DIY Network

How to Replace Insulation and Patch Drywall

A leaking refrigerant line creates an unsightly ceiling stain in this home. Learn how to identify and fix stains to make a ceiling look new again.

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  • tape
  • screws
  • joint compound
  • drywall joint tape
  • foam insulation
  • 2x4 board


  • drywall saw
  • safety glasses
  • gloves
  • carpenter's square
  • measuring tape
  • utility knife
  • cordless drill
  • scraper