Mold Basics

Mold Basics

High Humidity And Mold-Part 1

high humidity and moldHigh humidity promotes mold growth and can destroy a home or building just as the results of plumbing leaks or water infiltration from the outside.  Mold spores floating in air can take the humidity from the air and start growing on materials and surfaces, including walls and ceiling.

What is relative humidity?

The relative humidity (RH) plays a big part in promoting or inhibiting

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High Humidity And Mold-Part 2

high humidity and moldHigh humidity can produce tremendous damage in a home or building.  In part 1 of “High Humidity And Mold” we explained the principle of the relative humidity and the relationship between humidity and temperature.  In this segment we describe various situations that could lead to high humidity and mold.  We reiterate that the relative humidity (RH) should be kept below 60% at all times.

With plumbing leak problems, the water damage and mold develop at a particular location – the  sheetrock is progressively saturated with water and mold sets in on the sheetrock, wood studs, and anything in that location.  With high indoor humidity the mold spores settle and grow on all surfaces.  It starts on surfaces with a haze and progressively the surface mold gets worse and permeates the surfaces and materials.

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The Life Cycle Of Mold

LifeCycleOfMoldIllustration showing the life cycle of mold

The life cycle of mold includes four stages.
1)  Spore lands on a moist surface; secreted enzymes dissolve food (dead organic material.)
2)  Spore germinates producing hyphae (a root system) ; enzyme process continues.
3)  Hyphae grows and dig into the surface.
4)  Mold grows and releases spores into the air.

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