Verified by manufacturer 6 months ago
Standard double glazed
British Woodworking Federation
Certificate type
Health & Safety Accreditation
Certificate type
Spiral hung timber sash windows
Suitable for residential and commercial applications.
The Timber Spiral Hung Sliding Sash Window has been designed to meet the needs of the owners of period properties and for those who want windows with charm and warmth and an authentic feel.
The windows are designed to fit in locations where there isn't enough space for the traditional box sash unit.
Features and benefits:
Color | White Other Beige Black Blue |
Finish | Painted Stained Semi-gloss |
Material | Wood |
Shape | Rectangle Square Other |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 50 year |
Uniclass | |
CAWS | L10/10 Wood windows L10/210 Wood windows |
Standard | To EN 14351. |
Third-party certification | Buildcheck. |
Dimensions and configurations | Bespoke.Manufacturer guidanceRefer to a drawing or schedule. |
Product performance | |
Fire performance | |
Fire resistance | N/A |
Fire egress | Yes. |
Weather performance | |
UK exposure category | To BS 6375-1, 1600 Pa. |
Air permeability | To BS 6375-1, Class 2. |
Watertightness | To BS 6375-1, Class 5A. |
Resistance to wind load | To BS 6375-1, Class A4. |
Durability | |
Operation and strength characteristics | To BS 6375-2 |
Loadbearing capacity of safety devices | To BS 6180. |
Safety | |
User design standards | In accordance with BS 8213-1. |
Anti-ligature standard | N/A. |
Security level | To PAS 24. |
Environmental | |
Background ventilation | Yes. |
Acoustic performance rating | 29 dB.Guidance for specification option: Standard float glass insulating glass unit, 4 mm/6–20 mm/4mm. A range of acoustic insulating glass units are also available; consult manufacturer. |
Thermal | |
Whole window U-value | 1.7 W/m2K & 1.4 W/m2KGuidance for specification option: Timber frame system with 4-10-4 Low-E 0.05 uncorrected emissivity (St Gobain Planitherm Total+), 90% argon 10% air filled, low iron outer pane (St Gobain Diamant) glazing unit with Edgetech Superspacer Premium spacer bar with 5 mm hot melt butyl secondary seal. |
British Fenestration Rating Council Window Energy Rating | C.A. |
Frame | |
Standard | To BS EN 942. |
Profile | Pencil Bead.Bespoke. |
Wood species | Accoya/ Tricoya. |
Chain of custody | FSC. |
Appearance class | For opaque finishing: to BS EN 942, J10 for glazing beads, drip mouldings and the like. J40 or better for all other members. |
Finish as delivered | 3 no. coats of factory applied Sigma white semi gloss paint, 2 no. primer base coats, 1 no. top coat.Guidance for specification option: As standard. Bespoke.Guidance for specification option: Insert requirements. |
Preservative treatment to wood components | N/A |
Ventilator | Coastal TVA ventilator.Not required. |
Frame horns | Top sash: No horn.Top sash: 90 mm Victorian horn.Top sash: 70 mm short Victorian.Bottom sash: No horn.Bottom sash: 90 mm Victorian horn.Bottom sash: 70 mm short Victorian.Bespoke. |
Glazing or infill | |
Standard | Relevant parts of BS EN 1279. |
Requirements | 4 mm Planitherm Total + internal glass, 10 mm airspace, argon gas, 4 mm low iron external glass.Guidance for specification option: Glass thickness: 23 mm (maximum). External finish: Single pane with bonded bar, intermediate bars as necessary. |
Hardware | Brass - 1 no. fitch catch, 2 no. sash lifts, 1 no. rola lock set.Satin chrome - 1 no. fitch catch, 2 no. sash lifts, 1 no. rola lock set.Brushed chrome - 1 no. fitch catch, 2 no. sash lifts, 1 no. rola lock set.Polished chrome - 1 no. fitch catch, 2 no. sash lifts, 1 no. rola lock set.Antique brass - 1 no. fitch catch, 2 no. sash lifts, 1 no. rola lock set.Special order.Guidance for specification option: Consult manufacturer for options and insert requirements. Manufacturer guidanceA full range of sash window ironmongery and finishes available at extra cost. Consult manufacturer. |
Operation | |
Type | Manual. |
Electrical supply | N/A. |
Fixing features | N/A. |
Execution | Fixing of wood frames |
Weather seal (factory applied) | Full weatherstripping integrated into the sashes frames and beading. |
Glazing bars | 16 mm Ovolo Bonded. 20 mm Ovolo Bonded. 24 mm Ovolo Bonded. 30 mm Ovolo Bonded. 24 mm Ovolo Heritage. |
Design | 1 over 1. 2 over 1. 2 over 2. 3 over 3. 6 over 6. |
Contains Red List materials | No |
Country of material origin | New Zealand |
Country of product manufacture | United Kingdom |
Material | Wood |
Manufacturing plant location | |
Recyclability | Yes |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
Accoya Approved Manufacturer
Brochure: The Sash Window Workshop
FENSA Certificate
Listed Building and Conservation Area Guide
Supply Only Delivery, Storage and Fitting Guidelines
Supply Only Guarantee
Supply and Fit Guarantee and Maintenance Guidelines
Accoya: Sustainable and Durable Timber
Sash Window Technical Guide
Timber Casement Window - Wooden casement window
Timber Casement Window – Heritage range - Timber Casement Window
Timber Cord Hung Sliding Sash Window - Timber sash windows
Traditional Timber Bay Sash Window - Bay sash window
Traditional Timber Sliding Box Sash Window – Heritage range - Timber Sash Windows