Mould on interior surfaces

Problem - Mildew
Black, grey or brown spots or areas occurring on the paint surface.

Possible causes

  • Mould forms on damp surfaces in spaces lacking proper ventilation, such as bathrooms, kitchens, cold storage rooms.
  • Mould was not completely removed from the surface or paint coat before painting.
  • Use of unsuitable paint on the surface, i.e. does not include an anti-mould agent.


If the problem is mould, find the cause and repair accordingly (lack of proper ventilation, stagnant water, water damage, etc.).

Remove mould with a solution of Tikkurila Homeenpoisto (Mould Removal), 1 part to 3 parts water. Protect yourself and your plants, glass surfaces, etc. from splashing. Rinse thoroughly and allow to dry.

To protect the surface against mould, use a suitable Tikkurila product. Clean the surface regularly with for example Supi Saunapesu (Sauna Cleaner).