Why choose the hemp block for your projects ?
The IsoHemp hemp block is particularly suited for the construction of residential houses, insulating existing walls from the inside or outside, as well as for industrial and apartment partitioning.
- It allows achieving low-energy, very low-energy, and passive standards.
- It has technical approval and benefits from all necessary certifications according to current European standards.
Our Range.
- Origin. Range, hemp blocks :
7,5 cm, 9cm, 12 cm, 15 cm, 20 cm, 25 cm.
- Plus. Range, mortise and tenon hemp blocks :
30 cm, 36 cm.
- Technic. Range, machined hemp blocks to meet your technical requirements :
P blocks or U blocks in 30 or 36 cm thickness and prefabricated lintels.
Consult our technical data sheets for more information on our range of hemp blocks.
Technical data sheet - Hemp block - IsoHemp
Hemp blocks for naturally efficient masonry.
Technical data sheet
Product sheet - Syst'HEMP Pro - block P - IsoHemp
Used for new constructions, 30 cm or 36 cm perforated blocks allow the creation of load-bearing structures (Hempro system).
Product sheet
Product sheet - Syst'HEMP Pro - Block U - IsoHemp
The 30 cm or 36 cm U-block is a hemp block intended for new constructions, allowing the creation of a complete load-bearing structure.
Product sheet
Folder - Naturally Efficient - IsoHemp
Hemp blocks for naturally high-performance masonry.
Folder
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
5 major advantages of the hemp block for your project.
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.
All applications of the hemp block.
The IsoHemp hemp block is a lining, infill, or partition block.
Both in new construction and energy renovation, it provides solutions for all applications:
Building

No matter the construction system you choose, the hemp block will integrate perfectly into your project! The guarantee of naturally high-performance construction and insulation.
Renovating

With IsoHemp hemp blocks, you choose a bio-based and high-performance solution, suitable for all your renovation projects, whether to insulate from the inside, from the outside, or to extend with an extension.
Partitioning

In both construction and renovation, opt for IsoHemp hemp blocks for your interior masonry. Creating your walls or separating your rooms with our hemp blocks ensures lightness, simplicity, and acoustic comfort.
Implementation of IsoHemp hemp blocks.
IsoHemp hemp blocks are easily installed with thin joints of 3 mm thanks to an adapted mortar adhesive. Their lightness simplifies application, making each site faster and more accessible, whether renovating, building, or partitioning.
With IsoHemp, you're never alone.
We support you from design to on-site implementation to guarantee the success of your project.
DIY videos, implementation guide, technical data sheets—so many tools developed to guide you step by step.

What finishes for projects in hemp blocks?
Internally, for a smooth, white, ready-to-paint, and economical finish, opt for IsoHemp's natural PCS render. Lime and clay renders are also perfectly suitable.
Externally, mineral renders and all types of cladding can be applied directly onto the blocks.
A double masonry facing (bricks, local stone, etc.) is possible using a mechanical fixing.