Case 1

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Remedial (see also Remedial)

  • Arrest the moisture source if any.
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  • Scrape off as much paint as possible from the wall using stainless steel brush;
  • Then wash the powdery surfaces with 5% solution of muriatic acid or undiluted vinegar.
  • Rinse thoroughly and allows complete drying to take place.
  • When it is dry, repaint the entire surface with substrate of not more than 6% moisture content.
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  • Priming or sealing the surface with appropriate primer or sealer can further prevent water seepage and stabilize the surface

Breathable Paint

Choose a mould-proof and/or breathable paint if moisture wall cannot be avoided.

The video below describes the concept of a breathable paint:

How to Deal with Blistering & Peeling by ROXSiL Breathable Paint – Courtesy of Roxsil