We all understand the importance of a healthy roof for keeping a home in great condition. But what’s one often overlooked area that plays a huge role in a roof’s performance and efficiency? Ventilation. Here, we’ll go over how to determine whether you need better roof and attic ventilation.
Why is Good Ventilation So Important?
When we refer to roof ventilation, we’re not talking about anything complicated or mysterious. We still mean airflow, or circulation. Roof ventilation requires consistent airflow to function properly. This is typically achieved mechanically, through a power source, or naturally, using the stack effect or the wind effect.
The stack effect occurs when hot air rises and creates pressure in the attic. In order to avoid growing too hot, the hot air, known as exhaust, needs a means for escaping through the roof. Exhaust cannot escape an attic without cool, lower-pressure air entering the attic, air known as intake. Exhaust and intake work together to keep airflow steady and create a well-ventilated attic. If this circulatory system isn’t adequate, your roof could experience a number of problems.
Telltale Signs You Need More Attic Ventilation
Your HVAC system is working overtime.
If your HVAC system is suddenly having to pull double-duty to heat or cool your home, poor ventilation in the attic could be to blame. Exceptionally hot air in the attic can hinder your thermostat’s ability to regulate the temperature in the rest of your home. To find out if poor ventilation might be to blame, place a thermometer in your attic and monitor the temperature.
Mold is forming in the attic.
Ventilation doesn’t just control temperature, it also helps control moisture. If you notice mold forming on the ceiling joints, rafters and beams of your attic, you’re probably in need of a ventilation overhaul. You’ll likely need to hire a professional to remove the mold before tackling the ventilation issue. Since inhaling mold spores can be dangerous, we don’t recommend undertaking the task yourself.
You’re noticing rust.
Rust is another major indictor of moisture issues in the attic. Are you noticing those telltale brown stains on your roof’s metal components? You’ll need to hire a roofer to determine whether poor ventilation could be to blame (it probably is!).