Why Roof Ventilation is Important


You want a beautiful roof – quality shingles in a color that matches your home, neat detail work, and straight, clean lines. We can do that. But what’s going on underneath your roof is just as important.

The movement and temperature of air under your roof can affect the lifespan of your roof, and can dramatically change your heating and cooling bills. So let’s learn a little bit about what happens in your attic.





Under the decking of your roof is a space of open air or insulation, even if you don’t have a walkable attic.

Because heat rises, this space under the roof can trap hot air rising through your home and create a stuffy, stifling pocket of air. You may have noticed this the last time you went looking in the attic for that old box of baseball cards.




In the summer, trapped hot air can affect the temperature of your entire house, driving up your cooling costs. In the winter, the problems are even worse.

When snow sits on your roof, hot air in the attic can melt that snow, creating water and ice that will threaten the integrity of your roof. When ice dams build up over time, they can damage your shingles and even the roof decking underneath.





The hot air that builds up under your roof is trapped there…unless you let it out. That’s why most codes require some type of roof venting.

There are many types of venting, like box vents and wind vents, but we recommend ridge venting for almost all homes. Ridge vent runs the length of the building’s peak, providing a way for air to escape, while keeping the ridge watertight.

So, with ridge vent installed, hot air can rise out of the top of the attic space.

The second half of the equation is soffit vent.



Soffit is installed under the eaves of roofs, to close in the underside of the overhang. With vents installed in the soffit, hot air can rise out the ridge vent, sucking cool air in through the soffit vent.

A successful ridge/soffit vent setup will create a continual cycle of fresh air under your roof, keeping temperatures down as well as preventing damaging moisture buildup.




Whether you’re installing a new roof or improving your old one, talking to a professional roofer about your ventilation needs is always a good idea. Make sure your roof installer carries high quality venting materials and is prepared to provide excellent ventilation for your roof.

Remember, your roof is about more than what you see on the surface!

To learn more about your home’s ventilation needs, contact Joyland Roofing HERE.