Alle har ret til god akustik

Hz Acoustic Ceiling at The Workers Museum in Copenhagen
Hz Acoustic Ceiling at The Workers Museum in Copenhagen
Hz Acoustic Ceiling at The Workers Museum in Copenhagen

Denne artikel er skrevet af Frank Ulstrup til Byggematerialer.dk nr. 116 (24. november, 2022).

I 2015 satte Hz Acoustic ApS sig for at udvikle akustiksystemer af høj kvalitet – og som alle havde råd til. I dag leverer virksomheden systemer til alt fra almindelige boliger til Christiansborg – heriblandt Arbejdermuseet i København.

Der er fra 1879 blevet sunget kampsange og holdt masser af opildnede taler i arbejderbevægelsens gamle forsamlingshus – det nuværende Arbejdermuseum i Rømersgade, København.

Men det er ikke sikkert, at det har lydt så godt, som det ville gøre i dag, hvor bygningens centrale dele netop er blevet restaureret. Ud over frisk maling og et nyt belysnings- og indeklimasystem, er flere af lokalerne nemlig også blevet udstyret med akustiklofter, der dæmper efterklangen med 70-80 %.

En bæredygtig løsning

Og det er langt fra uvæsentligt, når man lægger hus til brandtaler – eller som det er tilfældet med museet i dag – har masser af livlige skoleklasser på besøg, siger Helge Hansen fra Frederikshavn-virksomheden, Hz Acoustic ApS.
Det er hans virksomhed, der har leveret løsningen – og en løsning var der brug for:

– Jeg tør næsten ikke tænke på, hvordan akustikken har været derinde tidligere med alle de store og hårde overflader, smiler han og fortæller, at den aktuelle løsning, Hz Dual, består af plader og puds, som virksomheden selv har udviklet:

– På Arbejdermuseet har vi valgt en akustikplade bestående af en hård mineraluldsplade, der er lamineret med en specialfremstillet 10 mm vandfast glasgranulatplade. Dertil kommer akustikpudsen, der er baseret på genanvendte cellulosefibre, og som har en ekstremt fin overflade. Tilsammen er det en løsning, der ud over de akustiske egenskaber, giver en helt glat overflade, som også er meget let at reparere, lyder det.

Hz Acoustic Dual 009 Akustikplade
 

20 års erfaring


Helge Hansen fortæller, at han har arbejdet med akustikløsninger gennem mere end 20 år, men at han først for syv år siden, grundlagde Hz Acoustic. Siden da har han sammen med sine medarbejdere arbejdet på at udvikle løsninger, der var endnu bedre – og billigere – end de eksisterende på markedet.

Og kigger man på virksomhedens reference liste tyder meget på, at man er nået i mål. I hvert fald er byggerier i bl.a. Norge og Tyskland – foruden en lang række byggerier i Danmark blevet akustisk forbedret ved brug af de forskellige Hz-systemer.

Bedre akustik til alle


Helge Hansen peger selv på en række konkrete forhold, når han skal forklare succesen:

– Vores mål har egentlig været at gøre gode akustikløsninger økonomisk tilgængelige for alle, og med en kvadratmeterpris for en monteret plade på mellem 500 og 1000 kr. + moms er det noget, jeg synes, vi er lykkes med, siger han og fortsætter:

– Dertil kommer selvfølgelig, at det er et bæredygtigt produkt, der er cellulosebaseret og dermed slet ikke sviner og belaster miljøet på samme måde som f.eks. de kvartsbaserede alternativer. Det sidste tror jeg også er én af grundene til, at vores produkter er meget efterspurgte, når det drejer sig om fredede og bevaringsværdige bygninger, siger Helge Hansen.

