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CO2-binding building materials

Energy-efficient, bio-based and renewable hemp insulation

6500 m3 hemp insulation

Ekolution Hemp fibre insulation is a key component of an Earth Shot project in Bålsta that explores ways to lower the carbon footprint of the built environment.
Hemp Insulation C600

From seed to insulation in 150 days

Binds -79 kg CO2 per m3
The rapid growth cycle of industrial hemp means that the net effect for CO2 binding is direct, giving impact today.

Products

Wooden joist board Hemp c450, c600

Hemp fibre insulation board for wooden frame, width 425 mm or 575 mm. Used as insulation in building envelopes and internal structures such as exterior walls, interior walls and beams.

Binds -79 kg CO2 per m3
Binds -79 kg CO2 per m3

Steel joist board
Hemp c450, c600

Hemp fibre insulation board for steel joists, width 470 mm or 620 mm. Used as insulation in building envelopes and internal structures such as exterior walls, interior walls and beams.

Wooden rule board Hemp c450, c600

Width 425 mm or 575 mm

GWPall= - 69 kg CO2 eq/m3

Steel regular disc Hemp c450, c600

Width 470 mm or 620 mm

GWPall= - 69 kg CO2 eq/m3

A truly sustainable material in every way

Climate

Hemp fiber insulation binds more CO2 in the material than is released throughout the manufacturing process.

Energy

The thermal insulation capability together with excellent heat storage capacity provides a low energy consuming insulation material.

Health

Hemp insulation is pleasant to work with, and does not irritate the skin or respiratory system. A natural material for higher quality natural indoor climate.

Climate

The hemp fiber insulation binds more C02 in the material than is disposed of during the entire manufacturing process.

Energy

Thermal insulation performance together with heat capacity provides a lower energy consumption

Health

The insulation is pleasant to work with, does not irritate the skin or respiratory system, pleasant to live around.

Chose Ekolution® Hemp fiber insulation for construction projects: bio-based, energy efficient, CO2-negative and cost-effective.

Hemp for your project

Hemp is an environmentally friendly and versatile raw material that can be used in a vast variety of commercial and industrial applications.

Feel the hemp - Order a sample

Fire class D s1 d0
Sound absorption class B

Binds -79 kg CO2 eq/m3

Grow hemp with Ekolution

Our farmers provide us with the raw material for us to process the building materials of the future. Cultivation of industrial hemp yields up to 12 tonnes of biomass per hectare and provides cellulose, wood matter and high quality fibre material.

Hemp bedding for animals

Launches in Q4 2024 - Pre-book your hemp shives today

EPD - Hemp fibre insulation

In January 2022, Environmental Product Declaration (EPD) requirements were introduced. Take a look at Ekolution hemp fibre insulation® - the world's first EPD for hemp fiber insulation.

Environmental Product Declaration - Ekolution hemp fibre insulation

Environmental product declaration

Read the EPD

Introducing ERW GreenWall

RISE - Type approval certificate

ERW GreenWall is fully certified. Type approval is a national certification scheme for assessment and verification of the compliance of construction products with requirements in the Swedish building regulations.
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Acoustic test

Air noise insulation measurements for ERW GreenWall have been carried out according to SS-EN ISO 10140-2:2021 and evaluated according to SS-EN ISO 717-1:2020. Measured noise reduction is in the range of 44 dB - 56 dB.
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Fire Test

ERW GreenWall is tested for fire resistance at RISE according to the accredited test methods EN 1364-1:2015 and EN 1363-1:2020 and, where applicable, EN 1363-2:1999. Measured fire resistance EI30-EI60
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Emission test

ERW GreenWall constituent components consist of renewable and recycled materials tested by RISE for harmful emissions such as VOCs and formaldehyde according to SS-EN ISO 16000-9:2006
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Type approval

ERW GreenWall complies with the requirements of Chapters 8, 4 § 2 and 5 PBL in the respects specified in this type-approval and is therefore approved under the provisions of BBR section fire resistance 5:231 and air sound insulation 7.
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Acoustics testing

Air noise insulation measurements for ERW GreenWall have been carried out according to SS-EN ISO 10140-2:2021 and evaluated according to SS-EN ISO 717-1:2020. Measured noise reduction is in the range of 44 dB - 56 dB.
Read PDF

Fire Testing

ERW GreenWall is tested for fire resistance at RISE according to the accredited test methods EN 1364-1:2015 and EN 1363-1:2020 and, where applicable, EN 1363-2:1999. Measured fire resistance EI30-EI60
Read PDF

Emission testing

ERW GreenWall constituent components consist of renewable and recycled materials tested by RISE for harmful emissions such as VOCs and formaldehyde according to SS-EN ISO 16000-9:2006
Read PDF

ERW GreenWall

ERW GreenWall is a interior wall system that has 83% lower climate impact and noise reduction 44-56 dB compared to a traditional interior wall.

ERW GreenWall consists of Swedish-produced products that contain both bio-based and recycled materials. Created for commercial projects, public and residential projects. Type approved with certificate number C900856 and accredited by RISE with accreditation number 1002.

Developed together with our partners: Recoma, Wood Tube and AMF Fastigheter in Sweden.

