Greeley Roofing: Article About Improper Attic Ventilation
People who hesitate to ventilate their attics usually do so because they fear that adding vents will reduce energy efficiency. If you're in this camp, then rest assured that attic ventilation does not compromise your home's heating and air system. In fact, proper ventilation in your Greeley roofing system can actually reduce your energy costs over time. Heat rises, but it doesn't rise to the attic. If it does, then you most likely have an insulation problem rather than a ventilation problem.
During warmer months, your home will lose energy in a variety of ways. Proper attic ventilation will reduce energy costs during the summer by allowing a constant flow of cool air. If you're wondering why a hot attic makes a difference, then consider your shingles. Hot air turns your roof into an oven, which can effectively cook your shingles and quicken their deterioration. Improper ventilation may significantly reduce the lifespan of your roof.
Colder months bring a different set of issues. During winter when you have the heat on, warm air flows upward into the attic. Without adequate ventilation, the warm air lingers and builds up moisture. This can lead to mold and water buildup over time. Additionally, the trapped warm air will melt precipitation on the roof.
A roofer from Colorado Roof Toppers of Greeley CO can answer questions you have about wind damage or insurance repairs.
Once the precipitation hits the colder gutters and eaves, it refreezes, forming a condition known as ice dams. Ice dams create a blockage that could lead to further water intrusion in the shingles.
Another important consequence of improper ventilation is that it could void your manufacturer's warranty if you have asphalt shingles. Warranties more often than not won't cover water damage or other issues caused by improper ventilation. Failing to properly ventilate your attic could cost you thousands of out-of-pocket dollars, making the relatively low upfront cost of ventilation a worthwhile investment.
The mere presence of roof vents doesn't mean that you have the right amount of ventilation or that your attic is safe against threats. Creating a proper ventilation system means using precise calculations to determine exactly how much ventilation you need. Your local development office should offer a guide for adequate ventilation, and your preferred roofing contractor should be able to perform the calculations for you.
Keep in mind that you can have too much ventilation, and here's why: The more you puncture the roof, the more vulnerable it is to water intrusion. Just as you should avoid walking on your roof during your semi-annual inspections, you should also avoid having too large vents installed because they open up the possibility of rain and debris falling into the roofing system. Ventilation goes both ways, which means you need to hire an experienced contractor to develop a system that reflects your needs exactly.