Double glazed or triple glazed windows
Double glazing windows with low energy performande is standard with VELFAC, but a wealth of additional options is also
Even if double glazed windows are most commonly used, VELFAC often supply triple glazed windows depending on the requirements for the energy performance.
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.
A VELFAC 200 System window W1230 x H1480mm with standard CLEAR glazing achieves a U-value of 1.54W/m²k. For even better insulation, a VELFAC ENERGY unit employing different combinations of triple-glazing, argon gas within the cavity and a WarmEdge’ spacer can be used. A VELFAC 200 System window W1230 x H1480mm can achieve a U-value as low as of 1.02W/m²k - with triple-glazing as low as 0,79W/m²k.
If the design of your project requires a reduction in 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 the
VELFAC SUN35 is a little darker in colour than SUN25, and therefore offers greater protection against unwanted solar gain. Although the coating remains very
transparent, the colours of the external view will be slightly affected.
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 key 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.
Efficient glazing is fundamental to noise control. Double glazing windows is effective at reducing external noise, but the use of thicker glass or different combinations of glass can significantly improve performance. More precise decibel control can also be achieved in this way. Glazing is given an Rw rating indicating the number of decibels by which they will reduce apparent noise.
A standard VELFAC double glazed windows achieves Rw32, which can be increased to Rw41 by adjusting the thickness of the glass and the glazing rebate. (See our catalogue for examples)
VELFAC can offer a number of different solutions for extreme environments - for
example, close proximity to airports, motorways, or railway lines. The optimum solution, the VELFAC 2+1 window, achieves Rw48. Please call VELFAC for solutions to your specific noise reduction requirements.
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).
VELFAC SAFETY glass meets a number of National and European standards.
VELFAC SECURE glass is designed to minimise the risk of burglary by withstanding significant physical impact and resisting forced entry.
In accordance with BS/EN 356 and BS/EN 1063, security glass is classified to meet the requirements of three different classes:
• Class P1A to P5A vandal-proof
• Class P6B to P8B burglar-proof
• Class BR1 to BR7 and SG1 to SG2 bullet-proof
VELFAC SECURE meets European and International standards.
VELFAC FACADE glass has a non-transparent enamel coating and is used to create glazed panels for visually unbroken facades or facades with a special colour effect. They are especially suitable for concealing floor slabs and other internal structures, or areas behind the facade.
VELFAC FACADE enamel glass is available in several RAL colours and is supplied as toughened and heat-soak tested as standard.
The most popular uses of VELFAC FACADE are:
• Spandrel panels fitted with 6 mm enamel glass
• Look-alike panels - panels with double-glazed units which are usually fitted with solar protection glass on the outside and enamel glass on the inside. This allows closer colour matching to other windows in a facade.
VELFAC FIRE glass should be used in areas which secure escape routes, or which protect persons or objects from fire. VELFAC FIRE glass meets European and International Standards. A VELFAC FIRE window looks exactly the same as a VELFAC 200 System window. VELFAC FIRE glass has been integrity tested according to BS EN standards 1363-1/2, 1364-1 and 1634-1.