
Our timber sliding windows offer a practical, space-conscious solution for homes that need easy operation, clean lines and the warmth of handcrafted timber joinery.
Custom made to suit your project, they are well suited to both traditional and contemporary homes where you want a functional window style without losing character or craftsmanship.
Why choose a timber sliding window?
- Easy horizontal operation that suits a wide range of rooms
- A practical choice where outward-opening sashes are not ideal
- Custom sizing to suit your opening and design requirements
- Glazing options that can support comfort and energy efficiency
- Quality timber construction that adds warmth and lasting appeal
Made for everyday comfort and performance
A good sliding window should move smoothly, close properly and feel reliable in everyday use. Our timber sliding windows are made with that balance in mind, combining ease of operation with the visual appeal of bespoke timber joinery.
With the right glazing and sealing options, a sliding timber window can also support improved comfort, help reduce unwanted draughts and suit homes where practical ventilation and a clean look are both important.
Independently tested performance
A Townsend timber sliding window has been independently tested so you can review measured performance information with confidence.
What this means in simple terms
- Easy to operate: the tested sample recorded an opening force of 38 N to initiate movement and 45 N opening / 37 N closing to maintain movement, well within the required limits.
- Weather resistance: no water was observed during testing at 150 Pa.
- Strength: the tested sample showed no sign of collapse at +1500 Pa and -1500 Pa.
- Confidence: the tested sample achieved a Housing N3 rating.
- Independent verification: the results come from formal third-party testing, not just internal claims.
In practical terms, this means you can choose a timber sliding window style that combines ease of use with tested performance in areas that matter for day-to-day comfort and weather protection.
Why this is a smart choice for your home
- You get a practical sliding window style backed by independent testing.
- You get added confidence that the window has been assessed for operation, air infiltration, water penetration and structural strength.
- You can enjoy the natural character of timber while still considering comfort and performance.
- You have flexibility to match the window with glazing options suited to your project.
What was tested?
The independently tested sample was a sliding window measuring 1760 mm high x 1910 mm wide. It was tested for structural deflection, operating force, air infiltration, water penetration resistance and ultimate strength.
Technical summary
- Window type tested: Sliding window
- Sample size: 1760 mm high x 1910 mm wide
- Housing rating: N3
- Air infiltration recorded: 0.36 L/s.m2 at +75 Pa, 0.44 L/s.m2 at +150 Pa, -0.45 L/s.m2 at -75 Pa and -0.68 L/s.m2 at -150 Pa
- Water penetration result: No water observed at 150 Pa
- Water penetration note: Water was observed at 200 Pa and constituted failure at one location
- Ultimate strength result: No sign of collapse at +1500 Pa and -1500 Pa
- Operating force result to initiate movement: 38 N opening, against a 200 N maximum requirement
- Operating force result to maintain movement: 45 N opening and 37 N closing, against a 160 N maximum requirement
- Testing covered: Structural deflection, operating force, air infiltration, water penetration resistance and ultimate strength
- Independent test authority: Ian Bennie & Associates Pty. Ltd. with NATA-endorsed test reporting shown on the report
- Standard referenced in report: AS2047-1999 and AS4420-1996 as detailed in the report
Custom timber sliding windows made to suit your project
Whether you are building new, replacing old windows or working through a renovation, Townsend Joinery can custom make timber sliding windows to suit your project requirements. We can also discuss glazing choices, finish preparation and design details to help you balance style, comfort and performance.
If you would like advice on sizes, glazing options or the best timber window style for your home, contact Townsend Joinery and we will help you find the right fit.
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