PowerWash University

302: Roof Washing (PWU-302)

You’ve washed the sidewalks, windows, and even the awnings; now generate more revenue by offering customers qualified, professional roof cleaning.

Most people don’t know that more than 50% of asphalt shingle roofs have algae, moss, or lichen growing on them. These organics can reduce the life of a roof by 20%. Algae alone can cause considerable loss to the granules that make up the shingles, causing the shingles to curl and crack and allow water to get to the underlying roof deck. Moss and lichen, through their root systems, can raise shingles, allowing the wind to tear them off.

Industry experts Brian Sauls and Michael Hinderliter will walk you through the process of cleaning a roof. They will cover: What is on the roof, Proper Chemicals and Cleaning Methods, Equipment, Cleanup and Safety.
  • Prerequisite
  • Terms of Service LS 2018
  • Introduction
  • Introduction
  • Course Introduction
  • Safety
  • Safety First, Always
  • Safety
  • Quiz: Safety
  • Algae, Moss, and Lichen
  • What is on the Roof
  • Roof Types
  • Algae, Moss, and Lichen
  • Quiz: Algae, Moss & Lichen
  • Why Do We Soft Wash?
  • Why Soft Wash the Roof
  • Why Do We Soft Wash
  • Quiz: Why Soft Wash
  • Equipment
  • Soft Wash Systems
  • Equipment
  • Quiz: Equipment
  • Preparing to Clean
  • Preparing to Clean
  • Preparing to Clean
  • Quiz: Preparing to Clean
  • On Your Mark, Get Set...
  • On Your Mark, Get Set
  • On Your Mark, Get Set...
  • Quiz: On Your Mark, Get Set...
  • Cleaning Up
  • Cleaning Up
  • Cleaning Up
  • Quiz: Cleaning Up
  • Out to the Job
  • On the Job
  • Before the job Begins
  • Cleaning with the Delux® Maverick
  • Cleaning with the Delux® Stallion
  • Quiz: Cleaning with the Delux Maverick and Stallion
  • Conclusion
  • Roof Wash: Final Exam
  • Appendix
  • Glossary
  • Chemical Dilution Table
  • Survey
  • Roof Wash 201 Survey
Completion rules
  • All units must be completed