Double and triple glazing windows

Low-energy double, or triple-glazing is our standard offering, but a wealth of additional options are available.

Glass types for both double and triple glazing can be combined to deliver additional benefits such as noise reduction, increased safety and security, or obscurity, so that the perfect glazing solution can be created.

All glazed windows within the VELFAC Glazing concept are EN 1279 compliant.

VELFAC CLEAR - clear insulation

VELFAC CLEAR glass provides a light, pleasant interior and a clear view of the external environment. Excellent insulation properties are achieved by incorporating a heat reflecting coating on the inner surface of the glass and argon gas within the glazing cavity. This provides an improved internal environment and can help to reduce heating costs.

VELFAC SUN - solar control

If the design of your project requires a reduction in solar heat through the glazing, e.g. on South or West facing façades, then you should choose VELFAC SUN.

VELFAC SUN25 is a neutral colour coating, which is very close to the appearance of standard glass, and delivers a natural internal finish and a clear view of theexternal environment.
VELFAC SUN35 is a little darker in colour than SUN25, and therefore offers greater protection against unwanted solar gain. Although the coating remains verytransparent, the colours of the external view will be slightly affected.

VELFAC DÉCOR - opaque glass for privacy

VELFAC DÉCOR opaque glass should be used in areas where privacy and security are required. VELFAC Décor is available in five different designs: Satin, Pacific, Cotswold, Carré or Matt Laminated - glass laminated with a matt foil to give a sand-blasted appearance. Matt laminated glass also reduces the risk of injury should the glass break.  

In order to get maximum effect of primary glass property, VELFAC recommends that Opaque glass is fitted as the external or middle layer when used with VELFAC CLEAR, and as the internal or middle layer when used with VELFAC SUN. These configurations ensure that the performance of the glazed unit is not compromised. 

VELFAC SOUND - noise reduction

Glazing is given an Rw rating indicating the number of decibels by which they will reduce apparent noise. The use of thicker glass or different combinations of glass can significantly improve acoustic performance.

A standard VELFAC double glazed windows achieves Rw32, which can be increased to Rw42 by adjusting the thickness of the glass and the glazing rebate. (See our catalogue for examples).

VELFAC SAFETY - personal safety

VELFAC SAFETY glass can be supplied as laminated or toughened, both types offering significant safety benefits. Safety glass breaks harmlessly, therefore reducing the risk of injury to residents. VELFAC SAFETY glazing can also provide added levels of security as it is capable of withstanding considerable force.  

VELFAC SAFETY glass should be used in areas where glazing is at risk from human impact (safe breakage) or where glazing is required to form a physical barrier between levels (containment).