Window noise reduction is a top priority for many people who value peace and quiet from the outside world. But this can be difficult to achieve, especially for those in busy neighborhoods, nearby main roads, or just sensitive to noise.
Fortunately, investing in soundproof windows can be the solution to mitigate these disturbances. In this guide, we’ll explore the different strategies and considerations to help you soundproof your windows.
1. Double or Triple Glazing
While this first one might be the most significant investment, given the high upfront window replacement cost, it is also the most effective solution on our list. Double or triple glazing provides 2 or three layers of glazing that help protect against noise pollution.
The spacing between the panes is key to dampening soundwaves that hit your window. Double glazing alone can reduce noise transmission by up to 36 decibels. Triple glazing is considerably more effective, not just in terms of noise reduction, but also in terms of energy efficiency and security.
With that being said, triple glazing can cost up ot 50% more than double reglazing, and so is only recommended in environments that can really make use of its benefits.
2. Polyvinyl Butral (PVB)
This material is used as a type of acoustic glazing which can be inserted between glass panes to absorb and reflect sound in the sensitive 1000–3000 Hz range, reducing noise transmission by at least 15db, that’s a decrease of more than 50%.
3. Vacuum Sealed Windows
Advanced double or triple glazed windows can come vacuum sealed. This is when the small spacers between the panes of glass are sealed around the edges. This creates a vacuum in the space between the glass which is effective for eliminating heat loss as well as noise pollution.
4. Rubber Spacers and Weather Stripping
This is a low-cost, quick reward solution that’s easily found and easily applied. This rubber tape can be fitted in the seals around your window frames, creating a barrier that prevents noise from entering through the cracks around your window.
Similarly, weatherstripping, made of materials like foam and silicone prevents air gaps and enhances noise reduction by fitting it in window jambs. This is installed simply by cleaning the window jambs and securely attaching the strips.
5. Acoustic Caulk
This specialized product is another quick fix that can not only be applied to your windows, but across your entire home. Simply use the putty to fill any cracks or air gaps that might be letting in draughts or excess noise. You can also use it to fill similar gaps in your walls and floors.
6. Secondary Glazing
Double and triple glazed windows is not a viable option, perhaps because of the costliness or because you live in a protected building that doesn’t allow for a full window replacement. In this case, you should consider secondary glazing as a more affordable, less intrusive alternative.
Secondary glazing involves installing an additional external pane to the inside of the window. There are many types of secondary glazing, from glazing film, to full framed glazing panels.
For the most effective noise reduction, then you should consider installing a secondary window pane to create a barrier to noise transmission. Secondary glazing is usually temporary solutions as they can be easily removed.
7. Noise Reduction Curtains
Thick noise-canceling curtains contribute to noise reduction as well as offering effective levels of insulation to retain heat within your home. These have been reported to reduce noise pollution by up to 30 db, depending on the quality of the material used. Heavy black out curtains are the most effective option.
Measuring Window Noise Reduction
To assess the effectiveness of soundproof windows, the Sound Transmission Class (STC) rating comes into play. This rating, measured in decibels, indicates how much sound can travel through the window. For a noticeable improvement in noise reduction, an STC rating of 40 or above is recommended. Different window types have varying STC ratings:
- Single pane: 26-28
- Double pane: 26-32
- Soundproofed single pane: 48-54
- Soundproofed double pane: 48-54
It’s crucial to note that the STC rating for the glass may not accurately reflect the entire window’s rating. Some manufacturers may only display the glass rating, so it’s wise to seek clarification before making a purchase.
Impact of Soundproofing Windows
In conclusion, achieving a quieter home through soundproof windows involves a combination of materials, technologies, and installation techniques.
Significant improvement, as recommended by acoustic experts, requires a minimum reduction of at least 75%. Specialized windows, such as those found in recording studios, can achieve noise reduction up to 95%, although they may not be suitable for residential properties.
Wrapping Up
Whether you opt for triple glazed windows with enhanced soundproof features or invest in specialized acoustic glazing, each approach has its benefits.
Assess your specific needs, consider the noise levels in your environment, and consider which solution will work best for you and your home.
