--- title: Can a flanged roof louver be installed on a a 5-V-Crimp metal roof? description: As with all metal roofing, it is best to install a roof curb first to mount flanged roof louvers. --- [Skip to content](https://help.gibraltarbuildingproducts.com/en/knowledge/customer-has-an-air-vent-rvg40-roof-louver-he-wants-to-install-on-a-5-v-crimp-metal-roof#main-content) English Show submenu for translations ![GBAD Full Color.png](https://blog.stealthbond.com/hubfs/GBAD%20Full%20Color.png) Open main navigation Close main navigation - 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/en/knowledge?hsLang=en) 2. [Ventilation](https://help.gibraltarbuildingproducts.com/en/knowledge/ventilation?hsLang=en) 3. [Roof Louvers](https://help.gibraltarbuildingproducts.com/en/knowledge/ventilation?hsLang=en#roof-louvers) # Can a flanged roof louver be installed on a a 5-V-Crimp metal roof? ## As with all metal roofing, it is best to install a roof curb first to mount flanged roof louvers. As with all metal roofing, it is best to install a roof curb first to mount Air Vent roof louvers and powered roof vents to (excluding ridge vents). Check with the roofing panel manufacturer to determine what roof curb flashing may be available and for guidelines on how to install any product to a roof curb. The only guidelines that Air Vent has is that the product flange be flashed/sealed so that there is no water infiltration and that the product be installed with a minimum of 8 roofing fasteners that are long enough to fully penetrate the support sheathing beneath the flange (per Texas Department of Insurance Roof Vent Evaluation Report RV-20). - [Metal Roofing](https://help.gibraltarbuildingproducts.com/en/knowledge/metal-roofing?hsLang=en#main-content) - [Metal Roofing](https://help.gibraltarbuildingproducts.com/en/knowledge/metal-roofing?hsLang=en#metal-roofing) - [Oil Canning](https://help.gibraltarbuildingproducts.com/en/knowledge/metal-roofing?hsLang=en#oil-canning) - [SMRIB Profile](https://help.gibraltarbuildingproducts.com/en/knowledge/metal-roofing?hsLang=en#smrib-profile) - [5V Crimp Profile](https://help.gibraltarbuildingproducts.com/en/knowledge/metal-roofing?hsLang=en#5v-crimp-profile) - [Job Packs](https://help.gibraltarbuildingproducts.com/en/knowledge/metal-roofing?hsLang=en#job-packs) - 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