Undesirable sticking together of two painted surfaces when pressed together (e.g. a door sticking to the jamb).


  • Not allowing sufficient dry time for the coating before closing the door or window
  • Use of low quality semi gloss or gloss paint


Use a premium semi gloss or gloss waterbased enamel paint. Low quality semi gloss or gloss waterbased paints can have poor block resistance, especially in warm, damp conditions. Follow the paint label instructions regarding drying times. Waterbased enamel paints have better early block resistance than oil based paints.

Source: The Paint Quality Institute

Aalto recommends Aalto WB Enamel Gloss or Semi Gloss.

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