Roofing Myths: More Insulation Is Better

Roofing Myths: More Insulation Is Better


This month’s myth deals with too much of a good thing: attic insulation. Surely if a little insulation is good thing, even more would make it even better. In reality, equipping your Orlando area home with the right amount of insulation is more important than you might realize.

Using too much insulation in your home’s roof can have several negative effects:

Moisture Buildup

Excessive insulation can trap moisture within the roof structure. When moisture accumulates, it can lead to mold, mildew, and rot, which can compromise the structural integrity of the roof and reduce its lifespan.

Ice Dams

This concern isn’t likely to affect Orlando area homes, but in cold climates, excessive insulation can contribute to the formation of ice dams. Ice dams occur when snow on the roof melts due to heat escaping from the interior of the house, then refreezes at the eaves. This can lead to water backup under the shingles, causing leaks and damage to the roof.

Ventilation Issues

Proper ventilation in the attic is essential for maintaining a healthy roof system. Excessive insulation can impede airflow, preventing proper ventilation and causing heat to become trapped in the attic. This trapped heat can lead to premature aging of the roofing materials and increase energy costs. Unlike ice dams, heat build-up is definitely an Orlando concern.

Weight Load

While insulation is not typically heavy, if you add too much of it, especially in combination with other items stored in the attic, it can put unnecessary stress on the roof structure. This can potentially lead to sagging or even structural failure over time.

Fire Hazard

Certain types of insulation materials can pose a fire hazard if they come into contact with hot surfaces or electrical wiring. Excessive insulation increases the amount of flammable material in the attic, potentially increasing the risk of fire.

It’s important to strike a balance when insulating your home’s roof. Consult with a professional to determine the appropriate amount of insulation for your climate and the specific characteristics of your home to ensure optimal performance and longevity of your roof.

For more information about healthy, functional roofs, contact us at JA Edwards of America.