Smooth acoustic ceiling in a listed building: Strandgade 104
Smooth acoustic ceiling in a listed building: Strandgade 104 In the heart of Christianshavn, where Copenhagen’s history flows through the canals, Strandgade 104 stands as a carefully transformed property with roots dating back to 1806. The former leather warehouse has now been converted into four exclusive boutique hotel apartments overlooking both the canal and the city’s vibrant atmosphere. Here, history has not just been preserved – it has been highlighted and elevated, with respect for the past and an eye on the future. The property developer Falk-Rønne & Kierkegaard, together with partner Artha, acquired the building in 2022 and began the transformation. Minimal intervention with maximum effect The renovation of the fully listed building was carried out in close collaboration with architect David Thulstrup and the Danish Agency for Culture and Palaces. This demanded a high level of care in both materials and solutions – especially when it came to acoustics. In listed buildings, nothing can be lost: every beam, brick, and surface tells a story. That is precisely why the choice fell on Hz Flex-R acoustic panels and Hz Acoustic Plaster 03 from Hz Acoustic. Hz Flex-R is made from recycled foam and is characterized by its flexibility and low thickness of just 15 mm. This makes it possible to preserve and highlight the many visible beams that define the building’s character, without letting the ceiling dominate the space. An acoustic ceiling in a listed building that blends seamlessly with the architecture When it comes to older and listed buildings, modern solutions must take a step back – without compromising comfort. With Hz Acoustic Plaster 03, a smooth acoustic ceiling is achieved that naturally blends with the room’s other surfaces. The white plastered finish reflects light and accentuates the details of the restored materials without drawing attention away from them. The result is an acoustic solution that works discreetly. Guests and residents feel the difference through the comfortable sound and visual calm, even if they don’t see it. Design vision with respect for history Architect David Thulstrup describes the ambition as a desire to bring the future into the past – without imitating it. By working with a limited palette of materials, including Dinesen planks, Sørensen leather, and Finnish granite stone, he has succeeded in creating a dialogue between old and new that is neither nostalgic nor intrusive. Our contribution to the project’s acoustics plays a discreet yet crucial role in this overall balance. When acoustics and aesthetics work hand in hand, a special sense of calm emerges – and that is exactly the feeling experienced in the apartments at Strandgade 104. An acoustic ceiling in a listed building must not only meet modern sound standards; it must also integrate respectfully with the building’s history. Our solution here does exactly that. We are proud to be part of a project where preservation and renewal meet in perfect harmony. Are you interested in a smooth acoustic ceiling for a listed building? Contact us or one of our installers to learn more about how we can help you achieve excellent acoustics and beautiful aesthetics while preserving the unique details of a listed property. Architect: David ThulstrupDeveloper: Falk-Rønne & Kierkegaard and partner ArthaInstaller: DK Akustik Find an installer near you More references See our other references here.
Good acoustics at the Workers’ Museum in Copenhagen
Good acoustics at the Workers’ Museum in Copenhagen This article was written by Frank Ulstrup for Byggematerialer.dk, issue no. 116 (November 24, 2022). In 2015, Hz Acoustic ApS set out to develop high-quality acoustic systems that everyone could afford. Today, the company supplies solutions for everything from private homes to Christiansborg Palace – including the Workers’ Museum in Copenhagen. Since 1879, the former meeting hall of the labor movement – now the Workers’ Museum on Rømersgade – has echoed with workers’ songs and rousing speeches. But it’s unlikely that the acoustics ever sounded as good as they do today, following a comprehensive restoration of the museum’s central rooms. In addition to fresh paint and a new lighting and climate control system, several of the spaces have now been fitted with acoustic ceilings that reduce reverberation by 70-80%. A sustainable solution And that is far from insignificant when hosting fiery speeches – or, as is the case with the museum today, welcoming lively school classes, says Helge Hansen from the Frederikshavn-based company, Hz Acoustic ApS. His company provided the solution – and a solution was certainly needed: – I can hardly imagine what the acoustics were like in there before, with all those large, hard surfaces,” he says with a smile, explaining that the current solution, Hz Dual, consists of panels and plaster developed by the company itself: – At the Workers’ Museum, we have chosen an acoustic panel consisting of a mineral wool board laminated with a specially designed 10 mm waterproof glass granulate board. In addition, there is the acoustic plaster, which is made from recycled cellulose fibers and has an extremely fine surface. Together, this solution not only provides excellent acoustic properties but also creates a completely smooth surface that is very easy to repair,” he explains 20 years experience Helge Hansen has more than 20 years of experience working with acoustic solutions but only founded Hz Acoustic seven years ago. Since then, he and his team have been dedicated to developing products that surpass the existing options on the market. And looking at the company’s reference list, it seems they have achived their goal. Numerous buildings in Norway and Germany – as well as wide range of projects in Denmark – have had their acoustics improved using various Hz systems. Better acoustics for everyone Helge Hansen points to several key factors when explaining the success: “Our goal has really been to make good acoustic solutions financially accessible to everyone, and with a price per square meter for an installed panel ranging from 500 to 1000 DKK + VAT, I think we have succeeded,” he says, continuing: “Additionally, it’s of course a sustainable product, cellulose-based, and therefore doesn’t pollute or burden the environment in the same way as, for example, quartz-based alternatives. I believe this is also one of the reasons why our products are in high demand when it comes to listed and heritage buildings,” says Helge Hansen. Find an installer near you Hz Dual At the Workers’ Museum in Copenhagen, we used our Hz Dualacoustic panels together with Hz Acoustic Plaster 03.This panel was particularly well suited for the project because the building is listed. With Hz Dual, you get an acoustic solution that leaves only eight small screw holes per square meter, which means the underlying structure can be preserved – an essential requirement in protected buildings. Should the acoustic ceiling ever need to be removed, the original surfaces can be easily restored. More references See our other references here.