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Building drying equipment

Devices for drying buildings

The drying process and the achievement of equilibrium moisture can be accelerated enormously with the help of building dryers, dehumidifiers, Infrared heat panel and Ventilators. There are various methods by which construction drying devices work:

  • Adsorption
  • Condensation
  • Insulation drying

HEYLO offers powerful building dryers in all variants as well as Ventilators and moisture measuring technology. The BT series building dryers, for example, set standards in new building drying. Efficient refrigeration systems ensure superior drying performance in a compact design.

The KT 20 construction dryer has a built-in condensate feed pump for unattended operation. The compact LGR 6000 COM building dryer, in turn, is equipped with special LGR technology and is therefore particularly suitable for fire and water damage restoration as well as for industrial applications. Small units such as the KT 20 construction dryer are characterised by low electricity costs.

The DT series of our construction drying units is particularly suitable for craftsmen and tradesmen. Whether painter, tiler or renovation company, dehumidifiers belong in the equipment park of the professional. The compact devices are easy to operate and dry smaller rooms such as bathrooms. Our dryers are also equipped with calibrated MID meters.

Technical drying by means of a building dryer is efficient because...

  • the construction time for new buildings or renovations is shortened and completion deadlines can be better met.
  • you save on heating costs - without technical drying, additional costs of up to 200 % can arise in the first three years.
  • the building can be used again more quickly after water damage. Long-term damage to buildings can be prevented by Heylo building drying equipment.

Professional building drying and water damage restoration

A lot of moisture is generated during the construction phase, so that a living area of 120 m² can have up to 1,500 liters of excess water at the end of the construction period. Large amounts of water are used when laying the floor covering or plastering bound in building materials such as concrete, plaster or screed.

Building dryer

In addition, houses and flats today have to be completed in ever shorter construction times. Due to the increased time pressure, craftsmen are pushed to start work early in order to guarantee timely completion. Painters, drywallers and carpenters as well as tile and floor layers are thus often faced with serious moisture and, above all, deadline problems. Drying plaster and screed can take weeks in many cases.

When subsequent trades then begin their work and install the roof, windows or thermal insulation, the water hardly reaches the outside. If the floor and walls do not dry out properly, however, expensive consequential damage can occur later, such as mold growth, parquet deformation or blistering under PVC coverings. The high follow-up costs are one thing - but the health damage that mold can cause to the residents is also serious.

Another important argument for the use of technical drying by means of construction drying equipment is the potential savings in heating costs later.


The possibilities of building drying in new construction

  1. Ventilation
    Ventilation is only possible over a very long period of time and is not recommended in practice, as the drying speed depends strongly on the ambient air humidity and temperature.
  2. Heating and ventilation
    Heated air can absorb more moisture, but the absorbed moisture also increases the room humidity. This slows down the drying process, resulting in high energy costs.
  3. Technical drying
    Drying via a building dryer or dehumidifier is the most efficient method of drying a new building sufficiently and quickly. The energy costs remain manageable and the drying times are shortened considerably. 200 to 300 % in heating costs can be saved in the first five years after construction completion by using condensation dryers.
    Tip: And in combination with ventilators, technical drying using construction dryers is even more effective.

Water damage restoration

About 3,000 cases of water damage occur in Germany every day. Houses or buildings, cellars or walls must be drained. First, an expert must analyse the damage and locate the leak to determine the cause of the water damage. After the leak has then been closed, the experts pump out the water with appropriate equipment and mop up the rest.

Now professional dryers such as our construction dryers come into play. Depending on the size of the room and the damage, the tradesman selects the appropriate dehumidifier. Here HEYLO is your expert for drying technology, whether it is for repairing water damage or drying a new building. If the insulation layer under the screed is also damp, devices for special insulation layer drying are used.

With our construction dryers, rooms and walls are dry again in no time!

