TIMBER SASH WINDOW RESTORATION IN DARLINGHURST
SCOPE OF WORK
- Supplied and installed new curved-top and curved-bottom timber sashes into the existing box frame, carefully matching the existing sash profiles.
- Supplied and installed new top and bottom timber sashes into the existing box frame, carefully matching the existing sash profiles.
- Glazed the new sashes with 8.5mm V-Lam Hush acoustic glass.
- Installed four (4) new wax-coated traditional cotton sash cords, with all sash weights correctly balanced to ensure smooth and reliable operation.
- Minor Timber Sill Repairs
- Supplied and installed new timber beading incorporating integrated draught and acoustic seals to improve insulation while maintaining smooth sash movement.
- Supplied and installed new sash window hardware.
BEFORE
AFTER
TIMBER SASH WINDOW RESTORATION AND ACOUSTIC GLAZING IN DARLINGHURST
This detailed sash window restoration project in Darlinghurst involved supplying and installing new timber sashes within the existing box frame while carefully matching the existing sash profiles.
The works combined detailed timber joinery with 8.5mm V-Lam Hush acoustic glass, new traditional cotton sash cords, balanced sash weights, minor timber sill repairs, integrated draught and acoustic seals, and new sash window hardware.
A significant amount of preparation was completed before installation, including joinery, machining, glazing and hardware preparation. The project required careful coordination across each stage to bring the new components together within the existing window frames.
CAREFULLY MATCHING THE EXISTING SASH PROFILES
One of the key requirements of this project was reproducing the profiles of the existing sash windows.
The new curved-top and curved-bottom timber sashes were manufactured to work within the retained box frame, with careful attention given to the existing shapes and detailing. Additional top and bottom sashes were also manufactured to match the established profiles.
This required detailed measurement, joinery and machining before the new components were ready for installation. Matching the existing profiles ensured that the replacement sashes were developed specifically for the window rather than relying on standard components.
DETAILED WORKSHOP JOINERY AND PREPARATION
A substantial amount of work took place before the installation began.
The timber components required detailed joinery and machining to produce the required sash profiles. The sashes were then prepared for the subsequent glazing, hardware and installation stages.
This preparation allowed the different components to be coordinated before they arrived on site. For a project involving multiple sash profiles, glazing, operating components and hardware, each stage needed to be completed with the following installation requirements in mind.
The work behind the scenes formed an important part of the finished result and demonstrates the level of preparation involved in detailed timber window restoration.
8.5MM V-LAM HUSH ACOUSTIC GLASS
The new sashes were glazed with 8.5mm V-Lam Hush acoustic glass.
The acoustic glass was incorporated into the newly manufactured timber sashes as part of the restoration works. Its installation was coordinated with the new joinery and the other components required for the completed window. The glazing therefore formed part of the overall sash construction rather than being treated as a separate addition after the timber work was completed.
NEW SASH CORDS AND BALANCED WEIGHTS
Four new wax-coated traditional cotton sash cords were supplied and installed as part of the restoration.
The sash weights were correctly balanced with the new sashes to support smooth and reliable operation. The cords and weights work together as part of the sash window’s operating mechanism, making correct balance an important part of the installation.
This work focused on the practical operation of the restored windows, complementing the detailed joinery and glazing work completed elsewhere in the project.
MINOR TIMBER SILL REPAIRS
The existing timber sill also required minor repairs.
These works were incorporated into the broader restoration rather than replacing the sill unnecessarily. Addressing the required areas allowed the existing timber component to remain part of the window while receiving the attention identified within the project scope.
The sill repairs were completed alongside the other restoration works before the project was finalised.
NEW TIMBER BEADING WITH INTEGRATED SEALS
New timber beading was supplied and installed with integrated draught and acoustic seals.
The seals were incorporated directly into the new beading to improve insulation while maintaining smooth sash movement. This was an important consideration for a sash window because the sealing solution needed to work alongside the movement of the sashes.
The new beading therefore served both a joinery and sealing function within the completed window assembly.
NEW SASH WINDOW HARDWARE
New sash window hardware was supplied and installed as part of the restoration.
The hardware completed the window assembly alongside the newly manufactured sashes, glazing, sash cords, weights and timber beading.
Rather than treating the hardware as an isolated finishing detail, it was incorporated into the overall restoration process so the various components could be completed as one coordinated window installation.
A COMPLEX RESTORATION FROM WORKSHOP TO INSTALLATION
This was a highly intricate restoration project that required considerable skill, precision and coordination from our team.
The work extended well beyond the installation itself. Joinery and machining had to be completed before the components could progress through glazing, hardware preparation and final installation.
The curved sash profiles added another layer of precision because the new components needed to correspond with the existing profiles and fit within the retained box frames.
The project is a strong example of how detailed timber window restoration involves coordination between workshop craftsmanship and on-site installation, with each stage contributing to the completed window.
THE COMPLETED DARLINGHURST SASH WINDOWS
The completed restoration brought together new timber sashes, acoustic glazing, traditional sash cords, balanced weights, timber sill repairs, integrated seals and new hardware.
The existing box frames were retained, while the new components were manufactured to suit the established sash profiles and window construction.
The finished windows combine traditional timber sash detailing with the specified acoustic glazing and sealing components, while the new cords, balanced weights and hardware complete the operating assembly.
PRESERVING TRADITIONAL SASH WINDOWS WITH CAREFUL UPGRADES
This Darlinghurst project demonstrates how an existing sash window can be restored through a combination of carefully manufactured timber components and selected upgrades.
The retained box frames provided the existing structure for the new sashes, while profile matching ensured the replacement joinery was developed specifically for the window. Acoustic glazing, draught and acoustic seals, new sash cords, balanced weights and hardware were then incorporated into the completed restoration.
The result brings together the traditional construction of the existing windows with the new components specified for this project.
TIMBER SASH WINDOW RESTORATION BY HERITAGE WINDOW SPECIALISTS
Heritage Window Specialists specialises in timber window repair, restoration, sash window work, acoustic glazing and draught proofing across Sydney.
Our approach considers the existing window as a complete system, with individual components assessed in relation to the joinery, glazing and operating mechanisms.
For detailed restoration projects, this can involve manufacturing new timber components, matching existing profiles, preparing glazing, repairing timber elements and installing sash cords, seals and hardware as required.
LOOKING FOR TIMBER SASH WINDOW RESTORATION IN DARLINGHURST?
If your timber sash windows require restoration, replacement components, acoustic glazing, draught sealing or repairs to their operating components, Heritage Window Specialists can assist with the assessment and required works.
Our team can discuss your existing windows and determine which components require repair, replacement or upgrading as part of a coordinated restoration project.