Building System

The LISREC building system consists of simply sliding structural elements into place. No adhesives or other bonding materials are needed, which reduces costs and shortens construction time to just days or weeks.

A moderately skilled builder, with the help of family or friends, can assemble the entire system. The system is designed to automatically maintain all planes and angles, ensuring that walls cannot be misaligned or shorter than planned.

The concept is designed so that the basic version is immediately habitable. All surfaces are clean and smooth, allowing any additional design modifications to be postponed based on the builder’s financial possibilities.

Surface structure made of original material

Interior surface finishing can be done using drywall panels, which also eliminate the need for steel profiles. The panels are simply screwed onto the perfectly straight walls and finished with gypsum filler.

Alternatively, classic adhesive with mesh reinforcement can be used, followed by stucco plaster for the final finish. The entire surface is then painted.

All electrical and plumbing installations are integrated during construction—they run through a technical gap and are simply pulled through openings at their final connection points.

Lisrec is not just a building system. It is a lifestyle that enables people to achieve partial food self-sufficiency. It offers the possibility to grow food directly on the façade, recycle bio-waste, produce and utilize accessible clean energy, manage water resources, and use geothermal energy for heating the home…
Finální povrch Otvory Konstrukční rozpěra Obvodová nosná zeď Technická mezera Konstrukční rozpěra Otvory Konstrukční otvory Konstrukční otvory Interiérové povrchy
Výměnný box Upevňovací fasádní prvky Konstrukční rozpěra
Drážka pro čep Stavební modul Horizontální nosná konstrukce Spojovací čep Stavební modul
Box na pěstování Box na substrát Stavební modul

Composition and Properties

Building System

The unique Lisrec building system is made from recycled, health-safe polymer, sand, recycled glass, and other components.

Composition

The material used to manufacture LISREC building and structural elements consists of:

  • 80% sand
  • Crushed recycled glass
  • Recycled and purified polyethylene (PE)
  • Pigment and UV stabilizers

Polyethylene

One of polyethylene’s greatest advantages is its health safety and excellent durability. In everyday life, it is most commonly found in packaging materials or household plastic products. It is used to make shrink films, food packaging, textile fibers, various toys, and plastic bags (microtene).

 

  • Polyethylene is resistant to solvents and most chemicals.
  • When burned, it does not release hazardous substances.

100% Plastic Recycling Efficiency

Standard plastic recycling depends on the purity of the recycled material. If plastic consists of multiple colored components (e.g., prints, colored layers, etc.), it is usually not recycled and ends up in landfills or incinerators. Due to this limitation, typical plastic recycling success rates are only around 30%. However, for our purposes, color combinations are not an issue, allowing us to achieve 100% recycling efficiency.

Fyzikální vlastnosti recyklátu

Property Lisrec Beton C30/37
Density 650 kg/m3 <2300 kg/m3
Compressive Strength 29 MPa 31 MPa
Flexural Strength (Average) 14,6 MPa 3 MPa
Water Absorption 0 % 7 %
Frost Resistance 1 0,8
Water and CHRL Resistance After 50 Cycles 4 g/m2 250 g/m2

Insulation

Traditional building insulation systems are generally soft, making them susceptible to mechanical damage and loss of thermal insulation properties, including reduced resistance to weather conditions.

The LISREC system solves insulation through the technical gap in the construction structure.

Once all planned utility networks (electricity, data, water, sewage, etc.) are installed in the technical gap, this space can be filled with loose thermal insulation depending on the climatic region where the building is located. The gap can be filled with insulation material, sand, or left empty.

This ensures that the insulation layer is 100% protected from environmental influences.

With this simple method, a builder can easily and cost-effectively insulate an entire house using their own resources.

Durability

The Lisrec building material is resistant to acids and other aggressive substances. It is non-absorbent, extremely tough, and fire-resistant. During fire tests at 1200°C (2192°F), it exhibited self-extinguishing properties. Additionally, polyethylene does not release harmful gases when burned.
The combination of polyethylene and sand provides exceptional impact resistance and mechanical strength. It is also highly resistant to moisture and plant growth, allowing vegetation and even food production directly on the façade without damaging the structure.

Lisrec Configuration Tool

A digital configurator will allow builders to design their home in 3D, calculate all technical parameters, and export specifications.
It will provide detailed reports on cable lengths, materials, and costs, ensuring precise project planning. The output can be shared with a certified architect or Lisrec’s partner services.

