Roof venting is an important topic for both roofers and homeowners. To keep a home comfortable and prevent unnecessary roof damage that could require repair services from a roof company, roofs must be adequately ventilated. Some structures vent very well with the standard vents that are added by roofers. Other roofs need some the addition of extra vents to facilitate venting.
When considering the basic concepts in roof and attic ventilation, homeowners and an experienced roof company can determine whether their structure needs more ventilation or if existing vents are enough.
Why Roofs Must Be Vented
Although the amount and type of ventilation may differ based on climate, almost all roofs require venting for several reasons. First, venting helps to control the climate inside the home and helps prevent conditions that may cause serious damage to the roof itself. Proper ventilation also helps expel solar heat as well as prevent ice damming and other issues such as roof sweating, shingle curling, and issues that could damage both the roof and the attic.
Attic Ventilation Affects Roof Ventilation
A well-ventilated attic is essential for a well-ventilated roof. Ideally, the attic space of a home should be empty with only insulation in roof rafters and between the attic floor and ceiling. Yet many people like to use their attic as storage space or install ductwork, recessed lighting, and other things that create leaks, reduce airflow, and prevent good ventilation.
Other times the roof design itself prevents good attic ventilation. When thinking about effective roof ventilation, all of these things must be taken into consideration. If the ventilation in the attic is not ideal, the resulting poor ventilation increases the possibility of interior climate issues and damage that could require attention from a roof company.
Improving Roof Deck Ventilation
In circumstances where attic ventilation is not appropriate due to the aforementioned reasons or a complicated roof line that makes venting more challenging, it must be tackled from the roof deck. Most roofers automatically install ridge and soffit vents, which tend to work well for most homes where the attic is also well vented. Yet these vents alone may not be enough when there is poor or no attic ventilation.
This issue, regardless of whether it is caused by leaky or blocked attic spaces, vaulted ceilings, or many roof valleys, requires supplemental ventilation of the roof deck. Adding extra ridge and soffit vents are an easy solution; however, some roofers find that doing this can present its own problems. Other types of vents may need to be added to prevent moisture from leaking into these vents, upsetting the pressure inside the attic during windy conditions.
Roof and attic ventilation is a funny thing, as it can be simple in some circumstances, and extremely complicated in others. Yet for the best home efficiency and roof maintenance, it is an essential need. It is important that homeowners work with experienced roofers who understand proper roof and attic ventilation and can recognize potential problems before they occur. With the right vents that provide this ventilation, homeowners are less likely to need repair work from a roof company in the future!
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