Company for professional

Basement renovation

Would you like to have a damp basement renovated? We have been doing professional basement renovations with electrophysical dehumidification, intelligent basement ventilation and heating systems since 2010.

Installation of the Drymat system

Basement renovation from the inside

Although basement rooms usually offer a lot of space, they are often of limited use because they are damp. Unpleasant room climate, musty smells or mold infestation prevent efficient use. This does not have to be! renovates basement rooms at fair prices with electrophysical dehumidification and intelligent heating and ventilation systems.

Since 2010, we have been the exclusive representative in Switzerland of DRYMAT®, a certified system for drying buildings by means of electroosmosis. The installation of the DRYMAT® system requires minimal structural intervention and allows complete drying of the masonry down to the basement floor. The drying process takes between 0.5 and 3 years and can be accelerated with ventilation.

Basement ventilation leads to a noticeable improvement in the indoor climate, which can also have a positive effect on the living spaces above. Intelligent ventilation is cost-effective and also provides an effective Protection from the accumulation of radon in the basement rooms. Upon request, we perform a radon short-term measurement. Contact us without obligation.

A common mistake before or during basement renovation is the use of building dryers: Powerful dehumidifiers should only be used for a short time after water damage, as they damage the building fabric in the long term: They may be able to dry out the walls for a short time, but in the medium term the dry walls draw moisture in, with the mineral salts in the moisture damaging the masonry over time. More on this in the guide «Dehumidify basement»

Our services

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Before/after pictures

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Contact us without obligation

Do you have any further questions or may we prepare an offer for you?

Contact us without obligation. The initial consultation is free of charge. We look forward to your inquiry!

Contact us without obligation. The initial consultation is free of charge. We look forward to your inquiry!

Tobias Bayer
Managing Director

Tobias Bayer profile picture

Questions & Answers

How much does a basement renovation cost?

The costs for an electrophysical basement dehumidification with DRYMAT® amount to approx. CHF 15'000 - 20'000 for a house with a floor space of 60 m². Decisive for the price is our effective expenditure, which can vary considerably in individual cases. We install basement ventilation systems from CHF 2'200. Contact us without obligation for an individual offer.

What are typical consequential damages of damp building fabric?

Damp basements lead primarily to musty smells, unpleasant indoor climate, increased heating costs and mold growth, which endangers the health of people in the building. Over time, stains and spalling can occur on the wall surface, spreading from the bottom to the top, for example. This leads to a gradual reduction in the value of the property.

How reliable are the results of electrophysical drying?

Both the DRYMAT® system and our approach to its application are ÖNORM-certified. When we use the system, we guarantee the results. However, DRYMAT® can only be used as a supplement in the case of pressing moisture sources or cracks and major damage to the building envelope. This is why we start by carefully analyzing the causes of moisture.

Why a basement renovation with

We have been the exclusive provider of electrophysical building drying with DRYMAT® in Switzerland since 2010. DRYMAT® requires only minimal structural intervention and is capable of permanently drying damp masonry down to the cellar floor. Our process is ÖNORM-certified and safe in terms of building physics, ecology and health.

What does basement renovation cost in Switzerland?

For a house with a floor area of 60 m², electrophysical dehumidification costs between CHF 15,000 and 20,000. Demand You without obligation an individual offer.

What are the cost-driving factors?

Cost factors include the length and accessibility of the walls, construction materials, aesthetic requirements, and how long it takes to get there.

What are the annual operating or maintenance costs?

The DRYMAT® system is completely maintenance-free. Annually, electricity costs of approximately CHF 50 are incurred to maintain the electrical potential. These costs are primarily due to the consumption of the DRYMAT® control system.

How many years does DRYMAT® guarantee?

We give a 10-year guarantee on the DRYMAT® system.

Approximately how long does the basement renovation take?