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Gypsum acoustic ceiling in a detail-rich villa in Denmark

April 20, 2026 No Comments

Gips akustikloft i detaljerig villa i Viby ved Aarhus – Details, materials, and acoustics in perfect balanceIn a private villa in Denmark, a home has been created where every detail is carefully considered – from materials and colors to lighting, acoustics, and integrated solutions. It is a home where quality and aesthetics go hand in hand, and where a minimalist expression is achieved through understated yet precise design choices. At Hz Acoustic, we supplied a gypsum acoustic ceiling consisting of Hz Plus acoustic panels, finished with Hz Acoustic Plaster 03, creating a smooth and uniform surface without visible joints. The installation was carried out by our partner DK Akustik, ensuring a solution where both function and finish are executed to a high standard. Click here to read more about the project A ceiling that allows the details to stand outIn this villa, the ceiling is not designed to attract attention. Instead, it acts as a calm and cohesive surface that allows the materials and details of the interior to take center stage. The interior features Danish design classics, a bespoke kitchen, and carefully selected colors, all contributing to a warm and refined atmosphere. Here, the role of the ceiling is to support the overall design rather than dominate it. With the smooth finish of Hz Acoustic Plaster 03, the ceiling appears as a continuous surface that connects the spaces and creates visual calm, while also ensuring a comfortable sound environment throughout the home.Integrated solutions with high precisionOne of the defining characteristics of the project is the extensive use of integrated solutions, where technology and design are seamlessly incorporated into the ceiling.Recessed spotlights and integrated LED lighting tracks have been plastered into the ceiling, appearing as a natural part of the surface. The lighting becomes an integral part of the architecture, where fixtures do not interrupt the ceiling but instead support the atmosphere and function of the space. These solutions require a high level of precision in both planning and execution, resulting in a ceiling where technical installations are almost invisible within the overall design.The meeting of raw and refined materialsA notable detail in the villa is the transition between the ceiling and the raw concrete core structure. Here, a shadow gap creates a sharp and elegant junction between the smooth acoustic ceiling and the more robust concrete surface. The contrast between the refined plastered ceiling and the raw concrete creates a compelling architectural interplay, where the materials highlight each other. It is in these details that the high quality of the project becomes particularly evident. Acoustics, aesthetics, and technical performance in balanceIn modern homes with open spaces, hard materials, and large glazed areas, good acoustics are essential for everyday comfort. With a gypsum acoustic ceiling from Hz Acoustic, reverberation is effectively reduced without compromising the visual expression. In this villa in Denmark, the result is a home with a comfortable sound environment, where the architecture remains clear and defined. The ceiling connects the spaces and supports the overall design without drawing attention. At Hz Acoustic, these are exactly the types of projects that demonstrate how acoustics, aesthetics, and technology can work together as one.Would you like to learn more about our gypsum acoustic ceilings for private homes?Contact us or one of our installers – we are happy to help you create a solution where acoustics and design work together. Products: Hz Plus 027+ and Hz Acoustic Plaster 03Installer: DK Akustik Find an installer near you More references See our other references here.

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Acoustic ceilings in historic surroundings at Nordstens Hus in Hillerød

April 15, 2026 No Comments

Acoustic ceilings in historic surroundings at Nordstens Hus in Hillerød – From industrial factory to modern workspace with respect for detail In the centre of Hillerød’s pedestrian street, you will find Nordstens Hus – a historic property that has been transformed into a modern shared workspace. Behind the transformation is Frederiksborg Gruppen, which, with more than 65 years of experience, has delivered a project where past and present come together with great respect for the building’s history. At Hz Acoustic, we have supplied acoustic solutions for the project, where the ambition was clear: to create modern comfort and good acoustics without compromising the original architectural details. The result is a building where acoustic ceilings form a natural part of the architecture and support the overall spatial experience. Click here to read more about the project A building with history in its walls Nordstens Hus, located at Slotsgade 13–15, dates back to 1886, when the building served as the headquarters of Nordsten’s factory – one of Northern Europe’s leading manufacturers of seed drills. For more than 100 years, products were developed here and exported worldwide. Today, the building has been carefully restored in collaboration with the National Museum of Denmark, and many original details have been preserved. These include exposed beams, high vaulted ceilings, and historical features such as a framed ceiling painting that offers a unique glimpse into the building’s origins in the 19th century. Projects like this require a careful balance between old and new. Acoustic ceilings that respect the architecture To ensure a good working environment in the new office spaces, we supplied a combination of Hz Plus 027+ and Hz Basic 007, both finished with Hz Acoustic Plaster 03. The solution creates a smooth, seamless acoustic ceiling that integrates discreetly into the historic surroundings. The ceiling acts as a calm backdrop, allowing the original details to stand out rather than competing with them. In spaces with exposed beams and high ceilings, acoustics can often be a challenge. Here, the acoustic ceiling helps to reduce reverberation and create a comfortable sound environment—an essential factor in modern office spaces where focus and collaboration go hand in hand. A modern workspace with a focus on community Nordstens Workspace is more than just offices. It is a dynamic environment where businesses and people meet in inspiring surroundings. With contributions from, among others, HAY, who have been responsible for the interior design, workspaces have been created to support new ways of working. Light, materials, and acoustics all play a central role in shaping the experience of the space. Frederiksborg Gruppen’s mantra – “We do things properly” – is clearly reflected throughout the project. From the overall concept to the smallest details, quality and respect for the building’s heritage are evident. A dialogue between past and present The project has been carried out by our experienced partner DK Akustik, ensuring a precise and high-quality installation. In collaboration with Møgelhøj Arkitekter, a solution has been created where modern acoustics and historic architecture work together. Nordstens Hus stands today as a strong example of how an industrial building can be transformed into a modern workspace without losing its identity. On the contrary, the building’s history has become an integral part of the experience. At Hz Acoustic, these are exactly the types of projects that demonstrate how acoustics, aesthetics, and technology can work together as one. Would you like to learn more about our acoustic ceilings for office buildings and the transformation of existing properties?Contact us or one of our installers. We will help you find the right solution for your project. Products: Hz Plus 027+, Hz Basic 007, and Hz Acoustic Plaster 03Installer: DK AkustikArchitect: Møgelhøj Arkitekter Find an installer near you More references See our other references here.

