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Sound insulation & room acoustics

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Special solutions

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Whether a timber frame house, tiny house yurt, sauna or van conversion - we offer a healthy insulation solution for all projects.

Products for sound-absorbing ceiling insulation:

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ISOLENA Optimal
Optimal insulation roll
ISOLENA Optimal
ISOLENA Optimal
Solid sound insulation
Thickness: 30 - 140 mm
Fire behaviour: D-s2, d0
Length-related flow resistance: r = 4.1 kPa-s/m²
Typical areas of application: Interior fittings, standard ceilings, smaller rooms, private houses
Product details
ISOLENA Optimal Plus
Optimal Plus insulation roll
ISOLENA Optimal Plus
ISOLENA Optimal Plus
The standard in sound insulation
Thickness: 30 mm, 60 mm
Fire behaviour: D-s2, d0
Length-related flow resistance: r > 5 kPa-s/m²
Typical areas of application: Educational buildings, rooms with increased language comprehension requirements
Product details
ISOLENA clamping felt
Insulation roll clamping felt
ISOLENA Klemmfilz
ISOLENA Klemmfilz
For demanding acoustic solutions
Thickness: 30 - 80 mm
Fire behaviour: D-s2, d0
Length-related flow resistance: r = 10.2 kPa-s/m²
Typical areas of application: Music rooms, multi-purpose halls, high-quality interior walls
Product details
ISOLENA sheep's wool felt
Sheep's wool felt
ISOLENA sheepwool felt
ISOLENA sheepwool felt
Highest acoustic + fire protection values
Thickness: 9 mm
Fire behaviour: C-s2, d0
Length-related flow resistance: r = 29.5 kPa-s/m²
Typical areas of application: Buildings with high fire protection requirements, escape routes, large buildings
Product details

Healthy acoustic ceilings with ISOLENA sheep's wool as the perfect acoustic inlay

Suspended acoustic ceilings are now standard in schools, nurseries, offices and public buildings, and they are also becoming increasingly popular in single-family homes. They reduce reverberation times, improve speech intelligibility and create feel-good spaces - both acoustically and climatically.

Acoustic ceiling with Klemmfilz (Imge TEAM 7)

Your advantages with natural ISOLENA sound insulation as an acoustic inlay:

Technology & performance:

  • Top sound absorption from just 30 mm - with tested αw and flow resistance values
  • Material savings - Same acoustic performance as with 50 mm mineral wool
  • Space-saving solution - Low installation height, ideal for low suspensions

Processing & installation:

  • Simple, quick installation - Ideal for overhead installation when retracting into ceilings
  • No fibre dispersion - Pleasant processing without protective clothing, without itching or coughing
  • No additional dust protection membrane necessary- Saves time, effort and material

Health & indoor climate:

  • Permanent air purification - perpetual and natural, without any reduction in performance
  • Pollutant-free - Proven to have no chemical additives, no VOCs, no microplastics
Sustainability & promotion:
  • Recyclable natural insulating material - CO₂-saving, with excellent eco-balance
  • Certified & eligible for funding - natureplus®, EPD, QNG-ready, EU taxonomy-compliant

Sound absorption tested acoustic ceilings with 30mm ISOLENA Optimal insulation layer:

Sound absorption 30 mm ISOLENA Optimal

Acoustic ceiling with ISOLENA sheep's wool (Image: Vogl Deckensysteme GmbH)

Numerous structures possible

Tested acoustic ceiling systems with ISOLENA

Can be flexibly combined with standard systems: Whether wooden slats, Vogl acoustic panels, Knauf or Heradesign - ISOLENA fits.

Whether classic acoustic panelled ceilings with various hole patterns, wooden slats or design systems: our acoustic insulation can be combined with the most common panel systems. For many systems, there are already tested structures with ISOLENA sheep's wool.

View system structures

Proven in practice

Acoustic ceilings in the TEAM 7 Headquater

» During the construction of the TEAM 7 head office sustainability was crucial - which is why ISOLENA was chosen for the acoustic ceilings.

An unforgettable image: construction workers resting in the sheep's wool during their lunch break. A moment that says more than any brochure: No itching, no scratching, no flying fibres - a strong sign for healthy living. «

DI(FH) Alexandra Gierlinger, Matulik Architects

DI(FH) Alexandra Gierlinger (Photo: Barbara Ziegelböck)
Acoustic ceiling for Havelländer Ring kindergarten, Berlin (DE)

Learning naturally, being active in a healthy way

Room comfort through healthy insulation for educational buildings and sports facilities

ISOLENA offers acoustic and insulation solutions for universities, schools and nurseries for healthy and sustainable room quality.

From acoustic ceilings and wall and floor insulation to special joint solutions: ISOLENA sheep's wool combines strong insulation performance with healthy indoor air and proven sustainability - ideal for rooms where well-being and concentration count.

solutions in education and sport
Naturally good sound

You’ll find sheep’s wool in these acoustic ceilings:

Dante Gymnasium reference with copyright
Dante Grammar School, DE
Dante Grammar School, DE

In the classrooms of the Dante Grammar School, ISOLENA Optimal Plus behind 600 m² of expanded metal ceiling ensures a pleasantly natural indoor climate and a calm, concentrated learning atmosphere - so that nature can also be felt inside.

