Green Infrastructure Calculators
Professional tools for stormwater management and green roof design
Location-Specific Calculators
Regulatory compliance calculators based on local stormwater management regulations.
NYC DEP
Calculate WQv, RRv, and Vv for NYC stormwater compliance
Washington D.C.
Stormwater calculator for D.C. projects (DOEE SWMG 2020)
Philadelphia (PWD)
Stormwater calculator for Philadelphia PWD projects.
Chicago
Stormwater calculator for Chicago projects.
Sempergreen Tools
Specialized tools for green roof design, cost estimation, and technical resources.
Cost Estimator
Generate cost estimates and performance metrics for green roof profiles
Specification Generator
Create and customize green roof specifications for your projects.
Green Roof Profile
Visually design green roof layers and see performance data.
PDF Report Builder
Merge multiple PDF files into a single, combined report.
Technical Library
Product datasheets, ASTM reports, technical memos, and installation guides.
HydroCAD Generator
Model Purple Roof systems and generate HydroCAD project files.
CADdetails
Access our product library and technical drawings on CADdetails.