The installation of the DRYMAT® system for electrophysical dehumidification takes about 3 to 5 working days for a house with a floor area of 60 m². It takes 0.5 to 3 years until the basement is dry. This process can be reduced by an intelligent Basement ventilation be accelerated. Installation of basement ventilation takes about one working day.

How is the DRYMAT® system installed?

First, the holes for the electrodes are drilled. Then we mill narrow slots for wiring the electrodes to the DRYMAT® control unit. Third, we install the electrodes and connect them to the control unit. Fourth, we test the system and put it into operation. Then we plaster the slots of the assembly.

How much noise and dirt is generated during assembly?

During the drilling and milling work, it is quite noisy in the rooms concerned. Dust generation, on the other hand, is low, as we use industrial vacuum cleaners and extraction hoods for drilling and milling.

What is the process of installing a basement ventilation?

We install basement ventilation either in basement windows or light wells, or by means of a core drilling through the outer wall. For this purpose, we replace the window panes with boards or acrylic glass and fit the insulated pipe of the fan. Then we place the fan in the pipe and install the internal and external casing. Finally, we connect the device to the power and familiarize you with the maintenance and control.

Why do damp cellars occur?

The most common causes are condensation, rising damp in the wall and faulty installations or damage to the building envelope. If the moisture rises in the capillaries of the wall, the actual problem is not the moisture or the leak in the wall, but certain properties of the building fabric that cause the moisture to be absorbed by the wall. This effect is favored by the negative electrical potential of the wall. More on this in the «Damp walls» guide

How does cellar renovation with electroosmosis work?

The osmotic principle states that moisture can flow within a porous material if an electric field is applied parallel to its surface. The water flows from the positive to the negative pole. As the wall is negatively charged, the water rises upwards in the building fabric. With the ÖNORM-tested DRYMAT® system, we ensure that the wall has a positive electrical potential compared to its surroundings. This means that the water can no longer rise in the wall. The result is effective drying of the masonry.

Why are building dryers counterproductive in basement renovation?

The building fabric absorbs moisture because it has a negative electrical potential in relation to its surroundings. The building dryer initially causes more moisture to evaporate on the inside of the wall, whereby the masonry can become drier in the short term. However, as long as the wall continues to absorb moisture, this is only symptom control. As the drier wall draws in moisture, the salinization of the wall is also accelerated, which leads to damage to the wall surface over time. More on this in the guide «Dehumidify basement»

What are the advantages of electrophysical dehumidification?

Electrophysical wall dehumidification can be realized with minimal structural intervention and dries the building fabric down to the basement floor. Neither complex earthworks nor toxic chemicals are necessary. Electroosmosis is harmless to humans and the environment.

For which moisture problems can DRYMAT® be used?

With the DRYMAT® system, rising damp in the building fabric can be effectively eliminated as long as there is no damage to the building envelope. The DRYMAT® is able to dry out even heavily soaked walls.

Where can DRYMAT® not be used?

DRYMAT® is not suitable for drying buildings after water damage. In case of adjacent water veins or pressing slope water, the DRYMAT® system can only be used as a supplement. Major damage to the building envelope, such as holes or cracks, must be repaired before DRYMAT® can be used. Our building experts investigate the causes of the moisture as well as the condition of the building envelope as standard.

Is DRYMAT® suitable for all building materials?

Yes, DRYMAT® can basically be used for all building materials in which moisture rises. However, the moisture must find a way out. If it encounters an impermeable layer, it can collect there. We carefully check whether the moisture can escape.

Are the results of DRYMAT® guaranteed?

Yes, the functionality and application of the DRYMAT® system are ÖNORM tested. When we use DRYMAT®, we guarantee the results. To be able to guarantee the results, we first carry out a careful analysis of the causes of moisture. This ensures that there are no criteria that would rule out the use of the DRYMAT® system.

R. S. from Montreux says:

«It took a year of patience, but this paid off: about 12 months later, there were massive downpours again, some of them even more intense than before. The house remained completely dry, no more wet floors, no more damp walls!» ➝ other references

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