Traditional Spring Sash Windows - Double

Application

External windows.

Description

Spring sash windows which offer a cost-effective alternative to traditional box sash designs. They deliver classic style, but incorporate a simpler, more compact and modern spring balance mechanism in place of weights and pulleys.

Double-glazed as standard, they are available with safety glass, obscured glass, acoustic glass or solar control glass. Triple glazing is also available to special order. Twin gasketing ensures reliable weather containment. The windows are suitable for mid-range new developments, as well as replacing classic windows on non-listed buildings.

Bespoke windows and doors are available; consult manufacturer for details.

General information

Size

As drawing

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As schedule

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Material

Timber.

Finish

Dual finish

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RAL classic range

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Stain

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Color

Many options available. RAL classic range

Shape

Rectangle

Special shapes available

Uniclass 2015

Pr_30_59_98_96 Wood window unitsPrimary

CAWS

L10/10 Wood windows

L10/210 Wood windows

Specification data - Wood window units Enhanced data

Standard

BS EN 6375-1: 2009

To EN ISO 10077-1:2006.

To ISO 9001.

Third-party certification

FSC Certified.

Dimensions and configurations

As drawings.

Insert requirements

As schedule.

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Product performance

-

Weather performance

-

UK exposure category

To BS 6375-1, 1600 Pa.

Air permeability

To BS 6375-1, Class 4.

Watertightness

To BS 6375-1, Class 4A.

Resistance to wind load

To BS 6375-1, Class A4.

Durability

-

Operation and strength characteristics

To BS 6375-2

Environmental

-

Background ventilation

Concealed trickle vent.

Acoustic performance rating

To BS EN ISO 717-1, ≤36 dB.

Thermal

-

Whole window U-value

To BS EN ISO 10077-1, ≥1.4 W/m²K.

Frame

-

Profile

bespoke profile options available

Ovolo.

Lambs tongue.

Wood species

Engineered Accoya.

European oak.

Engineered hardwood.

Engineered redwood.

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

Factory finished.

Preservative treatment to wood components

Preservative treated.

Ventilator

Trickle ventilator, EA 1700, 4400, 5000 mm²

Frame horns

Type H1 - H6

Glazing or infill

-

Standard

Relevant parts of BS EN 1279.

Requirements

24 mm double glass unit.

4 mm tough/ 16 mm argon/ 4 mm tough low-E - As standard.

24.8 mm sound control double glazed unit.

6.8 mm sound control laminated/ 14 mm argon/ 4 mm tough low-E.

Special order.

Hardware

Sashes are hung on spiral balances.

Operation

-

Type

Manual.

Electrical supply

None.

Execution

Project specific

Frame

55 x 160 mm (lining width x frame depth), manufactured using mortise and tenon joints, glued and mechanically fixed.

Sash

39 x 55 mm top rail and stiles, 90 x 55 mm bottom rail, 45 x 55 mm meeting rail.

Mullion

110 mm wide (70 mm for triple sash with fixed outer sash).

Sill section (height x depth)

54 x 160 mm.

MoistureContent

12–19%.

Glazing beads

Internally beaded.

Sill

Solid hardwood.

Environmental information

Country of material origin

Lithuania

Recyclability

Recyclable parts of product Timber, Glass, Gaskets

Digital objects

Platform Compatible Version Certified to
IFC
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Revit 2017

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