National Roofing Contractors Assn., releases updates to its Roof Wind Designer app

Significant changes to online wind-load calculator.

March 26, 2018 |

The National Roofing Contractors Association recently made significant updates to its Roof Wind Designer.

The online wind-load calculator is intended to offer roofing professionals an easy way to determine roof systems' design wind loads for many common building types that are subject to code compliance. The free web-based application has been updated to include changes made to ASCE 7, “Minimum Design Loads and Associated Criteria for Buildings and Other Structures.”

There were changes to basic wind maps, new roof zone layouts, and to pressure coefficients. Roof Wind Designer also added the ability to perform wind-load calculations for the 2016 version of ASCE 7, and enables users to choose between three versions of the standard: ASCE 7-05, ASCE 7-10, and ASCE 7-16.

The 2016 version of the application also can be used on flat buildings up to 160 feet tall using the standard's Chapter 30, Part 4: Buildings with 60ft < h ≤ 160ft (Simplified). For more information, visit

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