"After energy efficiency, recyclability and sustainable raw materials are increasingly coming into focus for facade materials, which means that wood has clear advantages," says Max Radt, Sales Director Aluminium Systems and International Projects at Gutmann. "Traditionally, wood-aluminium windows are used in residential construction, and aluminium above all in office buildings and high-rises. An integrated system with wood and aluminium does not yet exist in this form for the latter type of building. We are now closing this gap."
Two-stage principle is the real innovation
Gutmann
Gutmann uses the existing EF68 aluminium element facade system with all tests for driving rain tightness, sound insulation and U-values as a basis. These certifications can be completely transferred to the new system. In the further process, aluminium walls are replaced by a timber support shell, especially on the inside of the facade. "The statics are completely newly developed," explains Radt, "we have an aluminium chassis on one side that is load-bearing in itself. We or our partners prefabricate this as a facade element, transport it and assemble it on the construction site. The final static performance, however, is only achieved when the aluminium chassis is connected to the timber beam shell on site. This two-stage principle is the real innovation in our system."
[This sliding hardware can now be used to move 400-kilo glass panes]
The object-specific flexibility is also given with the new wood-aluminium element facade. Customers who have previously only produced pure aluminium facades are enabled by Gutmann to also manufacture and install the new system. The Weissenburg system house delivers both the aluminium components and the timber support shells either to the customer or directly to the construction site.
Gutmann
A knowledge advantage with wood-aluminium windows
Arnd Brinkmann, Managing Director of Gutmann Bausysteme GmbH: "Our decades of experience in the development and implementation of high-quality aluminium facade concepts and our know-how in window systems made of wood and aluminium have led to the development of this modular facade system, with which we want to expand the range of creative facade solutions and introduce wood as a component of element facade systems."
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Of course, the issue of sustainability also plays an important role: the entire system can be completely deconstructed so that the individual components can be recycled separately (aluminium, wood, steel, EPDM, etc.). Only European, FSC-certified wood from forests in Bavaria, the Czech Republic and Austria is used.
System properties (based on element facade EF68):
· Driving rain tightness: RE750
· Air permeability: AE
· Wind load: 1.35 kN/m² / 2.03 kN/m²
· Uf value: 1.0
· Ucw triple: 0.82 (element size 1,500 x 3,600 mm; Ug-value 0.7 W/m2∙K, glass spacer: Multitech G)
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