Catalog

The best architectural designs will be uploaded to a public catalog, allowing users to download them for a symbolic fee.
This will enable talented designers to monetize their work, while offering inspiration and ready-to-use solutions for future homeowners.

The Only One of Its Kind in the World
Everything that can be built in the Lisrec construction kit can be realized in full scale.

Lisrec Construction Kit

All elements are made in a 1:10 scale, with shapes identical to the actual building components. The kit is assembled exactly like real construction, making it a perfect hands-on learning tool.

Who Is the Construction Kit Suitable For?

  • Future DIY builders – Engage the whole family!
    • Test different designs before committing to real construction.
  • Children – Build real miniature houses, not just toys!
    • Develop creativity and problem-solving skills.
    • Encourage hands-on learning for future builders.
  • Architects and designers – More effective than 3D visualization on a computer.
    • Physically present designs to clients.
  • Students – Great as an educational tool.
  • Creative individuals – A playground for innovative designs.
  • Model builders and hobbyists – The perfect platform for realizing their ideas.

The LISREC Project Is a Large Puzzle

The LISREC project is a large puzzle composed of individual building blocks – interconnecting projects and people who collaborate in various forms of engagement. Each building block can be purchased.


Invest



The entire LISREC project is based on four fundamental pillars: CONSTRUCTION – FOOD – ENERGY – WATER
Each pillar is funded through micro-payments, the sale of LISREC building blocks, commercial activities, production, and operation of technologies and services associated with that pillar.

The funds raised are used to finance projects that fit within the LISREC concept.

Anyone can participate based on their capabilities – either through micro-payments starting from $2 or as a PARTNER. By purchasing LISREC building blocks, participants have the opportunity to receive financial rewards based on a Cooperation Agreement from the financial results of the supported LISREC projects​.


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Planting Boxes

Planting boxes are not limited to vegetables; they can also be used to grow herbs and various spices. The advantage is that, if necessary, the entire box can be removed and taken to the kitchen. After use, the box can be reinserted into its original place. This also allows plants to be protected from adverse weather conditions, such as frost, etc.

Façade Greenhouse

The entire construction system is a modular kit that allows for high creativity. Similarly, a small greenhouse can be created on the facade to accelerate seed germination and seedling planting. By utilizing the existing substrate box, combining aluminum tubes and food-grade plastic wrap, everything can be easily implemented at almost no cost, extending the growing season.

Material

The material from which the construction elements are made is resistant to water, acids, and other mechanical influences. It is also resistant to plant growth. All construction elements are manufactured using calibrated molds under high pressure. This ensures maximum accuracy of the entire construction system. This allows for building with millimeter precision while maintaining all right angles and flat surfaces.

Calibrated Dimensional Accuracy

All construction elements are manufactured using calibrated molds under high pressure. This ensures maximum accuracy of the entire construction system. This allows for building with millimeter precision while maintaining all right angles and flat surfaces. Thanks to the unique and simple construction system that automatically ensures precision, even a moderately skilled builder can undertake construction using only the building plan.

Connecting Pin

A connecting pin is mainly used for simple walls and partitions with a thickness of 100 mm. It is also used for fencing. The pin also ties the structure horizontally and vertically between individual layers. This is a very strong connection that can be easily disassembled if needed. Due to the properties of these joints, the structure can be easily dismantled and reused to build a new one with a different shape and layout without losing functional properties.

Horizontal Load-Bearing Structures

Horizontal load-bearing structures for floors and ceilings are made of wooden KVH beams or planks, which are firmly mechanically attached to the load-bearing walls using steel beam brackets. The beam brackets are screwed into the body of the wall and secured from the other side. On the load-bearing wooden structures, a cover made from the same material as the construction system can be simply placed.

Technical Elements

The shape of individual modules prevents splashing water from penetrating the structure and stops heat loss. The construction elements interlock and overlap. This shape allows the entire structure to be easily stacked together. When securing screws are used, they are concealed and protected under the protrusion of the second module.

Groove for Pin Insertion

A groove for pin insertion. Individual modules are interconnected using protrusions that precisely fit into the groove. These connections ensure high joint strength and maximum vertical and horizontal precision. The connection is achieved by simple insertion. The joints are extremely strong, tested in practice for hundreds of years, and can be easily disassembled if needed.

Structural Spacer with Openings

A structural spacer with openings for routing electrical distribution, data cables, water, and waste pipes. The spacer also connects the external and internal shells of perimeter and load-bearing walls. The openings are sized up to 110 mm for routing waste pipes with a standard diameter suited for residential houses and medium-sized operations. In cases of higher loads, the situation can be managed with parallel distributions connected outside the building or by utilizing the technical gap in the vertical direction up to a dimension of 250 mm.

