Mastatape-in is an air drying compound for bedding tape into recessed edges and butt joints for plasterboard systems. It is also suitable for second coating joints, for internal and external angles as well as fastener heads.

This compound is ideal for use with mechanical taping and setting tools, minimising time spent mixing and cleaning. Perfect for projects where access to water is limited.

Further information


  • Use with Siniat paper tape
  • Maintain a minimum 10°C working temperature during application and drying.
  • Allow to dry completely between coats.
  • For the strongest ready-mix joint, use mastatape-in for the second coat.
  • Do not apply setting cements like Mastabase and Mastalongset over air-drying compounds.


  • Fast application
  • Strong tape bond
  • Ready to use
  • Reduce cleaning and mixing time

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