Attic ventilation is a key element of a good roofing design. If properly done, it can help prevent various roofing problems.
How Does Attic Ventilation Work?
Warm and humid air naturally rises and collects at the highest indoor space of the structure – the attic. Without ventilation, heat and humidity can cause damage to the roof’s framing and insulation. There are two types of attic ventilation systems:
- Passive ventilation: A passive attic ventilation system uses the natural rising movement of warm air to create airflow. When heat and humidity is released at exhaust vents located at the highest point of the roof, it creates negative pressure in the attic that pulls fresh air through matching intake vents at the roof’s lowest point, usually at the soffits. In addition to standard ridge vents, other forms of passive ventilation include turbine vents and louvered vents.
- Active ventilation: Active or powered ventilation systems use exhaust fans to force air out of the attic. They can be installed to supplement a passive attic ventilation system. Roof exhaust fans can either be powered by electricity or by built-in solar panels.
The Benefits of Proper Attic Ventilation
In addition to helping prevent the problems described above, proper ventilation in the attic offers the following benefits:
- Longer service life: Trapped heat and moisture in the attic can cause wooden components in the roofing structure to rot and warp. Condensation can also cause damage to most types of attic insulation. With proper ventilation, your roof would not be as exposed to such risks and have a longer lifespan.
- Improved energy efficiency: Trapped heat in the attic can radiate back into your indoor living spaces during the summer season and raise your energy consumption – a problem you won’t have with proper attic ventilation.
- Improved indoor comfort: If you have a finished attic, proper ventilation can make the room a much more comfortable place to stay in.
Krech Exteriors is the leading provider of roofing installation services in Minneapolis and the surrounding communities. Give us a call at (651) 688-6368. You can also fill out our contact form to schedule an appointment.