Client: LH Munich, Building Department H5, Planning: Klaus Friedrich, Dipl. Ing., DE

Marienberg school campus
Marienberg school campus, AT
Marienberg school campus, AT

As part of the general refurbishment, Maria Electa House was fitted with 849m² Optimal Plus sheep's wool insulation in the suspended acoustic ceilings. The building offers space for six classrooms and guarantees an excellent indoor climate thanks to the natural insulation.

Client: Diocese of Feldkirch, Planning: Fink Thurnher Architekten

TEAM7 company headquarters
TEAM 7 World, AT
TEAM 7 World, AT

A sustainable and forward-looking building has been created with the TEAM 7 brand world. ISOLENA and Silentum products provide sound insulation and sound absorption.

Client: TEAM 7 Natürlich Wohnen GmbH, Architect: Matulik, Realisation: Wiehag Bau

Jazz Campus
Jazz Campus, CH
Jazz Campus, CH

The Jazz Campus Basel is a place where music comes alive. From the practice room to the recording hall - the rooms are realised at the highest level in terms of acoustics and design. In line with the requirements, ISOLENA clamping felt was installed in the acoustic ceilings, providing excellent sound insulation and natural room sound.

Client: Habitat Foundation, Levedo Foundation: Georg Hasler, Planning: BUOL & ZÜND, CH

Weigl break room
Weigl break room, AT
Weigl break room, AT

The products Optimal Plus and Premium were used as acoustic absorbers in the ceiling and walls of the Weigl break room. "The result is impressive: these measures have created a pleasant room climate that makes a noticeable contribution to the feel-good atmosphere," reports Anton Sageder.

Client: Weigl Aufzüge Ges.m.b.H & Co. KG, AT

Reference-FIH-District Chamber of Agriculture-LM-4829
District Chamber of Agriculture, AT
District Chamber of Agriculture, AT

The information building of the District Chamber of Agriculture and the FIH Ried sends a clear signal in favour of regional value creation. Through the use of wood and 250 m³ sheep's wool .

Client: District Chamber of Agriculture & FIH Ried, Architects: Fink Thurnher ZT GmbH

Bludesch Children's Campus
Bludesch Children's Campus, AT
Bludesch Children's Campus, AT

The municipality of Bludesch favours low-emission, resource-conserving and energy-efficient construction. The children's campus, one of the most sustainable municipal buildings in Vorarlberg, was built according to the highest ecological criteria and uses 970 m² of sheep's wool insulation in the acoustic ceilings.

Client: Municipality of Bludesch, Planning: gruber locher architekten zt gmbh, AT

Egg secondary school
Egg secondary school, AT
Egg secondary school, AT

Modern teaching meets natural materials at Egg secondary school. ISOLENA Optimal sheep's wool insulation in the suspended acoustic ceilings ensures the best acoustics and a pleasant room climate - ideal conditions for learning in a natural environment.

Client: market town of Egg, planning: xander architektur zt gmbh, AT

Reininghaus primary school
VS Reininghaus, AT
VS Reininghaus, AT

With 20 classes, VS Reininghaus is one of the largest schools in Styria and also a place that combines sustainability and well-being - certified with the klimaaktiv Gold Standard. As part of the innovative educational campus, 2,300 m² of acoustic ceiling with Sheep's wool insulation for an ideal room and school climate.

Client: City of Graz, Architect: dreiplus Architekten ZT GmbH, AT

Reference Kindergarten WZA
Kindergarten Waizenkirchen, AT
Kindergarten Waizenkirchen, AT

In the regional kindergarten project, ISOLENA Premium, Optimal & Optimal Plus were used both in the attic, in the transom walls and in the acoustic ceiling. To optimise the acoustics, Silentum panels were installed in the group rooms.

Client: Municipality of Waizenkirchen, Architect: former architectural office Englmair, Realisation: Swietelsky AG, Thallermayr Gesellschaft m.b.H.

Infanteriestrasse primary school
Infanteriestraße primary school, DE
Infanteriestraße primary school, DE

The city of Munich has enshrined in law that the city's building stock should be as climate-neutral as possible. ISOLENA Optimal Plus sheep's wool insulation makes a contribution to this in this Munich primary school as an insulating layer in the suspended acoustic ceilings.

Client: City of Munich, Planning & realisation: Behnisch Architekten

Reference listening room Thomastik-Infeld_neu2
Listening room Thomastik-Infeld, AT
Listening room Thomastik-Infeld, AT

As part of the "Thomastik-Infeld listening room" project, the test room for the acoustic evaluation of strings for stringed instruments was redesigned. To optimise the room acoustics and ensure precise sound reproduction, ISOLENA Premium sheep's wool insulation was used to backfill the ceiling elements and in the wall box.

Client: Thomastik-Infeld, acoustician: Thomas Mayer

View all acoustic references
naturally well advised:

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Whether you are an architect, fabricator or retailer - we support you with expertise, tested solutions and honest advice. You will receive answers, inspiration and suitable products made from sheep's wool. Sustainable. Effective. From a single source.

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