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DIY - Tips & tricks about façades

Saving energy in the envelope

The current Energy Saving Ordinance (EnEV) has clearly stated: for a newly erected exterior wall, the maximum permitted U-value lies at 0.35 W/m²K. Whether you can achieve or even better this value through an thermally-insulating wall made of special stones, a curtain, rear-ventilated façade or a composite thermal insulation system (ETICS), is up to you. The advantages of modern, lightweight composite systems are revealed to you on the following pages. They are the true energy-saver on façades, and are also inexpensive, tried and tested over years, and consistently improved in design details.

Slim is smart; also on façades!

The times of thickly-swaddled building frontages are over. The window areas remain freer, are better provided with light and permit wider views of the outside world. The appearance of the façade is also retained – extra slim, but higher performance insulation materials with thinner insulation material thicknesses make this possible. Good insulation values are already achieved with insulation thicknesses of only 80 mm. Currently in fashion: standard insulation panels with insulation thicknesses of only 120 mm. The secret of their insulation thickness lies in the closed cell structure of the material.

Warms, cools and swallows sound

An ETICS consists of a combination of individual products which can be extremely different in their effect. The components not only optimise the degree of effectivity of the insulation, but also protect the façade against the weather and lengthen its lifetime. In addition to providing protection against the cold in winter, an ETICS also offers effective protection against the heat of summer. And those living on a traffic-filled street will hold the sound-insulating properties of their new ETICS in high esteem.

What is long-lasting is always good: The insulation material Styropor® (polystyrene)

An ETICS consists of 3 components which are aligned differently with each other depending on the manufacturer: the fastening, insulation material and façade plaster. Façades with the high-performance insulation material Styropor ® can be adhered directly to the masonry using special adhesive anchors. The advantage: in contrast to dowelling, the fastenings to not penetrate the insulation material; this remains untouched. This prevents thermal bridges and dowel marks. The insulation panels themselves can feature many small holes through which the moisture can be conducted out of the masonry. This also improves the room climate in the insulated rooms.

XPS insulation: pressure-resistant and waterproof

XPS is a special polystyrene insulation material with a closed and particularly dense cell structure. This makes it highly pressure-resistant and water-repellent – ideal for high-performance insulation under floor slabs, on cellar walls and on façades. If floor slabs and the exterior cellar walls are insulated using XPS, the entire cellar is placed behind a protective XPS insulation envelope, and can be lived in all year round. Don’t forget: an XPS perimeter insulation, i.e. thermal insulation of the cellar exterior wall on the outside lessens the thermal flow from heated or unheated cellars, which helps to save large amounts of energy.