Windows

The Windows

The heat transmission of old windows with single-pane glazing is very high. The heat transfer coefficients required by the German Energy Saving Ordinance can only be achieved with multiple-pane insulating glazing.

The Uw value (heat transfer coefficient) of single-pane glazing is Uw=5 W/m2K, for high thermal insulation glazing Uw=0.8W/m2K. The heat loss of single-pane glazing is about six times greater. Also by replacing older multiple glazing, heat losses can be reduced by approx. heat losses can be reduced by about three times. For windows, the GEG specifies the heat transfer coefficient (Uw=1.3 W/m2K) as the minimum requirement.

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Windows are exposed to particularly high building physical loads. In the event of damage, all constructions such as frames, glazing, anchoring, and fittings must be checked for damage.

Thermographic Images

Thermographic images can show the heat losses of windows well.

Windows in good condition should be maintained for economic and ecological reasons.

The existing single glazing can be replaced by multiple glazing if necessary.

Damage to Window Sills

Window sills can also be the cause of damage to windows.

Moisture penetrates through cracks into the lower parts of the frame and leads to rotting if the moisture continues to penetrate.

Damaged window sills must be replaced by new ones.

Renovation of the Joints to the Outer Wall

Open joints between the frame and the outer wall can lead to rotting and mold growth.

Leaking joint construction materials must be replaced by sealing tapes.

Design of the Window Opening

Windows are essential components of architectural design.

The overall impression of the building is largely determined by the arrangement in the facade and the arrangement of the windows.

Windows that are listed and need to be replaced can be reconstructed with special craftsmanship.

Preparation of the Outer Wall Opening

After the old windows and doors are removed, the reveals of the outer wall must be prepared.

The sufficiently wide expansion joint between the window frame and the external wall must be heat-insulating, air-, rain-, and diffusion-proof. To achieve this, a pre-compressed sealing tape is glued to the window frames of the windows, which expands in the area of the joint after installation.

After appropriate adjustment of the frame, it is anchored to the masonry reveal.

The internal silicone seal forms the closure and prevents water vapor from the interior from penetrating the sealing tape.

Temporary Heat & Light Protection

Folding or roller shutters, blinds, and awnings can provide heat and light protection for windows.

... more about the base plate and ceiling