Build House Without Nails or Screws Thanks to Brikawood Interlocking Wooden Bricks

In modern times, most people are fascinated with 3D printed houses. But if you have a fondness for wooden homes, then French startup Catharhome has something interesting for you.

The company has come up with the idea of Brikawood – Lego-inspired wooden bricks that interlock over each other with spacers, and require no nails or glue while building a house or structure.

This innovative idea is the brainchild of engineer Alain Romero who researched for three years to develop it with the help of Patricia Dutreux. Made of sustainably-sourced Douglas fir, it works similar to traditional toy Lincoln logs consisting of miniature logs used by children to make tiny forts.

This Lego-inspired wooden brick comprises four wooden elements – two lateral flanges and two transversal spacers with dovetail joints, assembled by interlocking over each other, thus giving a mechanical rigidity to the structure.

A rubber hammer is used to mount bricks in dedicated slots and a drill is used to secure the sill plate on the slab. You’ll also need a wall cap to close the walls after complete insulation.

The Brikawood bricks are designed to be used alone, without any cladding and membranes. They just need to be equipped with an anti-return valve specific to Brikawood to ensure the tightness of the construction that helps minimize heat loss for the same level of comfort in summers and winters.

The hollow parts between wooden bricks are filled with wood shavings or cellulose wadding (paper recycling) for thermal insulation.

Also Read: 40+ Most Popular Tiny Houses on Wheels of All Time 

Brikawood can withstand earthquakes measuring 8.5 on the Richter scale. Even if you are completely new to the building industry, this innovative Lego-like material eases the task of building your own house. With its help, you can build a modular, energy-efficient house easily.

Brikawood passive house

Brikawood passive houses are a mixture of reinforced insulation, glazed windows, heat recovery ventilation system, air-tightness, solar system, and low energy appliances.

They consume 90% less energy than most existing buildings, and 50% less than new homes according to the most current thermal regulation standards.

It also employs a double-flow controlled mechanical ventilation (CMV) system to minimize heat losses due to ventilation.

Meaning, it helps minimize energy bills by maintaining pleasant temperature without conventional heating in winters and air conditioning in summers.

The roof of Brikawood passive house is also made in wood using an innovative system of small traditional latches, on which a tile cover or an insulated steel casing can be layered for better performance.

The ceiling also uses wood paneling fastened under the latches, with a 30 to 40 cm thick layer of the wood fiber. These wooden bricks maintain a constant temperature between 19 to 21-degree.

The bioclimatic design creates an effective envelope in summer as in winter, excellent airtightness with a target value lesser to n50 and equal to 0.6 h, the standards required for a passive house certification.

While building a house with these interlocking bricks, you need to construct on stilts so as to eliminate the risk of moisture from the ground as hollow spaces between bricks are filled with filtered wood chips, blown wool or cellulose wool for better insulation.

For the base, you can choose between Techno Pieux and concrete foundations.

Brikawood is available in two types – Brick 250 (thickness of 250 mm) and Brick 160 (thickness of 160 mm), which can be used to construct different types of houses.

Simple and faster construction along with additional benefits of tightness and high thermal performance are highlighting features of a house made from Brikawood.

Brikawood cost

The price for the Brikawood is €1,100 (~ $1,190) per square meter. The price range of the Brickawood house lies between $74,600 to $149,900, depending on the model you choose.

Sr. No. Model Name Size Price
1 Model Jill 1,291 sq. ft. Approx. $ 149,900
2 Model Jade 1,076 sq. ft. Approx. $116,200
3 Model Jude 915 sq. ft. Approx. $100,500
4 Model Josy 646 sq. ft. Approx. $74,600


For customers inquiring from outside France, the Brikawood team says:

At the moment we supply our kit houses abroad only if the person is able to build it himself. We want to implement in the form of a marketing and manufacturing license, the distribution of our KIT MAISON system, in every country including yours. Make our homes more accessible to larger numbers. With teams of setters, shipping a kit means that the person is able to mount (a professional).

To sell our kits, we need complete training in France within our company, this training is free, only the fee accommodation are your responsibility. Our houses are made with wooden bricks with a thickness of 250 mm price is €950 ($1005.03), without transport and without assembly.

Complete supplies of materials. (walls roofing windows door, electricity, plumbing, parquet) The technical ducts (electrical and plumbing are passed inside our bricks) The studio kits are made with the 160 series a powerful wooden brick, but less wide at a price of €750  per m2 ($799.89) all supplies included (walls roof windows door, electricity, plumbing, parquet).

Our constructive principle meets all the standards in force, RT 2012 and 2020. Feasibility tests were carried out, earthquake resistant, anticyclonic. Recognized house passive (constant temperature between 19 and 21 ° the winter) the summer temperature does not exceed the 24 ° even if outside the temperature approaches the 40 °.

The wood used is a Class 3 (Douglas fir) not need treatment only in some countries or a fungicide will have to be applied. Only a hard linseed oil will be applied (30 years warranty without further application). (source)

Passive house made of interlocking wooden bricks/Image: Brikawood

House sits over mini stilts/Image: Brikawood

Grooves for stacking with each other/Image: Brikawood

Easy to use wooden bricks/Image: Brikawood

Bricks are put in the slots with rubber hammer/Image: Brikawood

Hollow space between bricks is filled with wood chips/Image: Brikawood

Nice building solution for wooden architecture admirers/Image: Brikawood

Roof design with prefab panels/Image: Brikawood

Clean design looks like real bricks/Image: Brikawood

Wooden house made without any nails or screws/Image: Brikawood

Brikawood is available in two sizes/Image: Brikawood

Energy-efficient wooden house design/Image: Brikawood

Happy Jasta: A noob blogger, with passion for web research, content, and digital marketing. He finds it interesting to read latest social-marketing and technology trends. Other than that he likes travelling and making new friends.

View Comments (3)

  • i am very interested in building these kits. if you could please send me any information on your products that would be great. thank you

  • I already subscribed - I saw on LinkedIn a garage being from leggo like wood bricks. I am interested in acquiring
    in a kit to build a garage. Can you please send me the price for such a kit? I also would like to know if I need to get a permit from my city and county of Novato.

    Thank you,

    Armen Balmanoukian

  • $1,190 usd per square meter? is huge expensive !! it should be UNDER $125 usd per square meter to be competitive against real sustentable way of building.