Attic ventilation ranks way down on the list of trendy and exciting home improvement upgrades. However, although most people do not spend a considerable amount of time in their attic, the importance of proper ventilation cannot be overstated. Proper ventilation and air sealing should ideally keep attics cold in the winter by preventing heat from below from entering the area. In the warmer summer months, a properly ventilated attic will move the hot air out of the attic, remove harmful moisture, and protect the roof and other structural elements surrounding and supporting the attic. Proper air circulation is critical for the following three key reasons:

 

MOLD AND MILDEW PREVENTION: Because of its location and lack of air circulation relative to the rest of the house, the attic is especially susceptible to the growth of mold and mildew. Since most attics are not generally used as liveable areas in a house, homeowners can go a long time before they notice any mold or mildew issues. By the time the problem is detected, the infestation might be more challenging to get under control because the mold and mildew have had the time to grow and cause damage to the attic and surrounding insulation. Proper attic ventilation can help to negate the riks of a mold and mildew infestation.

 

HEAT AND MOISTURE ISSUES: Even though most attics are engineered to withstand a certain amount of heat and moisture elements, there are specific attic structural components that may not hold up as well to the effects of warmer temperatures. Components such as rafters, shingles, and trusses are at risk of becoming damaged when the heat becomes too much. Proper air circulation throughout the entirety of the attic is necessary to prevent warping and weakening in the structure. Excessive heat and moisture exposure can also exacerbate the problem of mold and mildew if not addressed properly.

 

INSULATION DAMAGE: Although the issue of heat and moisture is a problem by itself, the issue of too much heat and moisture can also lead to significant damage to the insulation. A decrease in insulation effectiveness can negatively affect the home’s energy efficiency. This can lead to increases in utility bills as well as a variety of additional problems caused by improper insulation.