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Conservation Spring Sash Window

Third party certifications:
  • QA Certificate

    Certificate type

  • BSI Kitemark

    Certificate type

Mumford & Wood Ltd

High performance spring balanced operated sash window.

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+44 (0)1621 818155 www.mumfordwood.com
Description

High performance vertical sliding sash windows with period sightlines and details, in module sizes or made to measure.

General information
Finish

Colour from RAL classic range

Insert requirement.

Colour match

Insert requirement.

Dual finish

Insert requirement.

Three coats of spray applied micro-porous M and W stain

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

Color

All RAL colours and stain options

Material

Wood

WarrantyDescription

Timber: 30; Glazing, ironmongery and seals: 10; Paint finish: 10; Stain finish: 5

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

Conservation Spring Sash Window

Timber

Engineered Accoya

Recommended for 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 sections

78 mm

98 mm

Sill section (height x depth)

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 section required.

Flush

Horns

Not required

As drawing

External liner moulding

Bead mould

Ovolo mould

Not required

Horns

Not required

Required

Finish

Colour from RAL classic range

Insert requirement.

Colour match

Insert requirement.

Dual finish

Insert requirement.

Three coats of spray applied micro-porous M and W stain

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

Windowboard groove

Required

Not required

Frame profile moulding

Lambs Tongue

Ovolo

Square

Internal Glazing Bars and/or Perimeter Bead

18 mm Fine Lambs Tongue

18 mm Ovolo

18 mm Square

22 mm Lambs Tongue

22 mm Ovolo

22 mm Square

28 mm Ovolo

External Glazing Bars

18 mm chamfered putty bar

22 mm chamfered putty bar

28 mm chamfered putty bar

6 mm ‘antiqued’ lead to internal and external faces of the outer pane

9 mm ‘antiqued’ lead to internal and external faces of the outer pane

12 mm ‘antiqued’ lead to internal and external faces of the outer pane

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

24 mm double glass unit comprising 4 mm Tough / 16 mm Argon / 4 mm Tough Planitherm One

Whole window U-value: 1.3 Wm²K / G-value: 0.52.

24 mm double glass unit comprising 4 mm Tough / 16 mm Argon / 4 mm Tough Planitherm Total+

Whole window U-value: 1.4 W/m²K / G-value: 0.73.

24.8 mm sound control double glazed unit comprising 6.4 mm sound control laminated/ 14 mm Argon/ 4 mm Tough Planitherm Total+

Whole window U-value: 1.5 W/m²K / G-value: 0.66. Whole window acoustic performance RW (C;Ctr) = 36db (-2;-5).

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

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

14.8 mm sound control double glazed unit comprising 6.8 mm laminated / 4 mm Krypton / 4 mm Toughened Planitherm One

Whole window U-value: 1.9 Wm²K / G-value: 0.48.

Perimeter/Integral spacer bar

Black warm edge perimeter spacer and integral glazing bars within unit cavity

24 & 24.8 glazing.

White warm edge perimeter spacer and integral glazing bars within unit cavity

24 & 24.8 glazing.

Black aluminium perimeter spacer

14 & 14.8 glazing.

White aluminium perimeter spacer

14 & 14.8 glazing.

Ironmongery

Antique brass sash catch sash lifts, sash lock, sash pulley

Brass sash catch, sash lifts, sash lock, sash pulley

Croft ironmongery with bespoke finish

Insert requirement.

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

Satin nickel sash catch, sash lifts, sash lock, sash pulley

Trickle ventilation

Not required

Concealed through frame head trickle ventilator (reduced EA)

Trickle ventilator (4600 mm EA)

Surface mounted canopy.

Child restrictor

Not required

Required

Standard product features

Timber:

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

Frame section (liner x depth):

110 x 160 mm.

Sash section:

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

Finish:

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

Weatherseal:

Full standard with Sashglide® acoustic weatherpile.

Glazing:

Internally dry glazed and vented with glazing tapes in accordance with Glass and Glazing Federation requirements.

Beading:

Internal cassette beading.

Parting bead:

Click fit removable parting bead.

Operation:

Counter balanced with spring balances.

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 or curved on plan frames can be made to Mumford and Wood sections and details.

Digital objects
PlatformCompatibleVersionCertified to
IFC
IFC2X3 2 1.3
Revit
Revit 2015 2 1.3
Download now from NBS National BIM Library
Literature
Third party certifications
  • Timber FSC Certified
  • BS EN 644
  • BS EN 6375 : Parts 1, 2, 3
  • Energy Rating B
  • Energy Efficiency Recommended.
  • 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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