ISOTEX Building Blocks FAQ

The house is made of ISOTEX blocks and moisture does not accumulate.

The blocks are laid dry and the inside is flooded with concrete. The concrete and reinforcement binds the whole structure together, closing the immediate cavities between inside and outside. Once the wall is wrapped, any air between the joints of the blocks and at the edges of the blocks between the wood chips is additionally insulated. In simple terms, the process is similar to that used with stone wool. As long as we do not insulate it, the wind blows through it and it does not fully perform its function. By insulating the smallest gaps, the air in the stone wool keeps the building warm.

Yes, you can.

Yes, you can. No seasonality.

In this case, we suggest waiting for spring. When an ISOTEX house is built, all the interior work is carried out first, so that the moisture from the construction can escape through the walls in the meantime.

For example, imagine a wall that is constructed of gas silicate, with a concrete lintel and silicate or clay bricks underneath. These are three different materials that absorb and release moisture differently, making the wall more likely to crack. With ISOTEX, the same material – fibrolite – is used throughout the wall, and the structure is “bonded” by reinforced concrete.

If the concentration of water molecules is too high indoors and there is no air circulation, the molecules will simply penetrate the building walls. The colder areas, such as wall corners, openings and poorly insulated lintels, are the most susceptible to dampness. If the building structure is not designed to transfer water vapour to the outside, or if other efforts are not made to reduce excess moisture, mould develops in the wettest areas.

The inner and outer walls of the ISOTEX blocks are interconnected by warm wood chip joints, through which the excess moisture in the building escapes. Water vapour is pushed outdoors by the air pressure generated inside the building. The drier (more rarefied) air outside “absorbs” the water molecules.

Six rows of blocks (1.5 m) are dry-laid and then poured with concrete.

The wind insulation is attached (“stapled”) to the wall and the wooden dowels are screwed in place, then the desired facade finish is installed. Nails and screws can be hammered and screwed into the ISOTEX façade. No additional insulation is required.

A house built with ISOTEX blocks without plastering can last as long as you need it to.

It’s no secret that building a house requires a lot of money and you always want to save as much as possible. Since you are building a house for the well-being of your family, you should not save money on a basic building structure that you will not be able to replace later. We would rather advise you to try to save on interior fittings, furniture and household appliances. Usually, about half of the money spent on building a house is spent on these things, but after a few years you have to repaint the walls and replace the furniture. To have a quality and cost-effective home, spare no expense on the foundations, walls, roof, windows, patio doors and garage doors.