A wooden house with an exotic HI-MACS exterior

News /
23 April 2014
A wooden house with an exotic HI-MACS exterior

Architect and builder Volker Wiese has realised his personal home design dream with a Bauhaus style residence with exterior HI-MACS® cladding that secures privacy from the outside but encloses a delightful garden with-in a multi-façade, two wing design. For the keen nature lover that Wiese is, using acrylic stone for the exterior wall cladding was an obvious choice as all the materials used in this energy efficient structure are sustainable. In selecting HI-MACS® for the facades, Wiese has become a pioneer in the use of this modern building material for the construction of exterior walls.

Wiese settled on the site for his new project in the fashionable but urban area of Berlin-Grunewald where he demolished a run-down post war building in a quiet cul-de-sac and went about designing his new two wing home that secured his privacy from the outside with symmetrically arranged HI-MACS® panels, while forming an intimate and sheltered courtyard on the inside, with exciting planes and offset facades mixed with large windows. The entire design and construction process was fascinating.

As the connection between nature and living was also an important aspect in the architect’s choice of material for structural components, he chose exclusively ecologically sustainable high-quality products such as HI-MACS®. The architectural company Kaden Klingbeil implemented Volker Wiese’s design as a wood-frame construction with solid wood ceilings. However, they did not want the benefits of the timber construction to be too obvious, so they opted for aventilated rainscreen facade.

The façade panels were mounted by the façade construction company Kiebitzberg using aluminium structures made by BMW Montagetechnik. The HI-MACS FR elements (in Alpine White), which is specifically designed for external use, were fixed onto the structures with KEIL inserts invisible from the outside.

Tom Klingbeil is fascinated with HI-MACS.

“The supporting, space-enclosing, insulating and moisture-regulating external wall demonstrates excellent thermal properties. For example, in combination with external cellulose insulation, this timber-frame construction reduces the use of energy to just 70 % of the energy used in a reference object as per EnEV 2009.”

Its versatility has led to the HI-MACS solid surface material becoming established as an ecologically sound high-quality product in the world of architecture and design. It can also be used in the construction of façades and opens up new options to architects and façade construction companies in terms of design, functionality and aesthetics. Its natural property of adapting to temperature fluctuations makes HI-MACS® the perfect material for 3-dimensionally shaped façade elements such as the embrasures of the Wiese residence.

In regard to fire resistance, HI-MACS-S728 in Alpine White received a fire rating of B-s1-d0 in the SBI test, beating all other mineral-based materials. Four other colours in the HI-MACS façade range also achieved great results in regard to fire rating. In addition, twelve more colours included in the HI-MACS programme can be used in nearly any relevant areas due to their B1 rating according to DIN 4102-1.

In his choice of material, Volker Wiese was mostly impressed with the high quality of the acrylic stone:

“The delicate surface feel of HI-MACS was exactly what I was looking for in terms of quality. HI-MACS allowed me to implement my idea of building in a sustainable way.” Wiese also values the non-porous smooth finish of the Solid surface. “I expect that it will be easy to clean, durable and weather-proof.”

These expectations are backed up by certified tests carried out on the HI-MACS FR series designed for external use. The products beat all other mineral materials as well as solid surfaces in the ETA certification tests in terms of UV resistance.

Site area: 1,500 m²
Material: HI-MACS façade panels S728 Alpine White with KEIL undercut anchor KH
Design: Dipl.-Ing. Volker Wiese, Berlin
Completion: Kaden Klingbeil Architects
Authorised HI-MACS fabricator: Kiebitzberg GmbH & Co.KG
Façade construction company: Peter Knapp Dach- & Fassadentechnik GmbH
HI-MACS supplier: Kloepfer Surfaces
Wood construction: Zimmerei Sieveke GmbH
Photo credits: Dirk Wilhelmy


Gunnersen’s wood-based panels, timber and decorative surface products include plywood, MDF, particleboard, Masonite Hardboard, cladding and flooring.

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