Reasons for water damage during the construction phase:Bautrocknung

  • Pipe bursts during the construction phase
  • Installation faults in the pipe network, non-welded pipes
  • Backwater of sewage because construction debris clogs the drainage pipes
  • Constantly dripping taps or building supply hoses
  • Weather-related water ingress into the basements due to unplanned terrain
  • Groundwater penetrating poorly constructed waterproof concrete
  • Unsealed boreholes for supply lines (telephone, gas, water)
  • Rainwater enters before the roof is finished or through open windows
  • Capillary water due to rising damp from faulty seals

Reasons for water damage in existing buildings:

  • Defective washing machines, or breakage of the washing machine hose
  • Manufacturing and material defects on fittings and screw connections
  • Defects in soldered, glued, pressed and crimped joints
  • Hairline cracks in cold, hot water and heating pipes
  • Installation faults in the piping network of the house
  • Construction defects (consequential damage)
  • Failure of the lifting unit for waste water
  • Rusted through heating pipes
  • Offered underfloor heating
  • Backwater flap defective and open
  • Frost damage to the pipe system
  • Dishwasher spill
  • Water pipe breakage

Use of Ventilators and construction heaters


Together with HEYLO Ventilators, the drying process with dehumidifiers is shortened by up to 50 %. Temperature, humidity and air flow have an important influence on the success of a dehumidification performance. Moisture is created on the surface of a material during the drying process. Ventilators move the air, allowing this moisture to evaporate more quickly. The transfer of water vapor from the material to the room air is significantly improved by air flow. Operating drying equipment and dehumidifiers without the support of Ventilators is inefficient. The HEYLO industrial Ventilators are suitable for continuous operation and have been developed for the high load on construction sites and in the industrial sector by means of robust as well as protected housings.

Warm material naturally has a higher evaporation rate than cold material. In addition, warm air can absorb considerably more water vapor and lead it to the dehumidifier than cold air. Therefore, switch on the central heating or underfloor heating during the drying process. If there is no heating available, mobile heating devices such as HEYLO electric heaters are a good choice. These can be used quickly, precisely and reliably. Only a power connection is necessary. The room air should have a temperature of 20 to 22 degrees Celsius.

How long do drying units have to run and what are the costs?

The dehumidification requirement is calculated from the air volume of the room and the difference between the existing and the desired absolute humidity. The dehumidifier draws the air through two heat exchangers and removes the moisture by condensation. The manufacturers' capacity diagrams provide information on the performance of the unit. A simplified example will be used below to illustrate how little technical and energetic effort is required for air conditioning:

We have a basement with a floor area of 100 mH and a volume of 250 mH. With cold surfaces in the room, the relative humidity in the centre of the room should not exceed 40 % if possible.

The incoming outdoor air contains 10.40 g/mL water vapour (20)C/60% RH). If this warm air reaches the cold walls, it will cool down to 10 degrees Celsius there. The cooling causes the relative humidity in front of the wall surface to increase significantly, but it should not exceed 75 % r.h. This is the only way to achieve capillary condensation. This is the only way to avoid capillary condensation. If the absolute humidity in the room remains below 7 g/mL (20)C/40% r. h. ~ 10)C/75% r. h.), no condensation will occur.

Water vapour must therefore be removed from each cubic metre of air in the room as follows:

10.4 g/mL – 7.0 g/mL = 3.4 g/mL

A total of 250 mC x 3.4 g/mC = 850 g of water must be dehumidified.

In a cellar of 100 m², not even one liter of water decides whether the humidity is optimal or too high. A compact dehumidifier such as the DT 650 from HEYLO with an air circulation of 300 mC/hour removes about 300 g/hour from the air at 20) C/60 % r. h.. The desired value is reached after just under three hours of operation. The power consumption for such a drying process is 0.33 kW x 2.83 h = 0.94 kWh.

By way of comparison, a tumble dryer consumes an average of 3 kWh when drying 6 kg of laundry and is nevertheless standard equipment in many households.

In continuous operation, a dehumidifier will run more frequently in summer and much less frequently in winter. In the above example, with a 0.1-fold air change in summer, a daily operating time of about 6 hours can be expected. In practice, there may be deviations upwards or downwards. A multitude of factors play a role that make a detailed calculation very extensive. Increased building moisture or air humidity from use extend the running times.

In flats, the occupants already contribute approx. 1.0 to 1.5 liters per person per day to the air humidity through perspiration, cooking and showering as well as hanging up wet laundry. The higher the humidity in the room can be, the less often the hygrostat will switch on the building dryer. If thermal insulation or moisture-regulating materials are installed, even shorter running times can be assumed. Practical experience shows time and again that the energy demand for air conditioning is usually completely overestimated, especially in comparison to the energy consumption of heating and air conditioning units.

HEYLO drying equipment ensures fast drying in all areas of application. Quickly and easily find the right construction drying device to buy.

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