Double Hung Unit Window Installation in Tahmoor
SCOPE OF WORK
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Supplied and installed a double hung unit using vertical grain Western Red Cedar. This unit was manufactured in the traditional system with weights and cords using high quality polished brass ball bearing pulleys and glazed with 6.38mm laminated Spotswood glass installed with silicone and Install linseed oil putty.
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Supplied and installed new architraves and new storm moulds.
Double Hung Unit Window Installation in Tahmoor
This double hung unit window installation in Tahmoor showcases Heritage Window Specialists’ commitment to traditional craftsmanship. Using premium vertical grain Western Red Cedar, authentic weights and cords, polished brass ball-bearing pulleys and laminated Spotswood glass, we supplied and installed a custom timber window that preserves the home’s heritage character while delivering modern durability, security, and smooth operation.
Double Hung Unit Window Installation in Tahmoor
When replacing timber windows in a heritage or character home, authenticity matters just as much as performance. Modern replacement windows may be easier to source, but they often fail to capture the proportions, craftsmanship, and functionality that make traditional timber windows such an important architectural feature.
For this double hung unit window installation in Tahmoor, Heritage Specialists supplied and installed a custom-built timber window that remained true to traditional construction methods while incorporating high-quality modern materials where appropriate. Every component was carefully selected to create a window that looks authentic, operates smoothly, and is built to provide decades of reliable service.
From the premium vertical grain Western Red Cedar frame to the traditional weights and cords system and handcrafted finishing details, this project demonstrates how heritage windows can be recreated without compromising on quality or historical accuracy.
Project Overview
This project involved the complete supply and installation of a custom double hung timber window for a property in Tahmoor.
The new window was manufactured using vertical grain Western Red Cedar, chosen for its natural durability, dimensional stability, and attractive timber grain. Unlike many modern alternatives, this timber performs exceptionally well in Australian conditions while providing the authentic appearance expected in heritage homes.
The completed installation included:
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Custom-manufactured double hung timber window
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Traditional weights and cords operating system
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High-quality polished brass ball-bearing pulleys
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6.38mm laminated Spotswood glass
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Silicone and traditional linseed oil putty glazing
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New timber architraves
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New storm moulds
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Professional installation and finishing
Every element of the installation was designed to complement the property’s existing architectural style while ensuring the new window performs reliably for many years.
Understanding Double Hung Windows
Double hung windows have been a defining feature of Australian heritage homes for generations.
Unlike fixed windows or sliding aluminium windows, a double hung window consists of two independently movable sashes that slide vertically within the frame. Traditionally, each sash is connected to concealed counterweights by cords running over pulleys inside the window frame.
This design provides several practical advantages.
Because both sashes can be opened independently, warm air naturally escapes through the top opening while cooler air enters through the bottom. This creates effective natural ventilation throughout the home without relying entirely on mechanical cooling.
The balanced weights also allow the window to remain open at virtually any height, making operation smooth and effortless.
Many original timber homes throughout Tahmoor continue to feature double hung windows because they combine functionality with timeless architectural appeal.
Manufactured Using Vertical Grain Western Red Cedar
The choice of timber is one of the most important aspects of any heritage window.
For this project, the new window was manufactured from vertical grain Western Red Cedar, a premium timber that offers several significant advantages over standard construction timbers.
Vertical grain cedar provides excellent dimensional stability, meaning it is less likely to twist, cup, or warp over time. This helps the sashes continue operating smoothly while maintaining tight weather seals.
Western Red Cedar is also naturally resistant to moisture and decay, making it particularly suitable for external window joinery.
Beyond its performance benefits, the fine, straight grain creates an elegant appearance that suits both traditional and contemporary heritage homes.
Its natural insulating properties also help improve thermal performance when compared with many alternative window materials.
Traditional Weights and Cords System
One of the defining characteristics of this installation is the use of a traditional weights and cords system.
Rather than replacing the original operating mechanism with modern spring balances, the window was manufactured using the same proven engineering that has been trusted for generations.
Each sash is connected to concealed counterweights through durable cords running over precision pulleys housed within the window frame.
As the sash moves, the counterweight balances its weight, allowing the window to open and close with minimal effort.
This traditional system provides several important benefits:
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Smooth, balanced operation
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Long service life
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Authentic heritage appearance
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Easy future maintenance
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Reliable everyday performance
For heritage homes, maintaining these traditional construction methods is often an important part of preserving the property’s original character.
High-Quality Polished Brass Ball-Bearing Pulleys
A traditional window is only as good as its hardware.
For this project, Heritage Specialists installed high-quality polished brass ball-bearing pulleys to ensure smooth and consistent sash movement.
