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Ridge and Attic Vents in Cedar Park
Summer heat is one of the main stresses on a roof here. Venting the attic properly is cheap compared with the shingles it protects.
An attic needs air coming in low at the eaves and going out high at the ridge. Many houses have plenty of one and little of the other.
The contractor measures the attic, checks that soffit vents are open and not buried in insulation, and adds or replaces exhaust vents to balance the two.
Why It Matters in Central Texas
There is no winter roof problem to speak of here. The stresses are hail, summer heat and drought. A closed-up attic in July bakes the underside of the shingles and makes the air conditioner work against a hot ceiling.
Ventilation does not make an attic cool. It keeps the attic from running far hotter than the outdoors and carries off moisture from bathrooms and kitchens.
Intake and Exhaust
- Soffit vents are the intake. They sit under the roof overhang. They get painted shut, blocked by insulation, or were never cut in behind a vented-looking panel.
- Ridge vent is a slot cut along the peak and covered with a vent strip and cap shingles. It exhausts evenly along the whole roof.
- Box vents are the square hoods near the ridge. They work, and several are needed.
- Powered and turbine vents pull harder, and can pull conditioned air out of the house if intake is short.
The usual advice is to pick one kind of exhaust. A ridge vent combined with box vents or a power fan can short-circuit, with air entering one exhaust and leaving another and never sweeping the lower attic.
When to Do It
The easy time is during a re-roof, when the ridge is open anyway. Because a Cedar Park re-roof gets no city inspection, ask the roofer to state the vent plan in the scope: how much intake exists, what exhaust is going on, and whether old box vent holes will be decked over.
Vents can also be added to an existing roof. Soffit work is covered on the soffit and fascia page.
A Note on Embers
Vents are openings, and wind-blown embers can pass through large ones. Fine metal mesh behind soffit and gable vents is a common recommendation in wildfire guidance. No Cedar Park rule requiring it was found. Ask the contractor what mesh is on the vents being installed.
Questions About Ridge and Attic Vents in Cedar Park
How do I know if my attic is under-vented?
Clues are an upstairs that will not cool in the afternoon, shingles that curl early, and rusty nail tips or damp insulation in the attic. A roofer can calculate what the attic needs from its floor area.
Will a ridge vent leak?
Installed correctly, with the right slot width and cap shingles nailed through the vent, it does not. Leaks come from slots cut too wide or vents ending short of where they should.
Do gable vents count?
They move some air near the ends of the attic. Combined with a ridge vent they can interfere with the flow from the soffits. A contractor may suggest closing them off from inside.
Hot Upstairs, Hot Attic?
A local roofer can check the intake and exhaust and tell you what is missing.
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