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Tilt and slide sash windows which display traditional styling, yet conceal clever functionality; both sashes also tilt inwards, so the external panes can be cleaned from inside the building. Tested for acoustic, thermal and weather containment, these easy clean sash windows can also be suppled with an enhanced security option if required, compliant to PAS 24 and Secured by Design (SBD) approved.

The windows are suitable for high-rise buildings and complement both traditional and modern architectural styles. They offer the same design versatility as other TRC sash windows - hardwood or softwood frames, RAL finishes, and four glazing options (safety, obscured, acoustic and solar control). Windows are double glazed as standard, with triple glazing also available.

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

Standard product features

Frame:

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

Sash:

55 x 55 mm top rail and stiles, 90 x 55 mm bottom rail, 56 x 55 mm meeting rail.

Mullion/ transom:

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

Sill section (h x d):

69 x 160 mm.

Staff/ parting beads:

Timber.

Wood moisture content:

12–19%.

Glazing beads:

Internally beaded.

Sill:

Solid hardwood.

Horns:

Solid feature horns to top sashes are included as standard.

Fittings:

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

Mechanism:

Sashes are hung on spiral balances and have an additional feature, which allows the sash to be lowered into the room to allow cleaning and maintenance of the outside face.

Weather seal:

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

Performance:

  • U-value (to BS EN ISO 10077-1): ≥1.6 W/m²K.
  • Air permeability (to EN 1026:2000): Class 4.
  • Water tightness (to EN 1027:2000): Class 4A.
  • Wind resistance (to EN 12211:2000): Class C4.

Options

Finish:

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

Trickle ventilation:

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

NBS Specification

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This product is associated with the following NBS Create clause:
45-25-99/350 Wood window units

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying

Manufacturer

Name:

TRC Windows

Tel:

+44 (0) 1858 469225

Product reference

Traditional Sash Easy Clean Windows

Size

[As drawing]
-
Insert reference.
[As schedule]
-
Insert reference.

Material

[Engineered Accoya]
[Engineered European oak]
[Engineered hardwood]
[Engineered redwood]
-
Standard.

Sill projection

[35 mm]
[50 mm]
[60 mm]
[70 mm]
[80 mm]
[90 mm]
[100 mm]
[110 mm]

Sill horns

[Not required]
[As drawing]

Sash horns

[Not required]
[Type H1]
[Type H2]
[Type H3]
[Type H4]
[Type H5]
[Type H6]

Window board groove

[Required]
[Not required]

Internal glazing bars and/or perimeter bead

[18 mm lambs tongue type 2]
[18 mm ovolo profile type 2]
[22 mm lambs tongue type 1]
[22 mm ovolo profile type 1]

External glazing bars

[18 mm chamfered putty bar]
[22 mm chamfered putty bar]

Finish

[Dual finish]
-
Insert requirement.
[RAL classic range]
-
Insert requirement.
[Stain]
-
Insert requirement.

Glass units

[24 mm double glass unit]
-
4 mm tough/ 16 mm argon/ 4 mm tough Low-E.
[24.8 mm sound control double glazed unit]
-
6.8 mm sound control laminated/ 14 mm argon/ 4 mm tough Low-E.
[Special order]
-
Insert requirement, safety, obscured, acoustic or solar control glass options available.

Perimeter/ Integral spacer bar

[Black warm edge perimeter spacer and integral glazing bars within unit cavity]
[Matt chrome warm edge perimeter spacer and integral glazing bars within unit cavity]
[White warm edge perimeter spacer and integral glazing bars within unit cavity]

Ironmongery

[Antique brass sash fitch fastener, sash lifts, sash pulleys]
[Brass sash fitch fastener, sash lifts, sash pulleys]
[Oil rubbed bronze sash fitch fastener, sash lifts, sash pulleys]
[Polished chrome sash fitch fastener, sash lifts, sash pulleys]
[Satin chrome sash fitch fastener, sash lifts, sash pulleys]
[Satin nickel sash fitch fastener, sash lifts, sash pulleys]
[Special order]
-
Selected Croft ironmongery with bespoke finish is available; consult manufacturer and insert requirement.

Trickle ventilation

[Not required]
[Concealed through frame head trickle ventilator]

Child restrictor

[Not required]
[Angel lock]
-
Standard.
[Traditional sash stop]

Enhanced security

[Not required]
[PAS 24]

Manufacturer details

Knoll House ,
Union Wharf ,
Market Harborough ,
Leicestershire, LE16 7UW
Tel +44 (0) 1858 469225
Fax
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