
Traditional Range Timber Sash Windows – Spiral Balance
Timber Sash Windows – Spiral Balanced
Sliding Sash Spiral Balance
Traditional look, modern operation – The Traditional Sliding Sash Spiral Balance window is a vertical sliding design, with a tensioned spring, providing a lifting mechanism to operate the window. The Sliding Sash Spiral Balance window incorporates all the traditional features of an original box sash window with a modern method of operation.
The Traditional Sliding Sash Window is suitable for installation in conservation areas and is most commonly chosen for prestigious new build mansions or refurbishment properties with a stone or rendered finish.
Weather Testing
The Bereco Traditional Spiral Balance Sliding Sash has been independently tested to BS6375 by certification body BM Trada rating weather performance, achieving the highest possible classification.
The Bereco Sliding Sash design achieved a UK Exposure Category of 2000, 600pa (class 3) for Air permeability, 250pa water tightness and 0.8 air leakage
Traditional Wooden Sliding Sash Windows
Standard Design Features
The Traditional Spiral Balance Sliding Sash window ensures all the period features of the original sash window are retained, whilst incorporating the latest advances in timber window technologies, security and performance.
Traditional aesthetic features including an external putty bead design and Internal Ovolo moulding on the sash and frame replicate the elegant profiling of period windows.
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Optional Design Features
The Slim Frame Sections of the traditional timber Sliding Sash window optimises glass areas to retain period styling and specialist horn details; exclusive to the Traditional range allows sash locking when horns are specified to lower sashes.
Inline balances, concealing the spiral balance operation are incorporated into the Traditional Sliding Sash Spiral Balance Window design as standard. The balances are adjustable and available in four colour options; white, brown, cream and black .
The Angel lock is fitted as standard to set the night vent position, restrict the lower sashes and provide an additional locking point for child safety.
A popular window specification chosen to retain the traditional look of wooden Sliding Sash Windows is a white colour paint finish, polished brass Ironmongery and 16mm Georgian Lambs Tongue bars. To create a truly unique finish to your project, why not choose a curved window head with a sunburst bar arrangement.
Traditional Spiral Balance Sash Gallery…
Standard Design Features
Semi-Concealed Inline Spiral Balance (Spring Loaded) | ![]() |
Horns to Top Sash | ![]() |
Concealed Trickle Vent | ![]() |
Angel Ventlock & Strikeplate | ![]() |
Complete Gasket Seal – Sliding Sash | ![]() |
Groove for Window Board | ![]() |
Scallop in Jamb | ![]() |
Timber Parting Bead | ![]() |
Timber Baton Rods | ![]() |
Optional Design Features
Horns to Top & Bottom Sash | ![]() |
Horns to Bottom Sash | ![]() |
No Horns | ![]() |
Deep Bottom Rail | ![]() |
Shaped Head | ![]() |