Mold and heat - a way to fight mold?

In Siberia, moldy objects are simply placed in front of the house in winter - in most cases, the mold then dies very quickly of hypothermia. Whether you can kill mold with heat and vice versa, and whether this is practicable, this article reveals.

Necessary living conditions for mold

The mold itself can only thrive under certain conditions:

  • sufficient moisture at the site of infestation (main criterion)
  • certain minimum temperature (different depending on the type of mold)
  • maximum maximum temperature (also different according to mold)
  • Presence of organic material that can serve as a nutrient for the species
  • oxygen
  • Absence of draft, if possible (important: drafts can cause severe damage to mold)

Survival conditions for the mold spores

Spores, the "seeds" of the mold, on the other hand, are much more resistant than the molds themselves. They can withstand relatively long periods of drought, nutrient deficiency, and alkaline or acidic environments, as well as extreme temperatures.

Heat and dryness

In the long term on the mold acting heat also causes the substrate on which the mold is located, dries out. This deprives the mold of another livelihood.

Heat for mold control

Theoretically, one can kill a mold by the action of heat. Most species can hardly stand temperatures above 50° C, even the most resistant species can not survive at temperatures above 70° C.

Mold control with the blowtorch

On small surfaces of a solid, mineral substrate, you can easily kill mold with the blowtorch. The surfaces should be insensitive to heat, and definitely solid and solid. Previously, no other (flammable) home remedies such as alcohol or methylated spirits have been used - here is the absolute risk of fire!


Spores live on

The heating kills the mold, but often not the spores. These remain viable. This is not a problem with small-scale infestation. If larger areas are affected (more than about ½ square meters), a professional renovation of the component must be carried out anyway.

Mold is not just superficial

At the moment when mold has already penetrated below the surface, the killing by heat is often no longer sufficiently effective. Even home remedies do not help here. If more than just the surface is affected, must be professionally rehabilitated.

Surface is too moist

In very humid areas, the heat often can not work properly. In this case, the infested area should first be dried (fan heater) before then again with targeted heat on the mold starts.

After killing the white horse

If you have killed the mold successfully (a period of action of the heat in all places of at least 4 - 5 minutes is necessary) you should carefully wipe the mold with a rag. The cloth must then be disposed of immediately (preferably outside the house).

Tips & Tricks

Always remember to identify and eliminate the cause of the mold. That is fundamentally important!

Video Board: How to Remove Mold Spores from the Air | Distaster Restoration Experts in Denver