First, hot air naturally rises and exits out the ridge vent, pulling in cool air from below. Second, positive airflow across the ridge of the house creates a “venturi effect”, or a negative pressure, which pulls air out of the ridge vent and brings in cool air from the soffits below.
Do ridge vents really work?
The truth is, most experts agree that though other roof vents allow some ventilation (which is better than none), ridge vents are the most efficient and cost-effective roof ventilation system around. Our recommendation is yes. Especially if you are installing a new roof, you want to extend its life as long as possible.
How do ridge vents keep water out?
There are various entry points for moisture in your roof; rain can enter your roof through any of these. One potential entry point is the ridge vent. Ridge vents prevent moisture problems by letting warm air out, but wind-blown rain can enter if the vents are damaged.
Is a ridge vent enough ventilation?
A ridge vent along with other vents that draw in colder air is enough ventilation. However, a ridge vent alone without some intake vents wouldn’t do as much. We highly recommend installing soffit or gable vents along with a ridge vent or some other form of air intake.
What is a ridge vent and how does it work?
What Is a Ridge Vent? A ridge vent is usually made from aluminum or a mesh-type material and is installed underneath the final layer of shingles to create airflow across the exterior roof. It draws hot, moist attic air out through the ridge vent and pulls fresh air into the attic through the soffit vents.
Do you need roof vents if you have a ridge vent?
Does my roof need a ridge vent? Yes, If you live in a hot or humid climate a roof ridge vent can lower your cooling bills and lower you attic temperature. While there are many types of roof vents available, many experts agree that ridge vents are the most efficient and cost-effective ventilation system.
What is better ridge vent or roof vent?
Ridge Vents vs Box Vents. Continuous ridge vents are more effective because they are installed at the peak of a roof’s ridge, allowing for warm air to escape from the attic. It also works better because it creates a vacuum in your attic.
Do ridge vents ever leak?
With proper installation and care, ridge vents should not leak. However, improper installation leads to leaky vents. In some cases, installers will use the wrong nails or shorter nails to secure the vents to the structure. Another problem that can lead to leaking roof ridge vents involves sealant.
How do you tell if your ridge vent is installed properly?
In general, to find out if your ridge vent is installed properly, walk along its entire length and pull the vent slightly upward every few meters. Inspect the vent for any loose seams or fasteners; have them repaired as soon as possible. Even a nail slightly out of place can cause problems later on.
Should you see light through a ridge vent?
Yes, you should always see the light coming from the ridge vents when you look up at them from the side of the house. Light coming through the ridge vent can indicate that they are not clogged and that both air and light can freely travel through the ridge vent without becoming obstructed.
Do you need attic fan if you have ridge vent?
An attic fan isn’t recommended if you have ridge vents. In this scenario, the attic fan will draw cool, conditioned air out of your house and raise your A/C bill. It could also stop hot air from exiting through the ridge vent and pull in rainwater during a storm, which can eventually make your attic leaky or moldy.
Can an attic have too much ventilation?
It’s possible to have too much exhaust ventilation, but you cannot have too much intake ventilation. If there is more intake ventilation than the attic’s square footage requires, it’s not problematic because any excess intake converts to “exhaust” on the leeward side of the house.
Can a ridge vent be installed on an existing roof?
An efficient way to gain enough venting area in the roof is by installing ridge vents. Both metal and shingle-over ridge vents are available, according to Lowe’s. The basic procedure for installing them is the same, but you have to cover the latter variety with shingles.
Can you walk on a ridge vent?
While on the roof, walk along the entire ridge vent and make sure that all of the fasteners are secure and in place. Usually, they should be placed every 18 inches apart. Roofing nails can come loose over time, especially when there are strong guests of wind from heavy storms.
Do you need soffit vents with ridge vents?
Ridge vents can work without soffit vents, however, this won’t be very energy efficient. Without soffit vents, the ridge vents will draw air from some other inlet on the roof like a gable, but this will limit the extent of air circulation in the attic.
Is a ridge vent better than an attic fan?
Ridge vents are much cheaper and more durable than attic fans. They’re more cost and energy-efficient. But they can’t ensure proper ventilation always. Hence, for larger and congested spaces, an attic fan is the best option.