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Smooth acoustic ceiling in minimalist modern villa

March 12, 2026 No Comments

Smooth acoustic ceiling in minimalist modern villa When architecture, materials, and details come together in harmony, homes are created where aesthetics and functionality work side by side. This is exactly the case in this 430 m² modern villa in Zealand, Denmark, where homeowner Lise Henriksen and her husband have created a residence defined by a clean, minimalist style and a clear attention to detail. At Hz Acoustic, we delivered approximately 165 m² of acoustic ceiling to the home’s hall, corridor, living room, kitchen, and one of the bathrooms. Our partner Akustiknord carried out the installation, where acoustics and aesthetics have been integrated as a natural part of the architectural design. Click here to read more about the project An acoustic ceiling that supports the minimalist style In a home with such a refined and minimalist architectural expression, it is important that the ceiling does not draw attention away from the other elements of the space. For this reason, our Hz Basic acoustic panel 001 was selected. The panel consists of a 30mm mineral wool core combined with a glass granulate board. The panels are finished with Hz Acoustic Plaster 03, creating a smooth and uniform surface without visible joints. The result is a calm ceiling that appears as one continuous surface and supports the minimalist architectural language of the house. The smooth finish fits naturally into modern architecture, where lines, proportions, and materials are carefully balanced. Carefully integrated installations One of the most interesting details in the project is the plaster-integrated speakers in the kitchen and living room. The speakers are integrated directly into the ceiling and finished with acoustic plaster, making them completely invisible. For those interested in this solution, Hz Acoustic collaborates with Luxtek, a distributor of Sonance speakers that can be integrated directly into our acoustic ceilings. The speakers are installed within the ceiling and then finished with acoustic plaster, making them invisible while allowing sound to pass through the surface. The result is a discreet solution where sound technology and architecture merge without disrupting the aesthetics of the space. The project is characterised by a high level of detailing. The ceiling includes several integrated spotlights and lighting outlets, carefully positioned to provide balanced illumination throughout the rooms. Along the window sections, sharp transitions have been created at the curtain recesses, where the curtains are integrated into the architecture. These precise details reinforce the clean architectural expression of the house and contribute to a refined and cohesive result. Such detailing requires both careful planning and high craftsmanship during installation, something that in this project has been achieved through close collaboration between the homeowner, craftsmen, and installer. Acoustics as a natural part of the architecture Modern homes with large open spaces, hard surfaces, and expansive windows can often present acoustic challenges. In these environments, an acoustic ceiling plays a key role in everyday comfort. With Hz Basic acoustic panels 001 combined with Hz Acoustic Plaster 03, the ceiling effectively absorbs sound and reduces reverberation while maintaining the architectural expression. The result is a home where the sound environment remains comfortable, even in large living areas, and where the ceiling forms a natural and discreet part of the overall design. A home where the details make the difference The project at Lise Henriksen’s home is a clear example of how acoustics can be integrated into modern residential architecture without dominating the space. Instead, the ceiling acts as a refined backdrop that highlights the home’s materials, light, and architectural lines. From the invisible speakers to the precise detailing at the curtain recesses, every element has been carefully considered. At Hz Acoustic, these are exactly the types of projects that demonstrate how acoustics, aesthetics, and technology can work together as one. Would you like to learn more about our acoustic ceilings for private homes and new-build projects? Contact us or one of our skilled installers. We’ll help you find the right solution that matches your design, acoustic needs, and budget. Products: Hz Basic 001 and Hz Akustikpuds 03Installer: Akustiknord Find an installer near you More references See our other references here.