Read more about
ERW GreenWall

Environmental product declaration

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Frequently asked questions and answers

What are the advantages of using hemp fiber insulation?

The benefits of using hemp fiber insulation are many and extensive. Firstly, it has a low thermal conductivity (lambda), which means that it effectively reduces heat transfer and helps maintain a constant indoor temperature. Its high specific heat capacity also makes it particularly effective at storing and releasing heat over time, resulting in a more even and comfortable indoor temperature. Another significant advantage is the hemp fiber insulation's ability to buffer moisture. By absorbing and releasing moisture into the air, it helps regulate indoor humidity levels, creating a more comfortable and healthy environment. In addition, this moisture buffering helps reduce the risk of mold and mildew formation in the building.Another advantage is that hemp fiber insulation has no harmful emissions and is very pleasant to handle. It does not scratch and is therefore often appreciated in the workplace by fitters and craftsmen. Emission tests show very low emissions of harmful substances, which is due to the fact that the insulation does not consist of any harmful substances initially. This combination of properties makes hemp fiber insulation an attractive and durable choice for insulation needs.

Is hemp legal to grow and use for construction purposes?

Yes, it is legal to grow industrial hemp in many countries around the world, including several countries in Europe, North America and Asia. Industrial hemp is a variant of the hemp plant that is intended for industrial use and contains very low levels of the psychoactive compound THC (tetrahydrocannabinol), which is the substance that provides the notorious “high power” associated with recreational purposes.In Sweden, the cultivation of industrial hemp has been legal since 2003, following a law change that allowed the cultivation of the hemp plant for industrial use. To grow industrial hemp in Sweden, it is required that the grower use seed varieties approved by the Swedish Environmental Protection Agency and that a notification about the cultivation be submitted before it starts. The Swedish Environmental Protection Agency then carries out random sampling and checks that the registered seed variety is used. There are also rules and regulations governing the handling and use of industrial hemp to ensure that it is used legally and responsibly. Rules and laws surrounding the cultivation of industrial hemp vary from country to country and may be influenced by national laws, international agreements, and local regulations. In many cases, a permit or license is required to grow industrial hemp, and there may be regulations regarding the location of the crop, the handling of the plants, and how the hemp plant may be used. It is important for those interested in growing industrial hemp to understand and comply with the specific laws and regulations that apply in their jurisdiction.

How to install hemp fiber insulation?

Ekolutions Hemp fiber insulation can be easily installed thanks to the flexibility of the insulation material and is user-friendly for workers to work with. It is recommended to cut the insulation with approximately 20 mm "overdimension" to ensure a good attachment to the structure and thus achieve optimal installation performance.

To install Ekolution Hemp fiber insulation, follow these steps:

1. Measure the area where the insulation will be installed to determine how much hemp fiber insulation you need.

2. Be sure to take into account any gaps or spaces between the insulation and the wall or ceiling structure.

3. Prepare the area for installation by removing any old insulation or debris and making sure the surface is clean and dry.

4. Use a handsaw/knife with a "wavy teeth blade" or an insulation saw from FESTOOL ISC 240 to cut the hemp fiber insulation with approximately 20 mm oversize so that it can be easily flexed into the space.

5. Position the insulation between the joists and gently compress both sides. This allows the insulation to take advantage of its “springy effect” and fit perfect between the joists. When it returns to its original shape, it will fit  against the joists and reduce the risk of any "cold bridges". Be sure to install the necessary vapor barriers or thermal membranes to ensure that the insulation works effectively. Consult us or your local building codes and professionals to choose the right type of wind and vapor membranes.

In summary, installing Ekolution hemp fiber insulation is a relatively simple process that most home owners with basic craftsmanship skills can perform. It is important to follow instructions and take appropriate safety precautions when installing any type of insulation. For more information on mounting please see the assembly instructions for Ekolution hemp fiber insulation or drop us an email.

What types of buildings are suitable for hemp fiber insulation?

Ekolution® Hemp fiber insulation is an adaptable and versatile product suitable for a variety of applications in construction and insulation projects. For buildings, the insulation is suitable for various parts of the above-ground climate shell, such as interior walls, outer wall, intermediate joists and roof structures. More detailed suggestions for suitable construction parts can be found in the “Building Systems” section to make it easier for users to choose the right insulation solution for their specific needs.

However, there are some designs in which the use of hemp fiber insulation should be avoided. It is especially true for unprotected structures with high moisture pressure, such as exposed external insulation or insulation in basements where the risk of prolonged exposure to moisture is high. In addition, it is less appropriate to use hemp fiber insulation in constructions where the main function of the insulation is fire protection, especially if the fire classification requires an insulation with higher fire resistance than the hemp fiber insulation can offer (e.g. fire class C or higher).

By carefully considering which designs and uses are suitable for Ecolution hemp fiber insulation and avoiding the limitations mentioned above, one can ensure that the insulation works optimally and contributes to the creation of energy-efficient and sustainable buildings.

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Building by building, we reduce the CO2 impact of the real estate industry on our climate

640

hectares of hemp farmed in Skåne 2024

17300

tonnes of CO2-binding potential (GWPbio)

19800

tonnes of saved CO2 EQ