Verified by manufacturer 2 months ago
High-performance vertical timber/ wooden sliding Spring Sash Windows with period sightlines and details.
Suitable for any residential, commercial properties and conservation areas.
The conservation spring sash window is a modern-day alternative to the cord and weighted box sash window. It uses a concealed spring-loaded mechanism instead of the cords, weights and pulleys found in a traditional sash window, this has the advantage of allowing for a smaller structural rebate or installation into a flush reveal.
As part of the Conservation range, our spring sash windows offer a choice of frame profiles and glazing bars, along with a variety of double glass unit depths and specifications to ensure that your aesthetic, thermal and acoustic requirements are achieved.
Colours from the RAL classic range, colour matching and stains also available.
Timber: 30; Glazing, ironmongery and seals: 10; Paint finish: 10; Stain finish: 5.
L10/10 Wood windows
L10/210 Wood windows
Dimensions and configurations
Insert requirements or refer to a drawing or schedule.
To EN 1026:2000, Class 4.
To EN 1027:2000, Class 8A.
Resistance to wind load
To EN 12211:2000, Class C5.
Acoustic performance rating
Up to 41dB Rw (38dB Rw+Ctr) subject to chosen glass specification.
Whole window U-value
1.5 W/m2K or better subject to chosen glass specification
Engineered clear grade knot free timber, all FSC certified. Chain of Custody can be specified.
Engineered Redwood frame and sashes with Red Grandis external liners and meeting rails with hardwood Sapele cill.
Engineered Hardwood Red Grandis.
Chain of custody
Finish as delivered
Three coats of spray applied water based micro-porous paint.
Three coats of spray applied water based micro-porous stain.
Preservative treatment to wood components
Teknol Aqua 1410.
Concealed through frame head trickle ventilator (reduced EA).
Trickle ventilator (4600 mm EA) - Surface mounted canopy to top rail of top sash.
Sash horns not required.
Sash horns required.
Glazing or infill
Internally dry glazed and vented with glazing tapes in accordance with Glass and Glazing Federation requirements.
24 mm Double glass unit comprising 4 mm Tough / 16 mm Argon / 4 mm Tough Low E 1.2.
24 mm Double glass unit comprising 4 mm Tough / 16 mm Argon / 4 mm Tough Low E 1.0.
24.8 mm Acoustic Double glazed unit comprising 6.8 mm Sound Control Laminate / 14 mm Argon/ 4 mm Tough Low E 1.2.
24.8 mm Acoustic Double glazed unit comprising 8.8 mm Sound Control Laminate / 10 mm Krypton/ 6 mm Tough Low E 1.0.
27.6 mm Enhanced Acoustic Double glass unit comprising 10.8 mm Sound Control Laminate / 10 mm Krypton / 6.8 mm Sound Control Laminate Low E 1.0.
14 mm Double glass unit comprising 4 mm Tough / 6 mm Krypton / 4 mm Tough Low E 1.0.
16.8 mm Double glass unit comprising 6.8 mm Laminate / 6 mm Krypton / 4 mm Tough Low E 1.0.
Single glass 4 mm Toughened.
Single glass 6 mm Toughened.
Single Glass 6.8 mm Sound Control Laminate.
Single Glass 4.5 mm Goetheglas Restoration Glass.
Polished brass sash catch.
Polished brass sash lifts.
Polished brass sash lock.
Polished chrome sash catch.
Polished chrome sash lifts.
Polished chrome sash lock.
Satin chrome sash catch.
Satin chrome sash lifts.
Satin chrome sash lock.
Antique brass sash catch.
Antique brass sash lifts.
Antique brass sash lock.
Oil rubbed bronze sash catch.
Oil rubbed bronze sash lifts.
Oil rubbed bronze sash lock.
Satin nickel sash catch.
Satin nickel sash lifts.
Satin nickel sash lock.
Aged brass sash catch.
Aged brass sash lifts.
Aged brass sash lock.
Satin brass sash catch.
Satin brass sash lifts.
Satin brass sash lock.
Light antique brass sash catch.
Light antique brass sash lifts.
Light antique brass sash lock.
Alternatives available in various finishes from the likes of Croft, consult manufacturer for details.
Counter balanced with spring balances.
White (RAL 9003).
Colour from RAL classic range.
110 x 160 mm.
Liner x depth.
Sash section (top/ side rail x depth).
64 x 57 mm with 94 mm bottom rail and 43 mm midrail.
57 x 57 mm with 94 mm bottom rail and 43 mm midrail.
Sill section (height x depth)
68 x 163 mm.
90 x 163 mm.
90 x 163 mm sill section required.
Cill horns not required.
Cill horns as drawing.
Click fit removable parting bead.
External liner moulding
Lambs tongue mould.
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.
Perimeter/Integral spacer bar
Black warm edge perimeter spacer and integral glazing bars within unit cavity.
24 and 24.8 glazing.
White warm edge perimeter spacer and integral glazing bars within unit cavity.
24 and 24.8 glazing.
Black aluminium perimeter spacer.
14 and 14.8 glazing.
White aluminium perimeter spacer.
14 and 14.8 glazing.
Internal cassette beading.
Weather seal (factory applied)
Schlegel Aquamac AQ109.
Country of product manufacture
Refer to manufacturer website for product end of life instructions.
NBS BIM object standard
This BIM object has been authored to meet the requirements of the NBS BIM object standard.
Find out more about the NBS BIM object standard.
Barnet Brick House - New Build timber windows and doors
Arts & Craft, Buckinghamshire
Award winning Birmingham Steamhouse Renovation timber window project
Cheltenham Ladies’ College
Coastal property, South East England
Commercial renovation of historic building
Converted school, Bristol
Home refurbishment timber window and door project
Furnival House North London
Kent New build
KoHo Coffee, Buckinghamshire
Light fantastic to Essex newbuild
London Conservation and heritage listed building renovation
Nautical new build, North Norfolk
Private development, Ipswich
Restored Georgian Estate
Surrey home rennovation