Ball-bearing pulleys significantly reduce friction compared with older hardware, making the window easier to operate while reducing wear on the cords over time.
The polished brass finish also complements traditional timber joinery and provides an elegant heritage appearance that modern hardware simply cannot replicate.
Selecting premium hardware is an important part of ensuring every custom window delivers reliable long-term performance.
Laminated Spotswood Glass for Improved Performance
The window was glazed using 6.38mm laminated Spotswood glass.
Laminated glass consists of two panes bonded together with an interlayer, providing several practical advantages over standard glass.
Benefits include:
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Improved safety
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Enhanced durability
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Better acoustic performance
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Reduced risk of glass shattering
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Increased security
For many heritage properties located near busy roads or active neighbourhoods, laminated glass can also help reduce external noise entering the home.
Using laminated glass allows homeowners to enjoy improved everyday comfort while maintaining the traditional appearance of timber windows.
Traditional Glazing Methods
Authentic heritage windows require more than quality materials—they require traditional craftsmanship.
The glass for this project was installed using both silicone and traditional linseed oil putty, providing a durable weather-resistant seal while preserving the classic appearance associated with heritage joinery.
Linseed oil putty has been used in timber window construction for generations because it accommodates natural timber movement while creating an attractive finished profile around the glazing.
Combined with modern installation techniques, this approach delivers both durability and authenticity.
New Timber Architraves
To ensure a seamless finish, Heritage Specialists also supplied and installed new timber architraves.
Architraves provide the decorative trim surrounding the window opening while helping conceal construction joints between the wall and window frame.
Carefully matching the style and proportions of the existing interior detailing helps maintain visual consistency throughout the home.
Rather than appearing as a modern replacement, the completed installation looks as though it has always been part of the property.
New Storm Moulds
The installation also included new storm moulds, an important feature of traditional timber window construction.
Storm moulds help direct rainwater away from the window while protecting vulnerable timber joints from prolonged moisture exposure.
Besides improving weather resistance, these mouldings contribute to the authentic architectural detailing expected in heritage homes.
Attention to these seemingly small details is what separates true heritage workmanship from standard window replacement.
Professional Installation Matters
Even the highest-quality window requires expert installation to perform as intended.
Our experienced craftsmen carefully installed the completed unit to ensure accurate alignment, smooth operation, and a professional finish.
Every aspect of the installation was checked, including:
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Window frame alignment
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Sash movement
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Hardware operation
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Glazing integrity
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Weather sealing
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Finishing details
Proper installation ensures the window not only looks exceptional but continues operating reliably for many years.
Preserving Heritage Character
One of the primary goals of this project was preserving the home’s original architectural character.
Many older homes lose their heritage appeal when traditional timber windows are replaced with standard modern alternatives.
By manufacturing a custom window using authentic materials, traditional joinery methods, and heritage hardware, Heritage Specialists ensured the finished installation complements the property’s original design rather than competing with it.
This approach helps retain the charm, value, and historical integrity that make heritage homes so distinctive.
Why Quality Materials Make a Difference
Every material selected for this project was chosen for a specific purpose.
The cedar timber offers durability and stability.
The traditional weights and cords provide authentic operation.
The polished brass hardware delivers smooth performance.
The laminated glass improves comfort and safety.
The linseed oil putty maintains traditional appearance.
Together, these components create a timber window that balances heritage authenticity with long-term practicality.
Why Homeowners in Tahmoor Choose Heritage Specialists
Heritage Specialists has extensive experience manufacturing, restoring, and installing traditional timber windows across Sydney and surrounding regions.
We understand that every heritage property is unique, and every window must respect the architectural character of the building while meeting modern expectations for durability and functionality.
Our approach focuses on:
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Traditional joinery techniques
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Premium timber selection
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Authentic heritage detailing
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Skilled craftsmanship
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Quality materials
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Careful installation
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Long-term performance
Whether we are replacing a single window or completing a larger restoration project, our goal is always the same—to deliver timber windows that look authentic, operate beautifully, and stand the test of time.
Looking for Double Hung Window Installation in Tahmoor?
If you’re planning a double hung unit window installation in Tahmoor, Heritage Specialists can supply custom-built timber windows that faithfully replicate traditional designs while incorporating carefully selected modern materials for enhanced durability and performance.
From handcrafted timber joinery and authentic weights and cords to premium glazing and heritage detailing, every window we manufacture is built with quality, precision, and longevity in mind.
Whether your project involves replacing a deteriorated window, restoring the character of an older home, or installing new heritage-style timber windows, our experienced team can provide a solution that complements your property’s architecture and preserves its unique character for generations to come.