Roof ventilation isn’t on many homeowners’ radars because issues with it often don’t lead to immediate, quick, and visible damage in the same way that a leak might. Still, it is something that is an important consideration for every homeowner. Here are a few reasons why proper roof ventilation is important:
1. Reduce Condensation and Moisture Buildup
A well-vented roof allows for better airflow. An increase in attic air flow has several benefits, but one of the most obvious is that areas with better air circulation stay dryer than those without it.
Without a properly insulated and vented roof, condensation buildup can become severe and can cause damage to the structural integrity of the roof by causing rot over time. When the volume of condensation is great enough, water drips and droplets can eventually cause damage resembling that stemming from roof leaks. Additionally, improperly sealed roof vents are one of the common causes of roof leaks.
The drying effects of proper ventilation not only drastically reduces the propensity for rot to occur, but also diminishes the chance of mildew and mold to form on sub-roof decking or on the trussing in attic spaces. Dark areas of excess moisture are perfect places for mold to grow and spread and this reality makes proper roof ventilation even more important. Mold and mildew can create significant damage to a home which can often result in expensive remediation costs. Likewise, the known presence of mold in a home can make the dwelling much more difficult to sell in the future.
2. Protect and Extend Lifespan of Roof and Roof Shingles
Proper roof ventilation actually has the ability to expand the life of your roof and shingles. Over time, excess moisture can cause the roofing components to warp, bow, and rot. Not only does this undermine the structural integrity of the roof, but it also affects the performance of the roof’s shingles. Proper roof ventilation helps to prevent and reduce these issues, which, in turn, helps to protect your roof and shingles and keep them performing their best for a longer time.
3. Better Energy Efficiency
Your home’s natural air convection is enhanced by a properly ventilated roof. In this way, well-ventilated roofs offer homeowners a more energy efficient home and can actually save a homeowner money on their energy bills in the long term. Well-vented roofs coupled with adequately insulated attic spaces allow hot air to escape the home in the summer and keep cool air from sinking into the home in the winter.
Because a well-ventilated roof helps the air flow in the house move more naturally, it helps to maintain more stable and consistent temperatures throughout the home. When temperatures are more stable and consistent, less electronic appliances and air conditioning are needed to maintain a comfortable household temperature, which helps to reduce overall energy usage and increase efficiency within the home.