Ridge vents run the length of a sloped roof at the peak. As a part of the attic ventilation system, it helps prevent damage caused by hot and humid air. The roofing contractors at Mobley Brothers Roofing & Restoration share a closer look at this essential roofing component.
Why Your Home Needs Ridge Vents
Hot and moist air tends to rise, which means, in a typical residential building, all of this would collect in the attic. Trapped heat and moisture can result in the following problems:
- Damage to the Roofing Structure — Most parts of the roofing structural support is made of wood. Exposure to excessive heat and moisture can result in warping. This could lead to a premature roof replacement if left in the same condition over time.
- Damage to Roof Insulation — Most types of roof insulation tend to form clumps when in contact with moisture. This leaves holes or gaps where heat can escape, which can affect your home’s heating and cooling costs.
- Mold and Mildew — Raised moisture levels in the attic is conducive to mold and mildew growth. If left unchecked, it can degrade indoor air quality and cause respiratory problems.
How Do Ridge Vents Work?
The roof peak is where heat from the attic would ultimately collect, and therefore it is where ridges would be most effective. Roofing planes do not actually meet each other at the peak; there are gaps that allow air to escape, much like what chimneys are to fireplaces. To prevent rainwater from infiltrating these gaps, ridge vents cover the top and allow heat to escape the sides. During installation, ridge vents are covered by ridge caps for a cleaner look.
Purged warm air creates negative pressure in the attic, which pulls air from the intake vents located at the soffits. If these soffit vents are properly sized, it should pull fresh air in as fast as warm air is released, creating a continuous ventilation cycle that keeps the attic relatively cool.
Mobley Brothers Roofing & Restoration is your leading provider of roof replacement services. Give us a call at (615) 906-1195 or fill out our contact form. We serve customers in Knoxville and Lebanon, TN.