FAQ
What is the K-nuffcrete block composed of?
The K-nuffcrete block consists of Kenaf core, hydrated lime,cement,aggregate and water. They are 100% natural and locally sourced raw materials.
Is the K-nuffcrete hazardous to health?
The hemp block is not hazardous to health; whether for the people who produce it, install it or benefit from it in their home. The raw materials of which it is composed are 100% natural.
Can K-nuffcrete blocks be used for new constructions?
Yes, K-nuffcrete blocks are associated with a load-bearing structure to create envelopes for new constructions. Several possibilities are possible: wooden construction, load-bearing blocks or traditional method for construction.
Can K-nuffcrete blocks be used for interior renovation?
Yes, K-nuffcrete blocks allow the interior to be renovated by keeping the inertia of the building and allowing the old walls to breathe. They are particularly suitable for the interior insulation of old brick or stone walls.
Can K-nuffcrete blocks be used for exterior renovation?
Yes, hemp blocks are perfectly suited for exterior renovation.
What are the possible finishes of K-nuffcrete blocks indoors?
The exterior finishes are varied: siding, plaster, bricks or briquettes, etc.
What are the dimensions of the K-nuffcrete block?
The K-nuffcrete block has a dimension of 600mmX200mmx100mm.
What is the maximum weight of a K-nuffcrete block?
The K-nuffcrete block has a maximum weight of 8 kilogram.
Are K-nuffcrete blocks load-bearing?
No,K-nuffcrete blocks are not load-bearing. They must be associated with a supporting structure.
How do the K-nuffcrete blocks adhere?
The K-nuffcrete blocks are laid in a thin joint with standard plaster cement or a lime-based mortar. The installation is done in a thin joint of around 3 mm using a glue comb or a notched trowel.
What thickness of joint must be created to glue the hemp blocks?
The K-nuffcrete blocks are laid in thin joints around minimum 3 mm to a maximum of 10 mm thick.
Which tool is used to cut the K-nuffcrete block?
Several cutting tools can be used :
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A Widia manual saw blade;
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An electric Alligator saw;
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A band saw (recommended for larger sites).
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Can K-nuffcrete blocks be placed on the ground?
Yes. Whether it’s a renovation or a new construction, the use of K-nuffcrete blocks on the ground makes it possible to insulate the slabs and is suitable for supporting a screed. This technical solution is fast and simple. The placed product is dry, which makes it possible to apply the finish very quickly.
What are the advantages of K-nuffcrete blocks for ground insulation?
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Excellent compressive strength (up to 8Mpa);
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Speed of execution and performance over time;
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High technical flexibility such as the application of floor heating, the application of ducts in the screed, etc.;
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Easy and fast cutting;
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Laying of insulation in just a few hours for a complete house;
Can K-nuffcrete blocks be placed on the roof?
K-nuffcrete blocks can only be placed on flat roofs. For the insulation of flat concrete roofs, it’s very easy to install K-nuffcrete blocks. Whatever the configuration, they are fast and easy to apply. Slope concrete is applied on which the waterproofing of the roof is then laid.
What are the advantages of K-nuffcrete blocks for roof insulation?
This solution has the advantage of quick and easy implementation on site.
With its high thermal inertia, the hemp block prevents overheating of the building in summer and guarantees excellent resistance over time.
Can the blocks be grooved and sheathed inside?
Yes. To make grooves for electricity or other technical networks, it’s recommended to use a grooving machine and a suitable hole saw.
What is the thermal conductivity of a block?
The lambda (= thermal conductivity) of a K-nuffcrete block is 0.071 W/mK.
What is the specific heat of a K-nuffcrete block?
The specific heat of the K-nuffcrete block is 1600 J/KgK.
What is the density of a K-nuffcrete block?
The density (= dry apparent mass density) is 340 kg/m³.
What is the lifespan of a block?
As long as the building exists and the hemp block is protected by a finish (plaster, brick, etc.), it will not degrade and its technical performance will remain intact.
Can K-nuffcrete blocks be left visible?
For situations where thermal and acoustic insulation is required, it’s essential to render the hemp blocks. They are not airtight and it’s the block + rendering system that creates the technical performance. For applications where maximum sound absorption is desired, it’s possible to paint the wall directly using a spray gun or to attach a fixator to the wall.
Can K-nuffcrete blocks be left outside to store them?
K-nuffcrete block pallets can be stored outside for 3 months and stored for 2 years if the pallets are covered and protected from rain.
Why choose K-nuffcrete blocks for your new construction?
K-nuffcrete blocks are suitable for all types of projects. In addition, they guarantee the success of your project and have many advantages such as:
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Thermal and acoustic performance essential to comfort
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Natural regulation of humidity
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Flexible design
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Long-term durability
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Ease of implementation
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A wide choice of finishes: brick, parging, cladding, etc.
What are the fields of application of K-nuffcrete blocks?
K-nuffcrete blocks are particularly suitable for the construction of residential houses, doubling of existing walls on the inside or outside, as well as industrial subdivision and apartments.