architecture

Rear-ventilated curtain wall – construction and costs

Rear-ventilated curtain wall facade panels-wood look

The facade not only gives the building an individual look, but also has a protective function – against wind, rain and snow. the rear-ventilated curtain wall enjoys a steadily increasing popularity and enables a variety of design options. The VHF can be installed on existing masonry and is equally suitable for new buildings and renovations, where even an old building can receive an extensive facelift. You can find out how this special facade shape works in today’s post.

Rear-ventilated curtain wall – structure

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The rear-ventilated curtain wall is characterized by a structural separation of the two components – the weathering layer and the insulation. The facade is mounted in front of the existing exterior walls of a house and held in place by a special support system. An insulating material is inserted between the masonry and the prefabricated composite elements. The space created between the outermost layer and the insulation allows the air to circulate freely behind the facade, which prevents the formation of moisture and ensures optimum thermal insulation.

Rear-ventilated curtain wall – multi-layer external wall construction

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Here are a few key points to consider when building your VHF:

– The layer of air in between should be larger than 2 centimeters, about 3 to 5 centimeters, so that good air circulation is possible. The system has a ventilation outlet at the top and bottom made of a fine-meshed net and a ventilation grille with narrow gaps.

– Rock wool panels with a thickness of 5 to 12 centimeters, coated on one side, are usually used for the thermal insulation layer. Stone wool is a preferred material not only because of its good thermal insulation properties, but also because it forms an effective barrier against noise. Of course, other insulation materials can also be used. Mostly mineral.

– The second supporting structure can consist of wood, aluminum, steel or a combination of different materials. This construction is screwed vertically onto the exterior walls of the house. Their strength is matched to the insulation.

– Different clothing materials allow maximum design freedom. The variety of frost-resistant materials is unlimited and ranges from plates made of copper, ceramics, fine stoneware, aluminum to wood. Even heavy clinker facades can be easily imitated.

Rear-ventilated curtain wall – advantages

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The characteristic structure of the VHF leads to a number of advantages – in terms of building physics and economics. First and foremost is the effective thermal protection. In addition, fire protection, protection against driving rain, protection against condensation water, noise protection and durability.

One of the advantages of the VHF is the freedom of design. The facade panels made of various building materials, which are mounted on the vertical load-bearing structure, offer numerous design options. This means that even an old building can shine in new splendor.

From an economic and ecological point of view, the curtain-type, rear-ventilated facade is also particularly advantageous. It can be easily dismantled and has lower maintenance and follow-up costs compared to conventional facade forms. This means that low-energy and passive house standards can also be met, because it ensures the greatest possible heat storage, optimal removal of usage moisture and reduces CO2 emissions. Photovoltaic elements and solar collectors can also be integrated into facade cladding. Ventilated facades can also be greened. For this, the selection, anchoring and weight of the climbing plants must be carefully planned.

 VHF costs

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But this special facade has its price. It is not possible to say exactly how high the costs will be for a ventilated curtain wall. They are strongly influenced by the choice of materials for the substructure, the insulating material and the visible shell. In addition, there are the costs for assembly. Compare not only the prices of individual materials, but also the offers from specialist companies.

an old house shines in new splendor

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Substructure made of aluminum or steel

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VHF is installed in front of the existing exterior walls of a house

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numerous design options with various building materials

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Porcelain stoneware tiles

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Removal of building and usage moisture

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red clinker exterior walls hidden behind new facade panels

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Substructure and insulation layer visible

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weatherproof facade system in wood look 

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gold-colored facade panels with asymmetrical shape

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white facade panels

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Facade panels in wood look

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