Insulation layer drying

Insulation layer drying: Which methods
are available and which one is the right one?

Wet screed does not necessarily have to be torn out. With the right methods, the insulation layer can be dried gently, quickly, and reliably.

0800 50559 00 -- call for freeView drying systems

Historical background: The positive pressure method was developed by Alfred Dörle, the founder of DÖLCO, in the 1970s -- a milestone in professional water damage restoration.

Method comparison

3 drying methods
in direct comparison

Depending on the property, floor condition, and extent of damage, the optimal method is used -- we provide expert advice.

01
Standard

Suction method

Negative pressure method

Functional principle

Air is extracted from the insulation layer, room air flows in through expansion joints.

✓ Advantages
  • ✓Simple setup
  • ✓Exhaust air can be filtered
  • ✓Proven standard method
✗ Disadvantages
  • ✗Almost always destructive (drill holes every 5 m²)
  • ✗Limited air circulation
  • ✗Longer drying time
02
DÖLCO development

Positive pressure method

DÖLCO in-house development since the 1970s

Functional principle

Warm air (55-60°C) is introduced into the insulation layer and transports moisture out.

✓ Advantages
  • ✓Very efficient
  • ✓Only 1 drill hole per 25 m²
  • ✓Compatible with DÖLCO VMD unit
  • ✓Faster drying
✗ Disadvantages
  • ✗Uncontrolled air leakage possible
  • ✗Unfiltered exhaust air
RECOMMENDED
03
DÖLCO recommendation

Hermetic push-pull method

Combination of positive pressure + controlled suction

Functional principle

Controlled combination of positive pressure introduction and filtered suction -- for maximum efficiency with minimal intervention.

✓ Advantages
  • ✓Non-destructive drying via edge joint nozzles
  • ✓30% faster -- 2-3 weeks instead of 3-4 weeks
  • ✓Filtered, clean exhaust air (HEPA)
  • ✓Same efficiency as positive pressure method
  • ✓Mold prevention through germ reduction
Particularly suitable for:
High-quality floorsOccupied propertiesMold prevention

Push-pull method

30% faster than standard

The DÖLCO hermetic push-pull method dries in 2-3 weeks, where classic methods require 3-4 weeks. Back to normal faster.

Standard
3-4 weeks
Push-pull
2-3 weeks

Hygiene & health protection

Germ reduction methods
for the insulation layer

With water damage, there is always a risk of microbial contamination. DÖLCO offers patented methods for effective germ reduction in the insulation layer.

⚡
DÖLCO impulse method
Patented method for highly efficient germ reduction in the insulation layer.
🌊
Insulation layer flushing
Systematic flushing of the insulation layer with conditioned air.
🌀
Ozonization
Targeted ozone treatment to kill mold and bacteria.
🌫️
Nebulization
Introduction of disinfectants into the insulation layer via nebulization.

Note: The DÖLCO impulse method for germ reduction is patented and available exclusively within the DÖLCO system partner network.

Professional advice

Your screed does not have to be removed

Let us check if your floor can be dried gently. In most cases, a screed replacement is not necessary at all -- give us a call.

0800 50559 00 -- free of chargeschaden@doelco.de