SASH WINDOW DOUBLE GLAZING
At Timbawood, we specialise in bespoke timber windows tailored for period, listed and conservation properties. We manufacture and install throughout London and the Home Counties, and can supply nationwide.
As well as offering full replacement sash windows and timber casement windows, we can also fit new single or double glazed sashes/casements to the existing window frames, if the frames are in good enough condition to be saved.
As specialists in bespoke timber windows, we understand the importance of maintaining the aesthetic integrity of historic windows while improving energy efficiency. Our slimline double glazing, as thin as 11mm, significantly reduces heat loss by up to 77% compared to single glazing. This modern upgrade also minimises noise intrusion and enhances security without compromising on the original character of your windows. We offer a range of specialist options when it comes to double glazing for sash windows, including acoustic glass, laminated security glass and restoration glass for the authentic heritage look.
Part replacement and draught proofing sash windows is the ideal option to improve performance as well as preserve as much of the original architecture as possible. By only replacing the moving parts, it provides the most cost-effective option while minimising disruption to your property.
BENEFITS OF NEW DOUBLE GLAZED SASH WINDOWS
- Reduce heat loss and unwanted noise
- Eliminate draughts
- Ensure smooth running window mechanisms
- Improve energy efficiency
- Reduce dirt build-up
- Upgrade security
- Retain the original look and character of your period property
Our double glazed timber sash windows are handmade to order in our London factory. To speak to one of our experts about the options available, or to get a quote or arrange a visit to our showroom, please get in touch.
With Timbawood, you can always expect:
- Choice of the finest stable timbers including Accoya, Sapele and Oak
- Specialist glazing options including acoustic glass, laminated security glass, patterned glass and slimline double glazing that looks just like single glazing
- Choice of profiles, horns and mouldings to match your existing windows
- High quality hardware– High security fasteners, locks and restrictors
- Full factory spray finish with high performance microporous paint
- Full perimeter draught proofing
- Full design, supply and install service
We can also reglaze or replace windows with our thermally efficient single glazing, ‘Solo‘, which is 38% more effective at thermal insulation than single glazing.
DOUBLE GLAZED SASH WINDOW GALLERY
As specialists in period, conservation and listed properties, our traditional double glazed wooden sash windows have been approved for listed and conservation properties by planning officers in over 30 planning authorities and architects throughout London and the South East.
Please get in touch to speak to one of our specialists about draught proofing and double glazing for sash windows.
FAQs
Can sash windows be double-glazed?
Yes, it is possible to double-glaze original sash windows in historic properties, depending on the requirements of the planning authority. We offer a range of options including slim-profile double-glazing units, which look just like single glazing, and allow the windows to retain their original charm while gaining the added benefit of improved energy efficiency.
What are the advantages of double glazed sash windows over secondary glazing or modern UPVC alternatives?
When comparing wooden double glazed sash windows to secondary glazing or modern UPVC alternatives, they stand out in several key areas: They are made from durable timbers like Accoya, which are long lasting and low maintenance, have superior insulation, and are the most sustainable choice. By choosing wooden double glazed sash windows you are choosing authentic period design, which not only preserves property integrity, it also helps the value of your property and the character of your neighbourhood.
How effective is double glazing in reducing external noise compared to single glazing?
Double glazing is much better at reducing outside noise than single glazing. The two layers of glass with a space between them absorb sound waves more effectively. This makes rooms quieter, especially when using special acoustic glass.
How does double glazing impact ventilation inside the property?
Double glazing reduces natural airflow compared to single glazing because it creates a sealed barrier between the panes. However, modern double glazed sash windows include vents or openings to allow controlled airflow when needed. This helps maintain ventilation while still improving energy efficiency.
Do you need planning permission for double-glazed sash windows?
If you own a listed building, obtaining planning permission and consent is crucial when considering changes to features like windows and doors, including the installation of double-glazed sash windows. Stringent regulations are in place to safeguard architectural heritage.
Generally, permission is granted only when the windows are beyond economical repair, such as severe rot in the sash box. Mere age or single-glazing is not considered a valid reason for change; you must demonstrate the impracticality of repairing the original historical windows.
While converting from single to standard double glazing is usually not permitted, heritage ‘slimline’ double glazing might be acceptable for Grade 2 buildings. Any new features must adhere to heritage-appropriate glazing and closely resemble the original appearance.
Can you match the style of my existing windows?
Our skilled craftspeople, based in our London factory, specialise in creating made-to-measure sash or casement windows. To ensure an exact match to your existing windows, we use your original window as a template which then allows us to replicate the style and details of the original windows with precision.
Call us for our latest offers:
0208 893 4889
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