--- title: What would cause a strong exhaust coming back into the attic from the sides of the gable-mount exhaust fan? description: If the gable fan is blowing back into the attic, check to see that the gable fan is free of any debris that could prevent airflow from properly exhausting. --- [Skip to content](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/customer-recently-purchased-model-wcgb-1320-cfm-gable-mounted-attic-fan.-when-it#main-content) English Show submenu for translations ![GBAD Full Color.png\]](https://help.gibraltarbuildingproducts.com/hs-fs/hubfs/GBAD%20Full%20Color.png?height=40&name=GBAD%20Full%20Color.png) - [Default HubSpot Blog](https://semetals-1971711.hs-sites.com/blog) Open main navigation Close main navigation - [Default HubSpot Blog](https://semetals-1971711.hs-sites.com/blog) - English Show submenu for translations - Go to www.gibraltarbuildingproducts.com Go to www.gibraltarbuildingproducts.com Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://help.gibraltarbuildingproducts.com/migration/en/knowledge?hsLang=en) 2. [Ventilation](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en) 3. [Power Fans](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#power-fans) - [Metal Roofing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#main-content) - [Metal Roofing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#metal-roofing) - [Oil Canning](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#oil-canning) - [SMRIB Profile](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#smrib-profile) - [5V Crimp Profile](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#5v-crimp-profile) - [Job Packs](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#job-packs) - [Roofing Accessories](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/metal-roofing?hsLang=en#roofing-accessories) - [Rainware & Gutter](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/rainware-gutter?hsLang=en#main-content) - [Gutters](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/rainware-gutter?hsLang=en#gutters) - [Soffit](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/soffit?hsLang=en) - [Trims & Flashing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/trims-flashing?hsLang=en#main-content) - [Other](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/trims-flashing?hsLang=en#other) - [Ventilation](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#main-content) - [Ventilation](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#ventilation) - [Intake](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#intake) - [Edge Vent](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#edge-vent) - [Whole House Fan](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#whole-house-fan) - [Ridge Vent](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#ridge-vent) - [Power Fans](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#power-fans) - [Ice Dams](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#ice-dams) - [Internal Weather Filter](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#internal-weather-filter) - [External Wind Baffle](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#external-wind-baffle) - [Exhaust Vent](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#exhaust-vent) - [Solar Power Fans](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#solar-power-fans) - [Roof Louvers](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#roof-louvers) - [Undereave Vents](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#undereave-vents) - [Mini Louvers](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#mini-louvers) - [Bath/Dryer Vent](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#bath-dryer-vent) - [Continuous Soffit Vents](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#continuous-soffit-vents) - [Wind Turbines](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#wind-turbines) - [Foundation Vents](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#foundation-vents) - [Skylight Tubes](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#skylight-tubes) - [Shingles](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#shingles) - [Underlayment](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#underlayment) - [Vented Drip Edge](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#vented-drip-edge) - [Wall Louvers](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#wall-louvers) - [Kwikmesh](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#kwikmesh) - [Flue Guard](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#flue-guard) - [Off Ridge Vent](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/ventilation?hsLang=en#off-ridge-vent) - [Material](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/material?hsLang=en#main-content) - [Gutter Protection](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/material?hsLang=en#gutter-protection) - [Customer Service](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/material?hsLang=en#customer-service) - [Warnings](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/material?hsLang=en#warnings) - [Material Type](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/material?hsLang=en#material-type) - [Fasteners](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/fasteners?hsLang=en) - [Uncategorized](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/uncategorized?hsLang=en) - [Trims and Flashings](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/trims-and-flashings?hsLang=en#main-content) - [Trims and Flashings](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/trims-and-flashings?hsLang=en#trims-and-flashings) - [Customer Service](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/trims-and-flashings?hsLang=en#customer-service) - [Other](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/other?hsLang=en#main-content) - [Other](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/other?hsLang=en#other) - [Miscellaneous](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/other?hsLang=en#miscellaneous) - [Flashing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/flashing?hsLang=en#main-content) - [Flashing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/flashing?hsLang=en#flashing) - [Siding](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/siding?hsLang=en#main-content) - [Siding](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/siding?hsLang=en#siding) - [Soffit & Fascia](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/soffit-fascia?hsLang=en#main-content) - [Soffit & Fascia](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/soffit-fascia?hsLang=en#soffit-fascia) - [Pipe Flashing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/pipe-flashing?hsLang=en#main-content) - [Pipe Flashing](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/pipe-flashing?hsLang=en#pipe-flashing) # What would cause a strong exhaust coming back into the attic from the sides of the gable-mount exhaust fan? ## If the gable fan is blowing back into the attic, check to see that the gable fan is free of any debris that could prevent airflow from properly exhausting. If it is blowing into the attic check to see that the gable fan is free of any debris that could prevent airflow from properly exhausting. Also, for Air Vent gable fans it would be best to use Air Vent's automatic shutter designed specifically for the fan. - [Default HubSpot Blog](https://semetals-1971711.hs-sites.com/blog) [![Gibraltar Building Accessories Logo](https://help.gibraltarbuildingproducts.com/hs-fs/hubfs/GBAD.jpg?width=2500&height=777&name=GBAD.jpg "Gibraltar Building Accessories Logo")](https://www.gibraltarbuildingproducts.com/) www.gibraltarbuildingproducts.com Help Center Copyright © 2026, Gibraltar Building Accessories Division