2012/06/01   |   Austria

WEINMANN + HARTL HAUS = Proven Quality!

Timber construction with a maximum level of prefabrication, manufactured in a state-of-the-art production plant.

You usually only build a house once in your life and naturally you want everything to be perfect. Finally living in a home of one‘s own, feeling comfortable and having a house designed entirely according to your own personal taste — this is what people who invest in their own home want. HARTL HAUS customers‘ expectations are met perfectly here, because every single house focuses on personal needs and the fulfillment of individual wishes. Every single house is different — and it is built at an unbelievable speed!

In light of the requirements concerning so much flexibility and speed, HARTL HAUS has decided on production using the latest technology and invested in an ultra-modern WEINMANN production plant.

It all began in 1897

As the oldest prefabricated house producing company in Austria, HARTL HAUS Holzindustriegesellschaft m.b.H. has an impressive history. Founded as a small carpentry workshop in 1897 by Wenzel Hartl in Echsenbach (Lower Austria), today the Company employs around 280 employees on a plant site of over 100,000 m². Almost 14,500 m² are used for production halls — more than 7,000 m² of which are used for the manufacturing of prefabricated houses. Every year around 220 prefabricated homes are built there. Approximately 80% of those homes are sold in Austria, Germany and Switzerland and 20% are delivered to Italy and Eastern Europe.

The WEINMANN plant creates unique buildings: each house is different

The wall elements and roof elements for the mainly individual single-family houses are produced without exception on WEINMANN machines. In 2010 HARTL HAUS invested in a complete new plant to enable state-of-the-art production. The houses are all unique. They represent not only the highest quality, but also traditional and proven hand-crafted work, combined with the most progressive technology.

On the same wavelength: WEINMANN Holzbausytemtechnik and HARTL HAUS

„At that time our former plant, being 15 years old, no longer met our demands — particularly with regard to quality. We therefore decided to equip our production with state-of-the-art technology,“ explains Roland Suter, one of the two HARTL HAUS executive directors. „Before making this investment, we were looking for a partner who could fulfill the high quality standards that we had set ourselves and who had enough experience in timber house construction. It was also important that this machine manufacturer was quickly available when necessary. WEINMANN met these requirements to a high degree. From the very beginning our wishes were taken seriously and after just a short time we had built up a trusting partnership relationship between our two companies. For WEINMANN the product quality of their own machines is just as important as the quality of the final product, when it reaches the customer. We believe in the same key factors and that convinced us from the very beginning,“ adds Peter Suter.

The ideal home begins with four walls and a roof

HARTL HAUS produces the walls, the roofs and the floors of the prefabricated houses, entirely using WEINMANN machines. The ideal home is finished within a short construction time of only three to four months from the start of assembly. In the production of the walls, the WEM 150 framing stationis the first machine used. Here the semi-automatic production of complete frames is standard. After plates, studs and lintels have been added and positioned, they are automatically aligned and nailed together. Various nailing patterns can be programmed. The machine is equipped with an infeed roller conveyor for the top and bottom plate.

After the subsequent longitudinal transport onto a WEINMANN WTW assembly table the vapor barrier is attached and the sheathing (Fermacell) is applied. The panels are positioned, using the WHM 100 handling system, and glued onto the timber frame. A glue application unit, enabling precise metering of the adhesive quantity, applies the glue. The WMS 120 multifunction bridge is next in the sequence: it secures and processes the sheathing of wall elements, roof elements and floor elements. Once this step is completed, installation of the cavity wall sockets can begin. After the workpiece has been turned, a WHM handling system is used to insert the electrical conduits plus the insulation and to position the sheathing. After a further longitudinal transport the workpiece arrives on a WTW assembly table. There the sheathing is positioned, glued and formatted. All that is left to do is to apply the external wall insulation and process it with the WMS 120. For special elements and gable elements there is a dedicated special element station from which the walls can be placed on a wall track and moved into the wall storage, where they are stored until final loading.

Roof and floor production

Using the WEINMANN WTD 170 assembly table HARTL HAUS produces roof elements and floor elements with precise angles and dimensions. The table is equipped with CNC-controlled fully-automated positionable clamping units for creating the framework. The elements are then processed, using the WMS 150 multifunction bridge. Additionally, this bridge is equipped with the LATTEC SYSTEM for precise, automatic positioning and fastening of battens and boards from a lath magazine. The element is turned on a WTW assembly table. The insulation and installations are also inserted here. The sheathing is then applied and nailed with the WMS 150. After a longitudinal transport onto a buffer table the completed element can be loaded.

Market development

„At the moment there is a great demand for cubic buildings and bungalows, that are mainly sought after by older builders. The trend is for low-maintenance construction materials, with a particular highlight on „energy efficiency“. The new HARTL HAUS model house produces as much energy as it consumes!“ states Roland Suter, when we ask him for his assessment of the market.

Noticeable effects for flexibility and efficiency

The timber turnover at HARTL HAUS has increased by approximately 50 m² per day since the machine was commissioned. The inner shells of the passive houses can now be prefabricated and bigger frame dimensions can be processed without any problems. Production requires between four and six employees less and these people can be flexibly used in other work areas. Overall, productivity has increased by around 15% - thanks to the fast production line!


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