The Roofing Marketplace

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Columbia Green Technologies introduces stormwater services

Columbia Green Technologies offers comprehensive green roofing solutions. We now are able to offer complimentary, project-specific stormwater calculations to help demonstrate return on investment for a green roof system. The dynamic model predicts runoff through our modular green roof systems. This information can be incorporated into the detention routing for the entire site. Using a green roof system for stormwater retention may allow the reduction of other costly stormwater treatment mechanisms, such as underground detention tanks. For more information, visit

Introducing the new NRCA app!

Make the most of your membership with the NRCA app and receive free access to NRCA publications. Take NRCA resources with you anywhere, even on the roof. The app is available through the Apple App Store, Google Play or Windows Store. For more information or for answers to frequently asked questions, visit