How can a handyman protect themselves when dealing with client-provided materials?

Direct answer: For client-provided materials, set boundaries: you warranty workmanship, not defective parts. Document what was supplied, note defects immediately, and price delays or re-trips when the wrong materials show up.

Practical steps

• Set boundaries: Warranty workmanship only.
• Document supplies: Note what client provided.
• Price delays: Charge for wrong material re-trips.