Sample Class

Preventing Mold

Mold has always been a focus of green building because indoor air quality – and ultimately the building itself – can be compromised by mold. However, even beyond the indoor air quality issue, mold can negatively impact a great many people, as the liability for mold damage can touch the contractor, the subcontractor, and – yes -- even the lumber dealer. Watch this presentation to learn more about mold and how to prevent it.

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Sample questions from the Quiz on Mold are below

For full study guide on Mold, Click here to download

For full quiz on Mold, Click here to download

1) There is heightened awareness of mold these days because…
A. There is more mold in the world now than there was in 1970.
B. Mold has mutated over time and is now more aggressive and poisonous.
C. Buildings are tighter now and they don’t naturally dry out the way they used to.
D. Wet wood is more common now.

Correct answer: C

Commentary: With modern building science, we’ve tightened up our houses and reduced sources of natural ventilation—which means that we don’t allow air to whistle through our walls and dry them out. As a result, we can get potential moisture buildup in walls and when the relative humidity is high, mold can grow.

2) What two things does mold need to grow, in addition to oxygen?

A. Sunlight and moisture
B. Dry weather and wood
C. A food source and moisture
D. Soil and certain plants

Correct answer: C

Commentary: Food for mold can be found in the form of paper-faced gypsum drywall, wood products, and even some carpet. Basically, mold eats the sugar and starch from the cellulose.