Closeup of a roof vent on a house.

As a responsible homeowner, you know the importance of keeping your roof and attic well-insulated. Insulation is, after all, your primary line of defense against thermal transfer from the outside, preventing heat loss in the winter and heat gain in the summer, right? This is true to some extent, but even the best insulation won’t work as effectively as it should without proper roof venting.

While most homeowners know about the benefits of good insulation, the role that roof venting plays in keeping your roofing system in optimal condition is less understood. This means DIYers often make the mistake of covering over the vents under the eaves when they’re installing insulation. It might seem logical that if you’re going to spend time and expense to keep heat in, you don’t want cold air blowing into your attic through these vents, but believe me when I say that this is a mistake.

Proper roof venting helps protect your roof and home in two key ways;

  • It brings fresh, cool air into the attic through the intake vents located under the eaves
  • It releases hot, moisture-filled air from the exhaust vents at the ridge of the roof.

This keeps the attic air circulating and prevents the build-up of too much heat, even in summer, benefitting you in a number of ways.

  • Keep Your Utility Bills Down.

In the summer, if there’s no air circulation, hot, stagnant air will build up under the roof, heating up your ceilings and seeping into your living space, making the air-conditioning work harder and consume more energy.

If your attic gets overheated, your roof will be heated on its interior surface, in addition to the exterior one. This will cause the underlayment and then the shingles of your roof to dry out and crack much quicker than you’d expect, leading to expensive repair work.

In the winter especially, condensation can be a problem when warm air rises from the interior of your home and hits cold surfaces. If your attic isn’t properly ventilated this moisture will build-up, leading to mold, moisture stained ceilings and even structural damage to the rafters, and trusses of the roof itself. If this problem isn’t spotted in time, it could necessitate a complete roof replacement.

While they might look very picturesque, icicles hanging along the edges of the roof are not something a homeowner wants to see. They are a sign of Ice Damming, a problem commonly associated with a badly-ventilated attic. If your attic retains hot air rising up from below and becomes too warm during winter, your roof will heat up. This will cause the snow on it to melt. The resulting water will flow down to the edge of the roof and gutter, where it’s considerably cooler, and refreeze, building up as the cycle is repeated with each new snowfall. In the end, water will back-up under the eaves and even into the attic.

As you can see, proper ventilation in your attic plays a vital role in preserving the integrity of your roof and protecting your home. And remember, if you do have any attic ventilation or other roofing-related problems, contact us here at Ridgecon Roofing Contractors for a free quote on repairs.