NBS Source
Heritage Sash Windows - Single

Application

Suitable choice for replacement windows in listing buildings, whilst also suiting high-end architect-led new developments.

Description

Heritage sash windows constructed to match box sash windows crafted more than a century ago. The sash windows, with the classic weight-and-pulley mechanism, are a suitable choice for replacement windows in listing buildings, whilst also suiting high-end architect-led new developments.


Features and benefits:

  • Traditional putty is used externally to secure high-performance Slim Sightline double glazing.
  • Available single or double glazed, the authentic-looking Slim Sightline double glazing has good acoustic and thermal performance.
  • Solid glazing bars are supplied as standard.
  • Bespoke windows and doors are available; consult manufacturer for details.
  • Echo the style of historic windows.


General information

Color

Colour from RAL classic range - standard, dual finish or stain - optional.

-

Finish

Available in dual finish, RAL classic range and stain. Insert requirements.

-

Material

Timber

Wood

Shape

Rectangle

Uniclass

Pr_30_59_98_96 Wood window unitsPrimary

CAWS

L10/10 Wood windows

L10/210 Wood windows

Specification data - Wood window units Enhanced data

Dimensions and configurations

As drawing.

Insert reference.

As schedule.

Insert reference.

Product performance

-

Weather performance

-

UK exposure category

The window is fully weather sealed to BS EN 6375-1.

Air permeability

To BS EN 1026, Class 4.

Watertightness

To EN 1027, Class 4A.

Resistance to wind load

To EN 12211, Class C4.

Thermal

-

Whole window U-value

≥1.6 W/m²K.

To BS EN ISO 10077-1.

Frame

-

Profile

100 x 140 mm (lining width x frame depth), manufactured using mortise and tenon joints, glued and mechanically fixed.

Ventilator

Not required.

Concealed through frame head trickle ventilator.

Concealed through frame head trickle ventilator. 1700 mm², 4400 mm² or 5000 mm² air flow dependent on frame width.

Frame horns

Solid feature horns to top sashes are included as standard.

Not required.

Type H1.

Type H2.

Type H3.

Type H4.

Type H5.

Type H6.

Fixing features

A lockable Fitch fastener and two finger pulls to the bottom sash.

Sill projection

35 mm.

50 mm.

60 mm.

70 mm.

80 mm.

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Windowboard groove

Required.

Not required.

Solid bars

24 x 45 mm ovolo.

As drawing.

Child restrictor

Not required.

Angel lock.

Standard.

Traditional sash stop.

Sash

Sashes are hung on cords or chains, operating over pulleys and counterbalanced with lead weights.

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

Mullion/ transom

200 mm wide (130 mm for triple sash with fixed outer sash).

Staff bead

Timber.

MoistureContent

12–19% (wood).

Glazing bead

External traditional putty glazed.

Sill

Solid hardwood.

Applied finish

Three coat spray applied factory finish using water based micro-porous paint/ stain.

Dual finish.

Insert requirements.

RAL classic range.

Insert requirements.

Stain.

Insert requirements.

Wood species

Engineered Accoya.

Engineered European oak.

Engineered hardwood.

Engineered redwood.

Standard.

Digital objects

Platform Compatible Version Certified to
IFC
-

1

2.1
Revit

Revit 2017

1

2.1
Download now from NBS National BIM Library

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