Composition and manufacture
The NTech Passive window range features:
Triple-glazed sealed unit: improved energy-saving unit contains low-emissivity glass and argon-filled cavities: ES 4mm glass, 16mm Argon.
Groove for extension cill: a variety of aluminium extension cills are available from NorDan to meet the clients particular design requirements.
Aluminium glazing beads: aluminium glazing beads reduce the level of maintenance and create a more substantial design by allowing full ventilation and drainage. The aluminium is securely clipped into place thus preventing any damage to the window.
Gasket: the profile of the window sections, and design for drainage, depends on the weather seal being able to provide the required resistance of the gap, between sash and frame, to weather.
Optional aluminium cladding: the optional aluminium rainscreen cladding greatly improves the lifespan of the product, and vastly reduces maintenance costs. It can also be powder coated to any RAL colour of the clients choice.
Glazing system: the system is self-ventilating and self-draining, therefore no moisture is in contact with the wood. To improve security, the sealed unit is glued into the sash.
Decompression zone: the space between the external surface and the weather seal has been designed as a decompression zone. This neutralises the pressure differentials, and is self-draining and self-ventilating.
Warm edge technology: much lower thermal conductivity than traditional aluminium spacers. Consequently, the temperature at the edges of the glass is several degrees warmer.
Vacuum impregnation protects the timber from rot, fungal and insect attack.
Insulated frame and sash: a layer of insulation is laminated into all four sides of the 105mm deep frame and sash to greatly enhance energy saving. Timber is sourced from sustainable forests, with PEFC full chain of custody.
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