Improper roof maintenance, repairs and care reduce the longevity of your roof. You can hire the best roof contractor, but if you don’t have adequate roof ventilation, you are looking at costly roof repairs down the road. Let’s explore why roof ventilation is so important.
Poor Roof Ventilation
Poor roof ventilation commonly leads to energy loss, ice dams, rot and mold, and it can render your roof ineffective in the case your roof shingles begin buckling. There are different components to your roof. While the roof, as a whole, protects your entire home, each part of the roof works together to benefit and protect one another. Remove just one of those components, and the rest of the roof will quickly deteriorate.
In short, you don’t want inadequate ventilation because you don’t want the risk of moisture seeping in. The purpose of ventilation depends on climate conditions as well; however, ventilation provides benefits for homes in warm and cold climates. In a warmer climate, roof ventilation serves to allow heated air a means to escape so that the rest of the home can remain cooler. This also depends on the home’s attic insulation. In a colder climate, poor ventilation can cause ice dams to form on top of the home, which is bad for both the home and for anyone passing underneath these ice dams. Another concern for ventilation is to avoid excessive moisture, which can lead to wood rot, mold or mildew issues. This said, it’s extremely important to have adequate attic insulation as well.
Proper attic ventilation systems allow a continual flow of outside air through the attic, protecting the efficiency of the insulation and helping to lower temperatures in the living space.
It consists of a balance between air intake (at your eaves or soffits) and air exhaust (at or near your roof ridge).
The U.S. FHA (Federal Housing Administration) recommends a minimum of at least 1 square foot of attic ventilation (both intake and exhaust) for every 300 square feet of attic space. For example, if your attic is 900 square feet, you need a total of 3 square feet of ventilation. This amount should be divided equally between intake and exhaust ventilation (i.e., 1 1/2 feet of each) to insure proper air flow through the attic.
The type of roof vents you acquire depends on your individual needs. It depends on the intended purpose for your ventilation, your type of roof and the climate conditions throughout the year. Contact us as your roof contractor immediately to ensure your roofing job is done correctly.