Insulating glass | windowglass

Insulating glass is one of the main product groups of WINDOW GLASS, s.r.o. and is produced using certified technology.

It shall consist of at least two panes of glass separated by one or more spacer frames hermetically sealed around the perimeter of the glass.

The interglass space is filled with inert gas (argon, krypton). The inner and outer sealing material is mechanically stable and durable. Depending on the type of glass used, the insulating glazing can offer exceptional thermal insulation, solar control, security, design, soundproofing, fireproofing or bulletproof properties.

Insulating glasses are mostly designed with building-physical requirements in mind, which include:

thermal technology,
airtightness,
reflection and anti-reflection,
safety and security.

Technical data

Insulating glasses are manufactured using proven two-stage sealing technology (butyl, polysulfide). Due to their excellent properties (thermal insulation, sound insulation, anti-sun, reflective, safety) they are often used in the construction industry for windows, doors and all-glass facades. Compared to single glazing, double glazing allows to reduce heat losses by 38% to 80% depending on the type and design of the double glazing.

insulating-glass

Technical description

Glass – all types of Float flat glass and special glasses
Interspace – filled with air, gas (argon, sulphur hexafluoride – SF₆, or a mixture of gases according to the requirements for the properties of double glazing)
Spacer – used thickness 6-24 mm
Molecular sieve – desiccant based on zeolites
Butyl – the first stage of double glazing sealing, hot applied
Polysulphide or polyurethane sealant – second stage of sealing, air curing

Elevation of mounted glass

In the manufacture of insulating glass, the interspace is filled with an inert gas at actual atmospheric pressure. If the glass is installed at different altitudes, this must be stated in the order.

Tilting windows to an oblique or horizontal position significantly worsens the heat transfer coefficient U [W/(m²·K)]. When insulating glass is used in an inclined position, the heat transfer coefficient deteriorates by approximately 30%, and by up to 50% in the case of horizontal glazing.

Anti-solar glasses are used with respect to the selective properties of the coated layer. The type of coating or tint used determines the ability to reflect or absorb solar radiation, thereby affecting the functional properties of the overall glass. A characteristic feature is the low solar energy transmittance value g [%].

Maximum glass dimensions

Maximum manufacturable dimension of insulating glass: 6000 x 3210 mm Minimum manufacturable dimension of insulating glass: 350 x 200 mm

Glass with dimensions above the maximum, below the minimum or exceeding the maximum weight – by agreement with the manufacturer.

For concrete insulating glass, the dimension is limited by the size and thickness of the weakest pane according to the static possibilities.

Spares

Interglass partitions

One of the modern requirements for the functionality of insulating glass is the aesthetic and optical division of the insulating glass area.

For this purpose, intermediate glass partitions are used, which are inserted into the intermediate glass space.

Thanks to this solution, the windows can be easily cleaned, while the grids are protected from weathering and dirt for the entire lifetime of the insulating glass.

The colour options of the partitions are wide, from RAL shades to wood imitation, which allows to meet almost every customer’s wish.

Duplexes

Duplexes are inserted into the interglass space to give the optical impression of dividing the glass into multiple insulating panes. At the point of the duplex, window manufacturers glue a semblance of partitions to the surface of the glass to reinforce the impression of a window with partitions.

Intermediate glass frames

The spacer or spacer frame is basically a small profile that connects the individual panes of glass around the perimeter.

It is a small but very important part of glazing.

This is because it largely determines how the glass will insulate, whether or not it will save you more money on your heating bills, and whether or not the glass will dew in the winter.

Warm spacer

If we have a warm spacer, it is a filler with low thermal conductivity. The cold transfer from the outside of the glass will be significantly eliminated by the frame.

Advantages of warm spacer frames: they guarantee temperature equalization at the edge and in the glass surface, prevent water condensation on the glass and its dew, thus limiting the formation of unpleasant mould. The use of warm frames reduces heating costs.

Currently, TGI is probably the most widely used type of warm spacer.

Even better insulating properties can be achieved by using the Swisspacer composite frame, which has an even significantly lower PSI value. This frame is usually installed in high quality window systems.

Laser printing

Inkjet printing

Ornaments

Ornamental glass is a flat glass with a one-sided patterned surface characterised by more or less visible ornaments.

It is used for the decorative division of spaces, to reduce transparency, to create stained glass, for glazing windows and doors, etc.

If there is a need to eliminate unwanted transparency, but maintain optimum light transmission, it can also be used in insulating glass.