Zinsser Mould Stop Primer

Zinsser Mould Stop Primer is a water based fungicidal protective coating that can be used to paint over all existing mould, mildew, moss, fungi, odour causing bacteria and any other fungal organisms. The Mould Stop Primer contains an EPA registered antimicrobial to prevent the growth of mould, mildew and other fungal organisms on the paint film. The Mould killing Primer also aides in covering residual microbiological and fungal stains.


  • Paint directly over mould
  • Kills existing mould, mildew, and odour causing bacteria
  • Binds chalky siding, masonry, and metal Interior /Exterior
  • For stains caused by water leaks, allow Mould Killing Primer to dry then use a Zinsser stain blocking