Spiral Balance Vertical Sliding Sash Window
Verified by manufacturer 3 days ago
Vertical sliding sash window hung on spiral balances.
Application
For residential applications.
Description
Vertical Sliding Spiral Balance Sash Window – Traditional Aesthetics with Modern Innovation
Our vertical sliding spiral balance sash window seamlessly blends classic design with contemporary functionality. Utilising concealed spring mechanisms instead of traditional cords and weights, this window offers smooth, reliable operation while preserving the timeless elegance of period architecture. Ideal for heritage properties, conservation areas, or new builds seeking a traditional appearance with modern performance.
Key Features:
- Authentic Design: Crafted with traditional detailing, including optional sash horns and glazing bars, to match the character of period properties.
- Concealed Spiral Balances: Modern spring balances are hidden within the frame, eliminating the need for bulky weight boxes and allowing for slimmer profiles and increased natural light.
This window design offers a practical solution for those seeking the charm of traditional sash windows with the benefits of modern technology. Its slim profile and concealed mechanisms make it suitable for various applications, including renovations and new constructions.
General information
Color | Beige Clear Blue Brown Bronze |
Material | Timber Wood |
Shape | Rectangle Square |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Ten year |
Uniclass | |
CAWS | L10/210 Wood windows L10/10 Wood windows |
Specification data - Wood window units
Classification data | |
Third-party certification | BRE. |
Dimensions and configurations | Manufacturer guidanceInsert requirements or refer to a drawing or schedule. |
Product performance | |
Fire performance | |
Fire egress | Not required. Required. Manufacturer guidanceSubject to size of bottom sash. |
Weather performance | |
Air permeability | To BS EN 1026:2016, Class 4. |
Watertightness | To BS EN 1027:2000, Class 7A. |
Resistance to wind load | To BS EN 12211:2016, Class A5. |
Safety | |
Security level | Up to LPS 1175, SR2. Guidance for specification option: Subject to glass and hardware. |
Environmental | |
Acoustic performance rating | Up to 46 dB Rw. Guidance for specification option: Subject to glass specification. |
Thermal | |
Whole window U-value | 1.4 W/m2K or better. Guidance for specification option: Subject to glass specification. |
Frame | |
Wood species | European redwood. Engineered European redwood. Sapele hardwood. Engineered sapele hardwood. Accoya. Douglas fir. Oak. |
Chain of custody | FSC. |
Finish as delivered | Supplied primed with micro-porous paint ready for hand painting on site for traditional finish. Three coat spray-applied factory finish using water-based micro-porous paint. |
Preservative treatment to wood components | Triple action wood treatment. Guidance for specification option: Low odour solution based on micro-fine active technology with active fungacides, algaecides and Permethrin to actively kill and protect against wood rot, decay, fungi and wood-boring insects. |
Ventilator | Hidden trickle vents to head of box frame. Trickle vents fitted directly through sash. Guidance for specification option: Either top or bottom rails, subject to size. |
Frame horns | Sash horns not required. Sash horns required to both sashes. Sash horns required to top sash only. |
Glazing or infill | |
Requirements | 20 mm Double glass unit comprising 4 mm tough/ 12 mm argon/ 4 mm tough low e 1.2. 20 mm Double glass unit comprising 4 mm tough/ 12 mm argon/ 4 mm tough low e 1.0. 22 mm Double glass unit comprising 4 mm tough/ 14 mm argon/ 4 mm tough low e 1.2. 22 mm Double glass unit comprising 4 mm tough/ 14 mm argon/ 4 mm tough low e 1.0. 24 mm Double glass unit comprising 4 mm tough/ 16 mm argon/ 4 mm tough low e 1.2. 24 mm Double glass unit comprising 4 mm tough/ 16 mm argon/ 4 mm tough low e 1.0. 24.8 mm Double glass unit comprising 6.8 mm sound control/ 14 mm argon/ 4 mm tough low e 1.0. 26.8 mm Double glass unit comprising 6.8 mm sound control/ 14 mm argon/ 6 mm tough low e 1.0. 12 mm Double glass unit comprising 4 mm tough/ 6 mm krypton/ 4 mm tough low e 1.0. 14 mm Double glass unit comprising 4 mm tough/ 6 mm krypton/ 4 mm tough low e 1.0. 16.8 mm Double glass unit comprising 6.8 mm laminate/ 6 mm krypton/ 4 mm tough low e 1.0. Single glass 4 mm toughened. Single glass 6 mm toughened. Single glass 6.4 safety laminate. Single glass 6.8 mm sound control laminate. Single glass 8.8 mm sound control laminate. Single glass 3–4 mm restoration glass. Manufacturer guidanceNote: toughened glass where requested or required. |
Hardware | Spiral sash balances and polished brass sash catch, sash lifts, restrictor. Spiral sash balances and polished chrome sash catch, sash lifts, restrictor. Spiral sash balances and satin chrome sash catch, sash lifts, restrictor. Spiral sash balances and antique brass sash catch, sash lifts, restrictor. Manufacturer guidanceSpiral balance bespoke to suit size and weight of sashes. |
Operation | |
Type | Manual. |
Sustainability data
Material | Timber Wood |