Insulating materials

Natural, soft insulation materials


stroba naturbaustoffe ag
stroba naturbaustoffe ag

Thermo-Hanf

The natural insulation material Thermo-Hemp is obtained from the renewable raw material hemp, providing coolness in the summer and warmth in the winter. Thermo-Hemp is non-itchy and non-scratchy, easy to process, and has a positive carbon footprint. The good diffusion properties of Thermo-Hemp ensure automatic moisture regulation, leading to a healthy, pleasant indoor climate. Because the hemp fiber contains no protein, treatment against moths and beetles is unnecessary. Thermo-Hemp is usually supplied in mat form and is suitable for insulating roofs, walls, and floors. Whether the insulation is used in new or existing buildings, installation is straightforward for any user.



Isolena sheep's wool

The security of living in a healthy environment for generations: A sheep living outdoors couldn't be better protected with its wool, summer and winter, because the sheep's wool fiber breathes, stores, insulates, and climate-controls perfectly. Tests have shown that, in addition to these properties, sheep's wool insulation also neutralizes pollutants and dampens sound. And all in one go. No artificially produced fiber can combine all of these properties. This means that Isolena wool creates the climate zone within your four walls. In addition to insulation and climate control, Isolena wool also continuously purifies the air. Thus, a living space insulated with sheep's wool offers the highest level of health safety. Because we bear greater responsibility for our health and the environment than ever before. Let's contribute a little more to a future worth living!

Isolena wool made from 100% pure Isolena sheep's wool guarantees formaldehyde-free, healthy indoor air in schools, kindergartens, and all public and private buildings. Our unique, globally biocide-free wool protection is a must.


The IONIC PROTECT® treatment method developed by ISOLENA guarantees a biocide-free wool protection that is unique worldwide.


stroba naturbaustoffe ag

Sheep wool fiwo

From the security of living in a healthy environment for generations: A sheep living outdoors couldn't be better protected with its wool, summer and winter alike, because sheep's wool fibers breathe, store, insulate, and regulate air conditioning perfectly. Tests have shown that, in addition to these properties, sheep's wool insulation also neutralizes pollutants and dampens sound.

stroba naturbaustoffe ag

stroba naturbaustoffe ag

Stroco Coconut

The coconut fibers are retted in mud for about 5 to 6 months (natural impregnation), then rinsed and beaten. These fiber nets can be used directly or parallelized, combed, and spun.


The coconut fiber is up to 30 centimeters long and very abrasion-resistant as well as resistant to moisture, rot and weather influences.

Application: The roof and wall panel provides good thermal insulation in timber frame construction. Properties:

  • Pressure and break-resistant
  • Bacteria and fungi safe
  • No vermin infestation
  • Excellent insulation properties
  • Skin-friendly
  • Long shelf life

stroba naturbaustoffe ag

Cork insulation granules


Our cork granules are a natural, environmentally friendly material with a wide range of uses. They are ideal for insulation, flooring, and decorative applications. Cork granules impress with their insulating properties, durability, and ability to regulate moisture.


Advantages of cork granules:

  • Environmentally friendly: Made from renewable raw materials and fully recyclable.
  • Efficient insulation: Excellent thermal and sound insulation.
  • Durable and robust: Resistant and hard-wearing.
  • Versatile: Ideal for various construction and decoration projects.






stroba naturbaustoffe ag

Blown-in insulation & fills / Isofloc

Today's buildings must deliver four things: thoughtful planning, sophisticated architecture, and high cost-effectiveness. While healthy, comfortable living is paramount in private homes and residential developments, functionality for motivated and efficient work is essential for industrial and administrative buildings. Excellent insulation is essential in all areas. Insulating with isofloc creates a good, healthy indoor climate, reduces energy costs and emissions, and is safe and economical.


stuffing material

Our natural stuffing materials for house construction – hemp, sheep's wool and coconut wool – offer you an environmentally friendly and efficient solution for your construction projects.

Advantages of our stuffing materials:

  • Environmentally friendly: Made from renewable raw materials and biodegradable.
  • Efficient insulation: Excellent thermal insulation for a pleasant indoor climate.
  • Durable and robust: Resistant to environmental influences.
  • Healthy living environment: humidity-regulating and pollutant-free.



stroba naturbaustoffe ag

Impact sound insulation


Our impact sound insulation offers you an environmentally friendly and effective solution for reducing noise in your home. We offer high-quality impact sound insulation made from hemp felt, sheep's wool, coconut fiber, and Gutex Happy Step wood fiber.



Advantages of our impact sound insulation:

  • Environmentally friendly: Made from renewable raw materials and biodegradable.
  • Efficient sound reduction: Excellent sound insulation for more peace and comfort.
  • Durable and robust: Resistant and durable.
  • Healthy living environment: pollutant-free and regulating.



Hard insulation materials

stroba naturbaustoffe ag

Cork Stroba steam cork

The cork oaks constantly produce a renewed layer. The special properties of cork arise naturally from the structure and chemical composition of the cell walls. In the cellular structure, each cubic centimeter contains between 30 and 42 million cells, whose intercellular layers consist of five parts: two made of cellulose, which line three air-filled cell layers, and two more made of a hard and waterproof material. The fifth is woody and performs the function of maintaining the structure and the necessary rigidity. These are just some of the factors that give cork its remarkable and beneficial properties.



stroba naturbaustoffe ag

Multipor mineral insulation board

Those who want to insulate cleverly today insulate with ecological building materials. Multipor mineral insulation boards are manufactured in an environmentally friendly manner from the mineral raw materials lime, sand, cement, and water. Mineral-based yet fiber-free, Multipor mineral insulation boards offer a new quality of thermal insulation: solid yet highly thermally insulating. This makes a consistently solid construction possible. Furthermore, the boards are non-combustible, dimensionally stable, pressure-resistant, and water-repellent.