Federal Way Roofing: Article About Roof Ventilation
Rooftop ventilation should always be a primary concern for homeowners. Not only can the right degree of ventilation help keep the home cool, but it can also help avoid damage to the roof itself. Poor ventilation will result in attic condensation, mold and ice dam leaks. All of these problems can build on each other until they spiral out of control, requiring a massive renovation procedure to help resolve the overall situation. While Federal Way roofing professionals can help with necessary rooftop repairs and replacements, all homeowners should take care of their property to make sure that their homes do not suffer unwanted damage.
No matter where the house is located, all residential building codes are designed to include some type of roof ventilation rules. These regulations were first observed in the 1940s during a time when attics experienced serious problems regarding mold and mildew because of excess moisture. Over time, specific practices were developed to help homeowners improve airflow and reduce the associated problems. As houses began to become more and more advanced with better windows, doors and insulation, they were built tighter together. These tighter spaces retain additional household moisture to a larger degree, and ordinary activities such as cooking and bathing contribute to the problem. Adequate rooftop ventilation helps clear away this moisture, preventing future problems from developing.
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There are certain rules that homeowners should follow when they prepare their ventilation space. To begin, one square foot of net free ventilation space is required per every 150 square feet of floor in the attic. One square foot of this net free space is necessary per 300 square feet if there is a vapor barrier that is installed on the lower floor's ceiling. This space can also be reduced to every 300 square feet if the there is more than 50 percent of the required ventilation at the upper section of the attic with the remaining ventilation located at the attic's eaves.
Homeowners should regularly have their attics inspected to make sure that their ventilation is up to code. Particular care should be taken around the insulation that is placed underneath the roof sheathing, such as in the spaces between rafters. This space can trap heat and moisture and contribute to declining rooftop conditions. Homeowners with ceilings that do not have vents in their soffit sections should consider installing new ones to help prevent major condensation problems. Much like with any roofing problem, early inspection can help homeowners determine whether or not they will need professional attention to correct a mistake in their roofing.