method of draught proofing double glazed windows. When installed properly, it can significantly reduce air leakage, eliminate drafts, and improve energy efficiency.
The lifespan of weather stripping depends on factors such as the quality of the material used, the frequency of use of the windows, and the prevailing weather conditions. Generally, weather stripping may last several years before needing replacement. Regular inspection and maintenance can help identify any worn-out or damaged weather stripping and ensure its effectiveness.
Caulking or sealant for draught proofing
Types of caulking or sealant
Caulking or sealant is another method commonly used for draught proofing double glazed windows. There are different types of caulking or sealant materials available, each with its own characteristics and applications.
- Silicone caulking: Silicone caulking is a flexible and durable sealant that adheres well to various surfaces, including glass and metal. It is resistant to moisture and temperature changes, making it suitable for both interior and exterior applications. Silicone caulking can withstand movement and is ideal for sealing joints and cracks in double glazed windows.
- Acrylic caulking: Acrylic caulking is a paintable sealant that is easy to use and clean up. It is available in different colors to match the window frames and can be used for both interior and exterior applications. Acrylic caulking is less flexible than silicone and may not be suitable for areas with significant movement.
Application process
The application process for caulking or sealant involves the following steps:
- Clean the window frames thoroughly to ensure proper adhesion of the caulking or sealant.
- Prepare the caulking gun by cutting the tip of the tube at a 45-degree angle, leaving a small opening.
- Load the caulking tube into the caulking gun and apply the caulking or sealant along the gaps and cracks in the window frames or between the glass panes. Apply a steady and even bead of caulking, ensuring that the gaps are completely filled.
- Smooth the caulking using a caulk smoother or a wet finger to create a neat and even finish. Remove any excess caulking or sealant.
- Allow the caulking or sealant to cure according to the manufacturer’s instructions before testing the windows.
Pros and cons
Caulking or sealant offers several advantages for draught proofing double glazed windows:
- It can effectively seal gaps and cracks, preventing air leakage and reducing drafts.
- Caulking or sealant is relatively easy to apply and can be used for both interior and exterior applications.
- It provides a more permanent solution compared to weather stripping, as it adheres directly to the window frames.
- Some types of caulking or sealant, such as silicone, are resistant to moisture and temperature changes, making them suitable for various climates.
However, caulking or sealant also has a few limitations:
- It may not be suitable for areas with significant movement, as it can crack or detach over time.
- Caulking or sealant may require regular inspection and maintenance to ensure its effectiveness.
- It may not be as easy to remove or replace compared to weather stripping if it becomes worn out or damaged.
Considering the specific needs and conditions of the windows, the choice between weather stripping and caulking or sealant can be made to ensure effective draught proofing.
Secondary glazing for draught proofing
What is secondary glazing?
Secondary glazing is a method of draught proofing that involves installing an additional layer of glass or acrylic panels on the interior side of existing double glazed windows. The secondary glazing creates an extra barrier against air leakage, improving thermal insulation and further reducing drafts and noise transmission.
Secondary glazing is a versatile and effective solution for draught proofing, particularly for older or inefficient double glazed windows. It offers a more comprehensive approach to enhancing energy efficiency and comfort.
How does it work for draught proofing double glazed windows?
Secondary glazing works by creating an additional layer of insulation and sealing any gaps or cracks in existing double glazed windows. The secondary glazing panels are custom-made to fit the dimensions of the windows and are installed on the inside, creating a secondary barrier against air leakage.
The gap between the existing double glazed window and the secondary glazing panel provides an extra layer of thermal insulation, preventing heat loss and reducing drafts. It also helps to further reduce noise transmission, creating a quieter living environment.
Secondary glazing can be installed as fixed panels, hinged panels, or sliding panels, depending on the specific requirements and preferences. It is a non-intrusive solution that does not require the removal or replacement of the existing double glazed windows.
Costs and benefits
The costs of secondary glazing depend on factors such as the size and number of windows, the chosen materials, and the complexity of the installation. Generally, the cost of secondary glazing is lower than replacing the entire double glazed window system.
The benefits of secondary glazing for draught proofing double glazed windows are significant. Firstly, it provides enhanced thermal insulation, reducing heat loss and lowering energy consumption. This can lead to substantial savings in heating and cooling bills.
Secondly, secondary glazing improves the overall comfort of a space by eliminating drafts and cold spots near windows. It creates a more consistent indoor temperature and reduces the need for additional heating or cooling measures.
Furthermore, secondary glazing offers effective noise reduction. The additional layer of glass or acrylic panels helps to dampen sound waves, minimizing the intrusion of external noise.
Secondary glazing also has the advantage of being reversible. If desired, it can be removed without damaging the existing double glazed windows, allowing for easy restoration or future changes.
Considerations before draught proofing double glazed windows
Assessment of window condition
Before embarking on draught proofing double glazed windows, it is important to assess their condition. Examine the window frames, seals, and glass panes for any signs of damage or deterioration. Check for gaps, cracks, or areas of air leakage that need to be addressed.
If the windows are in good condition, draught proofing can be done with relatively straightforward methods such as weather stripping or caulking. However, if the windows are old, inefficient, or have significant issues, it may be advisable to consider secondary glazing or consult a professional for a more comprehensive solution.
Professional assistance
While some methods of draught proofing, such as weather stripping and caulking, can be done as do-it-yourself projects, it may be beneficial to seek professional assistance. A qualified professional can assess the specific needs of the windows, recommend suitable methods and materials, and ensure proper installation.
Professional assistance is particularly important when considering secondary glazing, as it involves precise measurements, customization, and expert installation. Improper installation of secondary glazing panels can compromise their effectiveness and lead to air leakage or other issues.
Compatibility with warranty
Before draught proofing double glazed windows, it is important to consider the impact on any existing warranties or guarantees. Some window manufacturers may have specific guidelines or restrictions regarding modifications or alterations to their products. Contact the manufacturer or consult the warranty documentation to ensure that draught proofing does not void any existing warranties.
Conclusion
Taking action to draught proof double glazed windows can result in significant benefits in terms of energy efficiency, comfort, and noise reduction. Draught proofing addresses common issues such as condensation, air leakage, and noise transmission, improving the overall performance of double glazed windows.
Methods such as weather stripping, caulking or sealant, and secondary glazing offer effective solutions for draught proofing. Weather stripping is an accessible and cost-effective method, while caulking or sealant provides a more permanent solution. Secondary glazing offers a comprehensive approach, particularly for older or inefficient double glazed windows.
Before draught proofing, it is important to assess the condition of the windows and consider professional assistance if needed. Additionally, ensure that any modifications are compatible with existing warranties.
By draught proofing double glazed windows, you can enjoy the benefits of improved energy efficiency, enhanced comfort, better indoor air quality, and reduced noise transmission. Take the necessary steps to create a more comfortable and efficient living environment.
