Why choose the hemp block with Syst’HEMP Building ?
Syst’HEMP Building combined with hemp blocks provides an optimal solution for large-scale constructions.
Hemp blocks create a homogeneous and high-performance envelope, ensuring exceptional thermal and acoustic insulation.
Suitable for urban renovations, this system allows for the modernization and insulation of existing structures while reducing the overall carbon footprint.
Additionally, it offers great architectural freedom by combining flexibility and performance in complex projects.

The advantages of hemp blocks in a Poste-Platte structure.
- Enhanced thermal and acoustic insulation: Maintain optimal comfort in large buildings while reducing noise pollution.
- Adaptability to large projects: Ideal for offices and multi-residential complexes, hemp blocks perfectly integrate into complex structures.
- Fire protection: Secure your constructions with excellent fire resistance, up to 4 hours for blocks starting at 30 cm.
- Quick and durable construction: The lightness and ease of installation of hemp blocks allow for rapid project completion without compromising durability.
- Economic solution: Achieve savings through quick implementation and high performance.
The technical performances
of the hemp block with Syst’HEMP Building.
Hemp blocks ensure excellent thermal regulation thanks to their ability to absorb and diffuse heat. This helps maintain a constant indoor temperature, limiting variations due to external conditions.
Key technical data :
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Lambda value (λ): 0.071 W/mK
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Thermal resistance (R): up to 5.37 m²K/W for 36 cm blocks.
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Thermal phase shift: up to 23.6 hours for 36 cm blocks, reducing the impact of temperature variations.
Thanks to their permeability to water vapour, hemp blocks naturally regulate humidity, creating a healthy and consistent indoor environment.
Key technical data :
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Water vapour resistance factor (μ): 2.8.
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Equivalent diffusion thickness Sd: up to 1 m for a 36 cm block, promoting wall breathability.
Hemp blocks offer remarkable acoustic insulation, effectively absorbing and attenuating noise, for a quieter indoor environment protected from sound pollution.
Key technical data :
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Acoustic absorption (α): Coefficient of 0.85 (high sound absorption).
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Acoustic attenuation (Rw): up to 44 dB for a 36 cm block, significantly reducing external noise.
Hemp blocks are highly fire-resistant, emit no toxic fumes, and offer increased safety in case of fire.
Key technical data :
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Fire resistance: from 240 minutes for blocks of 30 cm or more to 45 minutes for 7.5 cm blocks.
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Fire reaction class: B, S1, d0. The hemp block does not emit toxic fumes or flaming droplets.
Hemp blocks are the epitome of a sustainable solution, combining remarkable longevity with a reduced environmental footprint. This bio-based material ensures reliable and environmentally friendly construction.
Key technical data :
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Bio-based and low-carbon material: Hemp is a renewable resource that helps reduce CO₂ emissions during construction.
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Exceptional lifespan: Thanks to their robustness, hemp blocks maintain their performance for decades without needing replacement.
Installing hemp blocks with Syst’HEMP Building.
- Speed and efficiency: Thanks to the ease of installation of hemp blocks, Syst’HEMP Building enables fast and efficient implementation, even for large projects.
- Turnkey solution: Whether you are an architect, client, or builder, you benefit from our technical support throughout the entire project.
Technical documentation.
Here you will find all the technical resources needed for your Syst’HEMP Building construction projects :
Installation guide - Hemp Blocks - IsoHemp
Hemp blocks for naturally efficient masonry , Hempcrete, Complementary products for hempcrete blocks.
Installation guide
Technical data sheet - Hemp block - IsoHemp
Hemp blocks for naturally efficient masonry.
Technical data sheet
Technical Approval - ATG
The Technical Approval ATG, issued by the UBAtc, is a certification that confirms our products meet the highest standards of the Belgian market.
Technical data sheet
Other sections and schematic diagrams are also available upon request.
Do you have any other questions? Contact us!

Each project is unique.
Contact us to discuss your construction or renovation project using Syst’HEMP Building.
Our team is available to advise you and support you in the realization of your large-scale projects.
Our projects with Syst’HEMP Building.
Discover our successfully completed projects using IsoHemp hemp blocks and the Syst’HEMP Building system.