Low-slope wind uplift calculator.
For roof slopes under 2:12. Enter site-specific wind speed from the ASCE Hazard Tool to get Zone 1, 2, and 3 design pressures. Zone 3 controls system selection.
Wind Uplift Calculator
Low-slope roofs — slopes under 2:12. Estimates only; verify with a licensed engineer.
Zone 3 controls system selection. Your approved product must meet or exceed this pressure. Confirm final values with a licensed engineer before installation.
Get site wind speed
Go to ASCE 7 Hazard Tool and enter the exact property address. Record Basic Wind Speed (V). Do not use wind maps.
Enter values and calculate
Input wind speed, roof height, exposure category, and building width above. Click Calculate.
Note Zone 3 pressure
This is your minimum product approval threshold. Your system must be approved for at least this value.
Search approvals
Go to EngineeringPlans.com and find approved systems meeting or exceeding your Zone 3 value.