--- title: Is the 12 ft. 5V Crimp Galvanized Steel 29-Gauge Roof Panel material appropriate for rainwater catchment to be used for potable drinking water? description: This material is appropriate for rainwater catchment. --- [Skip to content](https://help.gibraltarbuildingproducts.com/migration/en/knowledge/is-the-12-ft.-5v-crimp-galvanized-steel-29-gauge-roof-panel-material-appropriate-for-rainwater-catchment-to-be-used-for-potable-drinking-water#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. 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Yes, this material is appropriate for rainwater catchment. Metal roofing for rainwater harvesting is considered one of the best options for maximum efficiency and potability of the harvested rainwater. In any building, a roof is the major catchment area of rainwater, making the quality of the roofing material highly important. According to scientific research, a metal roof has an estimated efficiency quotient of 0.9 on a scale of zero to one. This is ideal for maximum catchment of rainwater. It is obvious that rainwater catchment would be higher with smoother surfaces. All types of metal roofing materials, such as galvanized iron, corrugated steel, aluminum, various alloys, etc. provide not only smooth surfaces, but they are also bacteria-resistant. Hence, the harvested rainwater is highly potable. Metal roofing easily meets major criteria required for roofing materials used in catchment of rainwater. Rooftop rainwater collections are quickly becoming a popular choice for builders, both commercial and residential, seeking sustainable, eco-friendly water harvesting solutions. Metal roofing provides the optimal catchment surface for rooftop rainwater harvesting systems. - [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