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Fast construction and a light yet well insulated first floor were the results, when the RockShell modular system was adjusted to create an addition to a school in Havdrup, Denmark.

ROCKWOOL responsibles

ROCKWOOL A/S
Hovedgaden 501
DK - 2640 Hedehusene
+45 4656 1616

Contractors

Store Hedebyg Enterprise A/S

Architects

Solrød Kommune (Michael Bernfeld)

The primary school in Havdrup, Denmark, needed more space. Since the site is rather cramped, it was decided to add an extra floor to the existing 600 square metre building, thereby doubling its size. "However, the existing building was not constructed to carry the extra floor, so we were looking for a material that could provide us with facades that weren't too heavy. But of course it also had to be flexible enough to fit the architectural design without us having to make too many compromises," says Michael Bernfeld, who is an architect with the Municipality of Solrød and responsible for the design of the extension. In a dialogue with ROCKWOOL Scandinavia, the RockShell system was adjusted, so that it fits the architecture but was still a cost-effective solution. One challenge was the asymmetrical vertical lines on the façade that were part of the architectural design. "Whenever there is a vertical line, where two boards on the façade meet, there has to be a steel beam in the wall. And as the lines were designed to be placed at varying distances and we also had to take into account placement of the windows, we really had to watch our step," says construction architect at ROCKWOOL Scandinavia, Simon Bullinger.


Light materialsthat help prepare for the future
Michael Bernfeld explains that with the RockShell modular system it has been possible to build the extension without having to reinforce the foundations of the existing building.

As the entire roof of the existing school building was removed in order to add the extension, it was important with a short construction period to limit the cost of covering the building with a tent. "It is great with RockShell as facades are erected in no time," says Michael Bernfeld. The RockShell system turned out to be not only fast to build with but also an easy solution. "Because the materials are very light we did not need a lot of machines or special tools to lift them to the first floor. Also, they could be placed anywhere on top of the existing building and the walls could be applied from the inside. Light materials are important for each worker as well as we are able to build without exposing the workers to very heavy loads," says Michael Bernfeld.  

The extension to Havdrup School is the first vertical building built with RockShell and the largest RockShell building so far. The inorganic materials have made it easy to meet fire safety requirements, which was another reason why RockShell was chosen for the project. Apart from the building of the extension, the existing school building has also been renovated and further ROCKWOOL insulation added."This means that the whole building is now optimized with regards to energy consumption, and the indoor climate has also been improved. RockShell performs well in relation to energy - even with the slim walls. This has made it possible to create a low energy building that lives op to the expected requirements of the 2015 building code," says Michael Bernfeld. By adding the extension on top of the existing building, what has been created is a school with a coherent look, where the school kids in Havdrup have twice as much space with a better indoor climate. 


ROCKFON and ROCKPANEL also part of the solution
With 80 kids running around, the school also needed good acoustical insulation. "A school poses many challenges when it comes to noise, and by adding ROCKFON on the ceiling of both the extension and the existing building, we were able to meet those challenges. ROCKFON B40 has really helped us a lot in this regard, as have the classical ROCKFON plates," says Michael Bernfeld.

Another ROCKWOOL product, ROCKPANEL Chameleon, provided the architect with unique aesthetic opportunities for the façade. "We wanted to create a light architectural look but give the façade a bit of a twist. With ROCKPANEL Chameleon we were able to create a classic, yet different look that can stand the test of time but is also a bit fun," he says.

The extension to Havdrup School is the first vertical building built with RockShell and the largest RockShell building so far. The inorganic materials have made it easy to meet fire safety requirements, which was another reason why RockShell was chosen for the project. Apart from the building of the extension, the existing school building has also been renovated and further ROCKWOOL insulation added."This means that the whole building is now optimized with regards to energy consumption, and the indoor climate has also been improved. RockShell performs well in relation to energy - even with the slim walls. This has made it possible to create a low energy building that lives op to the expected requirements of the 2015 building code," says Michael Bernfeld. By adding the extension on top of the existing building, what has been created is a school with a coherent look, where the school kids in Havdrup have twice as much space with a better indoor climate.