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Fixing & Preventing Paint Blocking or Sticking

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                          Paint blocking on a door
            (Photo courtesy of The Paint Quality Institute)

Poor resistance to paint blocking can result in painted surfaces sticking together, such as a door sticking to the jamb.

Paint blocking is an adhesion problem that occurs when two freshly painted surfaces stick together when pressed against each other. When separated, the surfaces show paint transfer or peeling.

What Causes Paint Blocking or Sticking?

  • Insufficient time is allowed for the paint to cure before closing doors or windows
  • Using low-quality semi-gloss or gloss paints
How to Prevent Paint from Sticking
  • Use top-quality alkyd paint or semi-gloss or gloss acrylic latex paint. Low-quality latex paints can have poor block resistance, especially in warm, damp conditions.
  • Follow paint label instructions regarding dry times
  • Doors and windows should be adjusted to open and close properly

How to Solve Paint Blocking or Sticking

  • Apply talcum powder, wax, or soap on the problem area to temporarily relieve sticking.
  • Remove all loose paint and sand the surface. Glossy surfaces should be sanded dull.
  • Clean the area and allow it to dry.
  • Prime as needed and apply topcoat. Follow manufacturer's instructions regarding drying time.

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