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Acoustic ceiling in new extension by Sølvsten Arkitektur

December 10, 2025 No Comments

Acoustic ceiling in new extension by Sølvsten Arkitektur When a home is expanded with a new extension, the ambition is often to create a space that feels like a natural continuation of the existing building while also adding something new: more space, more daylight, improved functionality, and a stronger architectural coherence. In this project, designed by Sølvsten Arkitektur, this balance has been achieved with great precision and the choice of acoustic ceiling plays a central role. The extension is designed as a harmonious continuation of the original house, where a subtle shift in floor level creates a refined transition between old and new. This small step generates a generous ceiling height in the new kitchen-living space, increasing both the spatial volume and the sense of lightness and movement. The large glazed openings draw daylight deeply into the room and further into the rest of the home, which makes the acoustic environment an essential part of the overall experience. Click here to read more about the project Katrine Sølvsten www.soelvsten-arkitektur.dk+45 20 44 99 18ks@soelvsten-arkitektur.dkPorsvej 6, 8220 BrabrandCVR 39466155 See our projects with Sølvsten Arkitektur here: An acoustic ceiling that supports the architectural intent A kitchen-living area with a high ceiling, hard surfaces, and expansive windows naturally places high demands on the sound environment. At the same time, the acoustic solution must not disrupt the architectural vision. To meet these requirements, the extension has been completed using a combination of Hz Plus gypsum acoustic panels and our finest Hz Acoustic Plaster 03. The Hz Plus acoustic panels ensure effective sound absorption throughout the space, including areas with high activity levels, hard materials, and strong sound reflections. On top of the panels, Hz Acoustic Plaster 03 provides a completely smooth, uniform, and elegant ceiling surface without visible joints. The result is a calm, cohesive expression that supports the architecture while maintaining excellent acoustic comfort. Together, the system creates an acoustic ceiling that enhances both the aesthetics of the room and the everyday experience – even when the kitchen is in use, the children are playing, and the family gathers in one shared space. An extension with architectural calm and material depth Sølvsten Arkitektur has worked with a refined, muted material palette in which each surface has its purpose and contributes to the tactile quality of the space. The rendered brickwork, the warm timber cladding, and the deep anodised overhang create a balanced exterior, beautifully connected to the garden through the large window sections. Inside, the same tactile approach continues. Here, the soft, organic texture of microcement meets cooler steel details, while textile elements filter the light and add a discreet atmosphere. In this interplay between the raw and the refined, the acoustic ceiling becomes a natural part of the whole. The ceiling appears as a calm, cohesive surface that ties the space together and supports the subtle, modern atmosphere that defines the extension. An acoustic ceiling with purpose The extension appears as a quiet and carefully considered architectural addition that respects the existing home while adding a new layer of contemporary functionality. Acoustics are not an afterthought here, but an integrated part of the design. By combining Hz Plus gypsum acoustic panels with Hz Acoustic Plaster 03, the family gains a smooth, seamless, and highly effective acoustic ceiling that makes the large kitchen-living area welcoming, comfortable to spend time in, and well suited for everyday life as well as social gatherings. Would you like to know more about our gypsum acoustic ceilings for private homes and new builds? Contact us or one of our skilled installers. We’ll help you find the right solution that matches your design, acoustic needs, and budget. Products: Hz Plus 027+ and Hz Acoustic Plaster 03Installer: DK AkustikArchitect: Sølvsten Arkitektur Find an installer near you More references See our other references here.

