4 Reasons Bad Ventilation Causes Roof Rot

Mar 23, 2022Education, Planning

Improper roof ventilation can be devastating…

1. Shortened Roof Life

  • It can lead to uneven temperatures throughout your home and even mess with your HVAC system causing it to work harder to keep the internal temperature of your home consistent which costs you more money in the long run.
  • Excess moisture and heat can cause your roof decking to decay, shortening the life of your roof.
  • Water is one of the biggest hazards to your home, even if the water is in small amounts.
  • The differences between outside temperatures and your attic can lead to condensation on the areas of the roof that are exposed. As condensation builds up, the wood gradually rots away. This is why you need proper ventilation.

2. Mold & Mildew

In addition to causing your roof to decay prematurely, condensation can also encourage the growth of mold and mildew which can be toxic.

As it spreads, mold and mildew can cause the air quality of your home to deteriorate, which causes health problems.

Mold and mildew can damage items you have stored in your attic, some of which may be irreplaceable.

If the fungus enters the living area of your home, it can also damage your furnishings.

3. Ice Dams

If your roof is not ventilated properly, heat can escape from the roof, causing snow and ice to melt and travel to the edge of your roof, where it can freeze again.

Over time, this can lead to significant ice build-up known as ice dams which allow water to back up under shingles as well as decking.

The excess water causes damage to shingles and underlayment. If the ice dams remain for a significant period, there could be damage to your insulation, paint, and other items.

4. Pest Invasions

If poor ventilation leads to roof decay, pest invasions are possible.

Rot can cause small gaps or holes that will allow destructive pests including squirrels, mice, raccoons & birds to get inside your home.

These animals can quickly reproduce, making the problem much worse in a short amount of time.

To sum it all up, it’s essential to make sure your roof system is properly ventilated. If you need help or would like to set up a free estimate, contact us below!