Windows (Code 4 home)


The windows are PVC-U 16mm double glazed units with a U-value of 1.90 W/m2K.The glazing on the south elevation is shaded from summer time solar gains by a large overhang to the roof at first floor level and by a canopy on the ground floor.


The windows in the Code 4 home are uPVC. The window is manufactured from multi chamber profiles extruded from a high impact strength modified PVC compound. It complies with UEAtc Technical Guide for the Agrement of Windows in PVC U, MOAT NO. 17: 1990, category B, PVC U with polymer additives.

The system has been assessed by the British Board of Agrement – Ref. BBA Assessment report No. 1119. The window uses Aluminium reinforcing extruded from 6063 alloy to BS 1474: 1987 specification for wrought Aluminium alloys for general engineering purpose bars and sections.

Windows are supplied factory glazed with double glazed units of 24mm thickness. The units are Argon filled as standard for improved thermal performance. In this configuration (i.e. 4mm float – 16mm Argon filled gap – 4mm K glass) the unit will give a U value of 1.6 W/m²K. The unit uses a bent and welded spacer bar (eliminating joints through which water vapour may penetrate) filled with high-grade molecular sieves. A primary PIB (Polyisobutylene) seal is applied coupled with a polyurethane outer seal to ensure a long life unit.

The units are certified by BBA as having enhanced resistance to intrusion.

Open the Code 4 windows (162.52KB) technical information, or see more information on the Munster Joinery website (new window).


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Fact 32

62% of people would like a home where it is only necessary to heat it for a few days a year due to the high standard of insulation used.
Source: Energy Saving Trust 2008