Mounting Facade Elements

Mounting facade elements can be easily removed, and the openings can be sealed with plugs. Everything is designed as a simple, mechanically strong system utilizing grooves and special pins. When planning a vertical garden or other elements on the facade, a special module designed for facade elements must be used during the construction of the building’s outer shell.

Exchangeable Substrate Box

An exchangeable substrate box made of vermicompost for growing ornamental plants and food on the facade. It allows for the cultivation of various vegetables, including potatoes. When harvesting individual foods, the box can be easily replaced with a new one containing fresh seedlings, allowing continuous cultivation without affecting other crops. The boxes are made from the same material as the Lisrec construction system. They are resistant to water, acids, and other mechanical influences.

Interior Surface Treatment

Interior surface treatment can be carried out using drywall boards without the need for steel profiles, which significantly reduces costs and shortens the installation time. The wall surfaces are perfectly even, and it is sufficient to simply screw on the boards and finish with gypsum putty. All fixtures such as sockets and switches are easily embedded into drilled openings, just as with drywall, and connected to already prepared electrical wiring.

Structural Openings

Construction openings allow for separate vertical distribution of electricity and data cables without mutual interference. The cables are also protected. Cable routes in the structure are thus fixed, making it possible to calculate and prepare exact lengths of individual cables. This allows the builder to prepare most of the work themselves, leaving only the connection to be done by a specialist.

Technological Penetrations

For horizontal routing of larger water, waste, and electrical distributions, the spacer has openings with diameters of up to 110 mm. Other technologies can also be routed through these openings. Everything is again filled with loose thermal insulation or another material.

Horizontal Distribution

In cases where horizontal distribution of water, waste, and electrical wiring is required, prepared openings are used, which are then filled with loose thermal insulation or another loose material. They can also remain empty for ventilation purposes.

Structural Spacer

The structural spacer connects external and internal construction elements. It is used for load-bearing and perimeter walls. It has openings for electrical distribution, data cables, water, and waste pipes. The openings filled with loose insulation also prevent thermal bridges between the external and internal wall shells. It is connected to other elements by simple mutual insertion.

Technical Gap

The technical gap between the external and internal shells of the perimeter wall is filled with loose thermal insulation or another loose material according to the climate zone to increase thermal resistance. It can also remain empty for additional use in ventilating the building's structure.

Basic Construction Module

The same modules as those used on other surfaces are used on the external side of the load-bearing perimeter wall. The openings in them can be filled with thermal insulation, thereby increasing the overall thermal resistance of the perimeter wall. If additional elements need to be attached to the building's facade, a special module must be used.

Structural Spacer

A short structural spacer is used for zig-zag vertical interconnection of additional spacers to ensure that individual horizontal layers are firmly connected. This prevents any risk of layers not being securely tied together. It is also used for finishing the height of the wall. It connects the external and internal shells of the building wall.

Water and Waste Distribution

Openings in the structural modules allow for vertical distribution of water and waste even in a simple partition wall with a thickness of 100 mm. The gaps between the distributions and the walls are filled with loose thermal insulation or another material, depending on the climate zone. It is also possible to leave the gaps empty and use them for ventilation.

Final surface

In case it is necessary to create a surface on the wall similar to traditional masonry, the wall is primed, and after drying, construction adhesive with reinforcing fabric is applied. The adhesive that penetrates the fabric is smoothed to an even level. Once the surface hardens, the final stucco plaster and paint can be applied.

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Water management

  • Sources and production of drinking water
  • Water purification
  • Water management
  • Water pumping
  • Water storage
  • Greywater utilization
  • Support and implementation of new technologies

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Food Self-Sufficiency:

  • Growing food on the façade
  • Superfoods: spirulina, chlorella, lentein
  • Vermicomposting
  • Construction and sale of vermireactors
  • Purchase and further utilization of substrate
  • Distribution of substrate – product
  • Compressed bio blocks for cultivation
  • Production and sale of biofertilizers
  • Support and utilization of new food raw materials
  • Development of services in the gastronomy sector
  • Support and implementation of new technologies

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Energy Self-Sufficiency:

  • Heating – water heating
  • Cooling – ventilation
  • Water pumping
  • Storage and utilization of harvested energy
  • Electrical self-sufficiency
  • Alternative energy sources
  • Thermal insulation
  • Support and implementation of new technologies