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Description

High performance vertical sliding box sash windows with slim double glazing period sightlines and details.

General information
Finish

Colour from RAL classic range

Insert requirement.

Colour match

Insert requirement.

Dual finish

Insert requirement.

Three coats of spray applied water based micro-porous white paint (RAL 9003)

Uniclass 2015
Wood window units (Pr_30_59_98_96)Primary
Specification data - Wood window units
Product Reference

Classic Box Sash Window

Timber

Engineered Accoya

Recommended in coastal areas.

Engineered clear grade knot free Siberian Larch frame and sashes with Accoya internal/external liners and midrail with hardwood Sapele sill

As standard.

Engineered Hardwood Red Grandis

Mullion section

Not required

98 mm

Up and over cord for triple sash only.

162 mm

220 mm

Sill section (h x d)

68 x 163 mm

90 x 163 mm

Sill projection

35 mm

60 mm

85 mm

110 mm

140 mm

90 x 163 mm sill required.

Flush

Horns

Not required

As drawing

External liner moulding

Not required

Bead mould

Ovolo mould

Horns

Required

Not required

Finish

Colour from RAL classic range

Insert requirement.

Colour match

Insert requirement.

Dual finish

Insert requirement.

Three coats of spray applied water based micro-porous white paint (RAL 9003)

Windowboard groove

Not required

Required

Glazing bars and sash internal perimeter profile

24 mm Lambs Tongue

24 mm Ovolo

Glass units and whole product U-values/ G-values

14 mm Double glass unit comprising 4 mm Tough / 6 mm Krypton / 4 mm Tough Planitherm One

As standard. Whole window U-value: 1.7 W/m²K / G-value: 0.52.

14.8 mm Sound Control Double glazed unit comprising 6.8 mm Sound Control Laminated/ 4 mm Argon/ 4 mm Tough Planitherm One

Whole window U-value: 2.0 W/m²K / G-value: 0.48. Whole window acoustic performance RW (C;Ctr) = 36db (-1;-4).

Perimeter spacer bar

White aluminium

14 mm glass units only.

Silver/ black aluminium

14mm & 14.8mm glass units.

Ironmongery

Antique brass

Sash catch, sash lifts, sash lock, sash pulley.

Brass

Sash catch, sash lifts, sash lock, sash pulley.

Oil rubbed bronze

Sash catch, sash lifts, sash lock, sash pulley.

Polished chrome

Sash catch, sash lifts, sash lock, sash pulley.

Satin chrome

Sash catch, sash lifts, sash lock, sash pulley.

Nickle

Sash catch, sash lifts, sash lock, sash pulley.

Selected Croft ironmongery with bespoke finish

Insert requirement.

Trickle ventilation

Not required

Concealed through frame head trickle ventilator (reduced EA)

Trickle ventilator (4600 mm EA) - Surface mounted canopy

Child restrictor

Required

Not required

Standard product features

Frame section:

110 x 160 mm (liner x depth).

Sash section:

64 x 57 mm (top/ side rail x depth) with 94 mm bottom rail and 43 mm midrail.

Timber:

Engineered clear grade knot free timber, all FSC certified. Chain of Custody can be specified.

Operation:

Pre-stretched nylon cords with sash weights and heavy duty pulley wheels.

Finish:

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

Weatherseal:

Schlegel Aquamac AQ109 & Sashglide® acoustic weatherpile.

Glazing:

External putty glazed in accordance with Glass and Glazing Federation requirements.

Performance:

  • Air permeability: EN 1026:2000 Class 3.
  • Water tightness: EN 1027:2000 Class 7A.
  • Wind resistance: EN 12211:2000 Class C5.

Product Options

Type:

Include specific frame dimensions, configuration and glazing bar designs with specification. Provide drawings if available.

Feature windows:

Shaped frames can be made to Mumford & Wood sections and details.

Third party certifications
  • BS EN 644
  • Timber FSC Certified
  • BS EN 6375 : Parts 1, 2, 3
  • ISO 9001
  • ISO 14001
  • British Woodworking Federation Member
  • Timber Window Accreditation Scheme Approved Manufacturer
  • Wood Window Alliance Founding Member
  • CE Marked
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