Which statement is true regarding moisture protection for sprinkler piping?

• A. Do not provide moisture protection on CPVC.
• B. Protect pipes from moisture and corrosive fumes.
• C. Use only exterior coatings for protection.
• D. Install moisture protection only in basements.

Answer: (B)

Moisture protection for sprinkler piping is about guarding the system in spaces where dampness or corrosive fumes can attack the piping, fittings, or coatings. In low-rise residential systems, the environment matters as much as the pipe material—areas like basements, crawl spaces, garages, or mechanical rooms can expose piping to humidity, chemicals, or fumes that promote corrosion or degradation. Protecting pipes from moisture and corrosive fumes helps preserve the integrity and reliability of the sprinkler system over time. The other statements don’t fit because protection isn’t limited to one material type or restricted to exterior coatings, and it isn’t required only in basements; any space subject to moisture or corrosive vapors needs appropriate protection.