Original timber windows were never designed with modern sealing systems. As a result, air, noise and dust pass freely through the natural gaps between sash and frame.
Our draught and acoustic sealing service upgrades your existing timber windows with discreet, high-performance seals, significantly improving thermal comfort and reducing external noise, while preserving the character of your home.
Our process involves removing the sashes and inspecting the box frame to ensure it is structurally sound and fit for purpose. We service all window mechanisms and make any necessary alterations to the sashes to allow for effective draught proofing. The sashes are then re-hung with new draught-proofing beading to improve performance and sealing.
We manufacture our draught-proof beading in-house using high-performance Q-LON polyurethane seals and solid hardwood only, with no finger joints, ensuring the system is durable and fully compliant with Australian building code AS2047.
We install high-performance polyurethane Q-LON seals by Schlegel to significantly improve the sealing and performance of existing timber windows. These seals have extremely low thermal conductivity, helping reduce heat transfer, and they recover their shape even after heavy compression, ensuring long-term effectiveness.
Compared with standard foam or brush seals, Q-LON seals last substantially longer and also provide improved acoustic performance over common extruded or brush sealing systems. When combined with upgraded glazing, they can deliver even greater improvements in thermal comfort and noise reduction within the home.
I am very happy with the work. Our old windows are renovated with draught seals and new putty. Now there’s no more draughts or rattles and even the external noise has been reduced. They are like new! The IWWS team provided a very knowledgeable service and were also respectful to the history of the house. Highly recommend them!
Therese Briggs
IWWS team did a great job servicing and sealing our old old sash windows making them safer and significantly reducing road noise. Very professional and efficient!
Elanor Swanson
Couldn’t be happier with the results of getting our old windows reglazed and acoustically sealed. Our home is now way more insulated and we’re not seeing the massive temperature swings we previously had. Also we’ve seen an improvement from reducing outdoor noise.
Leo Garcia
The team did an amazing job. They restored 3 of our timber double hung windows, sealed them and changed the glass and we are so happy with the end result. We used to have a fair bit of noise in our bedroom and now we can sleep sound at night. I would highly recommend their service.
Claudia Franchi
We had an excellent experience with the team, they repaired and sealed all of our windows and doors in our Federation home on a main road and the reduction in noise and draughts has been fantastic. They were professional, clean and great to deal with, so glad we went with them!
Rachel Kalman
Fantastic! Inner West Window Specialists beautifully restored some very old sash windows, and acoustically sealed several others to help tame the train and plane noise. Lovely guys. Thoughtful and genuine – the whole process was a pleasure.
Ame Luchetti
We get a lot of questions from homeowners who want better comfort, less noise, and improved performance from their existing windows—without replacing them. Below are some of the most common things we’re asked about our services and approach.
Draught sealing is a process that upgrades existing timber windows with discreet sealing systems to close the natural gaps between the sash and frame. These seals stop unwanted airflow, reduce outside noise and improve comfort inside the home while keeping the original timber windows intact.
Draught sealing can make a significant difference to the comfort of your home. By stopping uncontrolled airflow around the window sashes, it helps stabilise indoor temperatures, reduce outside noise and eliminate rattling in windy conditions. Many homeowners also notice reduced dust entry and improved energy efficiency.
No. Our draught sealing system is designed to be discreet and sympathetic to traditional timber windows. The seals are installed within the window system so the appearance and character of the window remain unchanged.
Yes. While draught sealing is primarily designed to stop air gaps, it also helps reduce noise entering through the window. By sealing the gaps between the sash and frame, it limits the pathways where sound typically enters the home, often resulting in noticeable reductions in traffic or street noise.
We remove the window sashes so they can be properly serviced and fitted with the draught sealing system. This allows us to inspect the box frame, service the window mechanisms and install precision-fitted seals before re-hanging the sashes for smooth operation.
We install high-performance polyurethane Q-LON seals manufactured by Schlegel. These seals have extremely low thermal conductivity, recover their shape even after heavy compression and last significantly longer than standard foam or brush seals. This ensures long-term performance and improved comfort.
Yes. Draught sealing is often completed alongside services such as reglazing, window restoration or acoustic glass upgrades. When combined with improved glazing, draught sealing can further enhance thermal comfort and reduce external noise inside the home.