Preventing Mold Growth With Insulation

While insulation is typically insulation contractor with keeping a building warm and energy efficient, it also prevents moisture problems and mold. Proper insulation, combined with proper maintenance and ventilation, can prevent the development of mold and mildew in buildings. Mold and mildew spores can irritate respiratory systems and cause other health issues for building occupants, especially those with weakened immune systems.

Mold needs three things to thrive: a food source (any biodegradable material), humidity and a temperature higher than 40 degrees Fahrenheit. While many insulation materials can be susceptible to mold, some are more resistant than others. Fiberglass insulation, for example, is made of small shards of glass that form pockets to trap air and restrict the transfer of heat. This type of insulation is naturally mold resistant because the sharp edges of the glass puncture mold spores. However, fiberglass is often “faced” with paper products that can be a food source for mold. In addition, it may be a problem to install fiberglass insulation directly against wet areas like basement or crawl space walls.

How Proper Insulation Helps Prevent Mold Growth in Your Home

Other mechanical insulation types such as cellulose, phenolic and polyiso are generally less susceptible to mold than fiberglass. These insulation types are often recommended for cool environments such as crawl spaces and basements, as well as rim joists. When used in conjunction with a vapor barrier and good air sealing, these insulation options can help control humidity and mold growth in these damp environments.

Strategic Spray Foam Insulation, LLC
813 W King St, Boone, NC 28607
(919) 842-5925