About Air Vent
Air Vent Attic & Foundation VentilationGibraltar
Air Vent was founded in 1976 as a full-line manufacturer of residential attic and foundation ventilation products, building a catalog that today covers nearly every style of roof and crawlspace airflow a home might need. CertainTeed Corporation acquired the company in 1987, and it later became part of Gibraltar, based in Buffalo, New York — now North America's largest manufacturer of ventilation products.
Air Vent operates three manufacturing facilities located in Dallas, Texas; Clinton, Iowa; and Lincolnton, North Carolina, supporting a nationwide distribution footprint for roofing contractors and building material suppliers. The company's ridge vent line spans shingle-over, tile, copper, and zinc configurations, covering both budget asphalt-shingle installations and premium architectural roofing.
Beyond ridge vents, the catalog includes powered and non-powered intake and exhaust vents, along with louvered gable and foundation vents that round out a complete attic ventilation system. ChatMRO helps roofing contractors and builders match vent style, roofing material compatibility, and airflow capacity (net free area) against the Air Vent catalog, and our team supports RFQ submissions for job-lot or distributor-volume orders.
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Frequently asked questions
What's the difference between Air Vent's shingle-over and tile ridge vents?
Shingle-over ridge vents are installed beneath standard asphalt shingles and are the most common choice for typical residential roofs, while tile ridge vents are engineered specifically to work with the profile and weight of tile roofing systems. Using the wrong style for your roofing material can compromise the weather seal, so confirming your roof type first matters.
Do I need powered or non-powered attic vents for my home?
Powered vents use an electric or solar-driven fan to actively exhaust hot attic air, which helps in larger attics or hot climates where passive airflow alone isn't enough, while non-powered vents rely on natural convection and wind. The right choice depends on your attic's size, insulation level, and local climate.
What does 'net free area' mean when selecting an Air Vent product?
Net free area (NFA) is the actual open area through a vent that air can pass through, accounting for louvers, screens, and baffles that block part of the opening. Building codes typically specify a minimum NFA ratio relative to attic floor area, so this number is essential when sizing a ventilation system correctly.
Does Air Vent make foundation ventilation products too?
Yes — alongside its attic ventilation lines, Air Vent manufactures foundation and crawlspace vents, including louvered styles, to help manage moisture and airflow beneath a home. These are often specified alongside attic vents as part of a complete whole-house ventilation strategy.
How do I find the right Air Vent product without an exact model number?
Describe your roofing material, the type of vent you need (ridge, gable, foundation, powered, or non-powered), and the required net free area, and ChatMRO's AI will match it against the indexed Air Vent catalog. This is especially useful for contractors specifying vents for a reroofing job without the original spec sheet.