A roof engineering monograph
Pricing

Simple, honest pricing

The calculator is free forever. When you need to hand a clean, defensible snow load calculation to a plan reviewer or a client, the Pro report packages it as a PDF.
The free edition
$0
  • Full ASCE 7-22 roof snow load calculator
  • Flat, sloped, minimum and rain-on-snow cases
  • §7.6.1 unbalanced load and the §7.7 drift calculator
  • Every roof type and all 50 states
  • Shareable, bookmarkable result links
The Pro offprint
PDF
$29 one-time
  • Everything in the free calculator
  • Permit-ready PDF report with all inputs and factors
  • Governing load case stated with its code references
  • Project and site fields for the plan-review submittal
  • Drift and sliding-load checklist for your reviewer

Pro offprints are in press.

Email us for early access

A RoofHelm report is a calculation aid, not a stamped engineering document. For a permit, have a licensed engineer review it and confirm the unbalanced, drift and sliding cases.