Drying out water damage

It is difficult to give exact guidelines for how to approach a water damage situation, as both the nature and extent of water damage varies considerably. However, there are some general points that you should always take into consideration.

It is essential to contain the damage by sealing off the afflicted area as quickly as possible to avoid outside air or other sources adding humidity to the locale. This way you only have to deal with the water that is already in the locale.

It is equally important to remove the moisture as quickly as possible. In most cases it is beneficial to add heat to the room to increase the evaporation. This is especially true if the water damage occurred recently and the water has not had time to penetrate deep into furniture and moveables, or walls, floors and other parts of the building structure.

If the water has had time to penetrate deep into the building structure you need to use a larger dehumidification capacity to get quick results.

Empirical values are essential to ascertain the required dehumidification load. Please read the rules of thumb.

Water damage under floors
In the case of underfloor water damage, it is often necessary to tear up the flooring to replace the wet insulation. This is time consuming work and often it is both very inconvenient and costly as it renders the room virtually useless for as long as the repair work goes on.

In quite a lot of instances, however, a dehumidifier equipped to add heat to the process such as the CDT 30 S and CDT 40 S will spare you the inconvenience of breaking up all the flooring and save a lot of money.

Hot dry air is fed underneath the floor at one end by means of ducts from the dehumidifiers 1 kW heater. To ensure sufficient air supply the length of the ducts should not exceed 5 metres. The hot air continuously feeds through a hole at the other end, evaporating water from the insulation and taking up moisture as it passes under the floor. This allows you to use the room above the afflicted floor while the insulation is being dried out.

The theoretical calculation involved is extremely difficult. We advise you to use empirical values and read the rules of thumb.

You can download the complete Selection Guide for Mobile Dehumidifiers here: Dantherm Selection Guide

Associated products


CDT 30-90

​Dantherm mobile CDT dehumidifiers offer quick and easy control for both damage service more

AD 740

These units are produced to a high class finish and are used in building and water damage… more

AD 20-40

These units are produced to a high class finish and are used in building and water damage… more

AB 200

The AB sound boxes with side channel compressor are ideal for professional insulation drying… more

VP 2-3

The VP 2 and VP 3 sound boxes operate with air-cooled side-channel compressors inside the… more

VP 6

The use of brushless variable turbines reduces the weight of the VP6 units by almost 50%… more

VT 2

The VT 2 water separator is equipped with a high-quality wastewater pump, which is also… more

RB 40-110

The Aerial compressors can be used for transporting air, non-explosive gases and gas-air… more

SD 2

The SD 2 is a sound absorber in a ready-to-connect housing and is used to reduce sound box… more

HF 2

The HEPA filter system inside the ready-to-connect housing is used in connection with a… more

ASE 200-300

The ASE range is clad in a strong and sturdy housing and is ideally suited for drying after… more

More information

Dantherm Group

Water Damage & Restoration more

CDT Selection Guide more


Contact (UK)

Rae Major

Rae Major

Mobile Equipment
Direct: +44 (0)1275 876 851
Mobile: +44 (0)7391 868 832
Contact Rae

Contact (International)

+44 (0)1621 856 611
International Enquiries

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