Roof ventilation allows the free flow of air through an intake and exhaust system.
Roof ventilation is important because it:
- Extends the life of your roof
- Minimizes energy costs
- Eliminates indoor temperature extremes
- Prevents damage to your roof
By allowing air to flow freely through the attic space, the attic won’t be overheated and accumulate excessive moisture. Roof ventilation systems are unique to every home, so you need to work with an experienced roofing contractor who understands code requirements, ceiling and roof designs, and regional climate.
Extends the Lifespan of Your Roof
Poor attic ventilation leads to roof damage. When heat from inside your attic space combines with warmth from the sun, it causes snow and ice to melt on your warm roof. The resulting water then runs to the roof’s edge and begins to refreeze. As the water and ice build up at your roof’s edges, it can back up underneath the shingles, causing damage to your entire roofing system as well as the attic and walls inside your home.
Correct roof ventilation allows warm air in the attic space to escape before it gets a chance to melt the snow on your roof. Although you will still have snow on your roof, you won’t see any icicles on your roof’s edge.
Proper ventilation also benefits your roof when the outdoor temperatures soar. The temperatures of your roofing material can nearly double. A hot roof over a poorly ventilated attic translates into a sweltering attic since there is no escape route for the heat build up. Over time, this heat buildup can damage your roofing material from the inside out.
Proper ventilation allows the hot air to escape, keeping your attic and roof cooler.
Reduces Energy Costs
When the outdoor temperature increases, you’ll want to stay cool inside by powering your air conditioners. Properly roof ventilation allows indoor heat to escape, reducing the burden on your air conditioner. Of course, an air conditioner running less translates into reduced electric bills.
Reduces Indoor Temperature Extremes
If you notice your downstairs rooms are much warmer than upstairs, then your attic may be poorly ventilated. Once your roof is sufficiently vented to allow cool air to enter and hot air to escape the attic space, your home will feel much more comfortable year-round.
Is Too Much Ventilation Undesirable?
An experienced roofing contractor can provide you with the exact number of roof vents needed for your unique roof. However, the rule of thumb is to install a single vent for every 300 square feet for attics with vapor barriers. If there is no vapor barrier, you should have one vent for every 150 square feet.
Always work with a professional roofer to ensure you have the right balance of ventilation. At Bill West Roofing, we have decades of experience installing, repairing, and replacing roofs in Lee’s Summit, MO, and surrounding communities. We have the expertise to help you with all of your roofing ventilation needs. Contact us today to schedule your free consultation!