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Salling Galleriet, ARoS

Acoustic ceilings at ARoS

December 10, 2025 No Comments

Acoustic ceilings at ARoS – where art and acoustics go hand in hand. At ARoS Art Museum in Aarhus, architecture, art, and acoustics come together in two exceptional projects featuring world-class acoustic solutions delivered by Hz Acoustic. The new acoustic ceilings at ARoS form part of the museum’s major extension, which includes an underground gallery and The Dome, a Skyspace by James Turrell. The extension is designed by Schmidt Hammer Lassen, and contractor Aarsleff is responsible for the build. The elegant acoustic ceilings have been installed by our skilled partner, DK Akustik Vest. The project consists of two unique components: the open, atmospheric Art Square, leading visitors towards James Turrell’s artpiece The Dome, a Skyspace, and the underground Salling Gallery, a new 1,000 m² exhibition space for large-scale contemporary art. Click here to read more about the project A passage leading into the light In the new Art Square – the transitional space guiding visitors into Turrell’s iconic ‘The Dome, a Skyspace by James Turrell’ installation – light, volume, and acoustics are balanced with great care. Here, we supplied Hz Plus acoustic panels, finished with our Hz Acoustic Plaster 03 to create a smooth, seamless surface. The plaster is particularly well suited for organic and curved geometries, such as the circular skylight that brings daylight into the space and generates an almost meditative atmosphere. Along the walls, precisely fitted edge trims provide a sharp, refined finish that follows the gentle curve of the passage. The result is a calm, cohesive surface in which the ceiling becomes a natural part of the architecture, supporting the spatial experience rather than dominating it. At the same time, the acoustic ceiling ensures a pleasant sound environment, allowing visitors to move towards the artwork in quiet contemplation – fully aligned with the intention behind Turrell’s light installation. The Salling Gallery – 1,000 m² beneath the ground The second part of the project is the Salling Gallery, an underground exhibition hall of 1,000 square metres. Here, a raw, industrial concrete setting forms the backdrop for large-scale international contemporary art. For this space, we supplied Hz Dual 011-R acoustic panels, made from upcycled textile waste, together with Hz Acoustic Plaster 09, which also contains finely processed textile waste – including recycled bedsheets from a local laundry. The plaster is tinted and adjusted to match the architectural expression of the room, giving the surface depth and character without compromising sound absorption. The combination of recycled materials and advanced acoustic technology results in a ceiling that unites sustainability, function, and aesthetics – a perfect match for ARoS’ ambition to merge art and architecture. The acoustic ceiling improves the reverberation conditions in the large gallery and supports an environment where sound, light, and artistic immersion are in balance. The architecture frames the art rather than competing with it. An acoustic contribution to Danish cultural heritage With the expansion of ARoS and the opening of The Dome and the Salling Gallery, the museum adds a new chapter to the cultural landscape of Aarhus. For us at Hz Acoustic, it is a privilege to contribute to a project where sound, light, and materials are considered integral to the overall artistic experience. Whether in a light-filled passage or in a raw subterranean gallery, the project demonstrates how modern acoustic solutions can be adapted to any architectural expression – from the understated to the monumental. Would you like to know more about our acoustic ceilings for museums, galleries, and public spaces?Contact us – we will be happy to help you create spaces where acoustics, aesthetics, and technical performance come together. Find an installer near you More references See our other references here.

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Hz Acoustic and Denmark’s new architecture policy

November 17, 2025 No Comments

Hz Acoustic and Denmark’s new architecture policy – How we help shape the buildings of tomorrow. With Denmark’s new national architecture policy, the Ministry of Culture, together with the Ministry of Social Affairs and Housing and the Ministry of Rural Districts, sets a clear and ambitious direction for the future of construction. The policy acts as a guide for municipalities, developers, and professionals across the industry, and it emphasises one central point: we must build with care. At Hz Acoustic, we welcome this direction. The policy is not only an important step for Danish architecture; it also reinforces the values that have shaped our work from the beginning. Many of the dogmas now forming the foundation of Denmark’s architectural strategy are principles that have guided our development since the first Hz acoustic panel was produced. This article outlines the structure of the policy and highlights how Hz Acoustic actively contributes to three of its key dogmas. A policy that emphasises sustainability, transformation, and quality The national architecture policy focuses on strengthening the built environment across the country. It encourages more nature in cities, improved spatial planning, and better preservation of cultural heritage while promoting diverse housing solutions. At the same time, it highlights the importance of craftsmanship, material awareness, circular methods, and the need to care for buildings already in use. As Minister of Culture Jakob Engel-Schmidt puts it: “We must build with care. Every time we build, we shape not only the present, but equally the future.” This perspective aligns closely with wider international movements in architecture and construction – and with Hz Acoustic’s approach to acoustic solutions that support responsible and future-focussed building practices. Three dogmas, one shared mission Prioritise care and beauty 0 Maintain, renovate, and transform 0 Build circularly 0 The policy introduces eight dogmas for the architecture of the future. Hz Acoustic directly supports the first three: #1 Prioritise care and beauty Quality, universal design, and long-term durability A beautiful room is not only something you see. It is something you experience – through calmness, good acoustics, and materials that complement the architecture. At Hz Acoustic, we work from the principle that aesthetics and performance belong together. Our smooth, seamless acoustic ceilings are developed to integrate naturally into the architectural design rather than stand out as an added layer. They support universal design principles because they: ensure effective sound absorption for all users offer a clean, uncluttered visual expression that suits modern architecture provide durable, long-lasting solutions for private homes, commercial buildings, institutions, and public spaces Care and beauty also relate to craftsmanship. Our acoustic panels and acoustic plaster are designed with precision, thoroughly tested, and developed to deliver stable, long-term performance. This focus aligns directly with the intention of the first dogma. #2 Maintain, renovate, and transform Extend building lifespans and avoid unnecessary demolition One of the strongest messages in the policy is that demolition should be the last resort. More buildings must be preserved, transformed, and upgraded rather than replaced. Hz Acoustic’s solutions are well suited for renovation and transformation projects. Our acoustic ceilings can: be adhered directly onto existing structures upgrade the sound environment and the visual expression of older buildings with minimal intervention be repaired, refreshed, and maintained over time This approach enables significant aesthetic and acoustic improvements without unnecessary resource consumption. It is especially relevant for the types of renovation projects now prioritised at national level, including schools, cultural buildings, sports facilities, and older residential properties. #3 Build circularly Biobased materials and recycled content as a natural part of construction The policy calls for increased use of circular methods and biobased materials across the construction sector. This is fully aligned with the materials and systems developed by Hz Acoustic. Parts of our acoustic panels and acoustic plaster are made from 100% recycled textile waste, contributing to: lower CO₂ emissions reduced waste sent for incineration higher recycled content in construction projects products that support circular material flows For us, circularity is not a distant goal but an active part of our development process. We continue to increase the use of recycled materials and expand our product lines with solutions that support more sustainable building practices. Hz Acoustic’s role in the architecture of the future The new architecture policy highlights the important role that material manufacturers play in shaping the built environment. Solutions like ours are no longer optional; they are essential elements in a future-proof approach to construction where aesthetics, wellbeing, and sustainability are considered together. For us, the policy represents: confirmation of the direction we have already taken inspiration to accelerate the development of more circular materials an invitation to strengthen collaboration with architects, municipalities, and contractors Our ambition is to provide acoustic solutions that offer architectural value, technical performance, and long-term benefits for users and society. A national policy, a shared responsibility The policy underlines that the future of architecture is shaped locally – in municipalities, by advisors, and by the professionals building Denmark every day. Hz Acoustic aims to be an active partner in this process. As construction moves towards more circular, transformative, and carefully designed solutions, manufacturers must be at the forefront. That is the position we take. We continue to develop new systems, optimise our processes, and participate in dialogue about how our acoustic solutions can support the future direction of Danish architecture. The future is built now and it must be built with care The new architecture policy provides direction. We contribute with action. We are proud to deliver solutions that already support several of the most important dogmas for the architecture of tomorrow. We look forward to contributing to a more sustainable, more refined, and more future-ready built environment together with architects, advisors, and municipalities across the country. Would you like to learn more about how our acoustic solutions can support your projects in light of the new architecture policy? Get in touch for advice, product information, or material samples. We are happy to help you find the right solution for your next

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