Mud Brick Water Repellent

Tech-Dry® Mud Brick Water Repellent is a solvent-based silane/siloxane impregnant for mud brick or other rammed earth buildings. The product is designed to penetrate into the capillaries of substrate surfaces and make the substrate water repellent. It is suitable for use on rammed earth walls.

Once applied, it provides long term protection against water penetration, mould growth and efflorescence as it reduces the absorption of water into the rammed earth building. It also provides protection against water-borne staining materials which are responsible for the bulk of the deterioration in earth building materials and rammed earth walls.

When applied on rammed earth walls or other surfaces, the treatment will not significantly change the appearance of the substrates and the vapour permeability.


  • Penetrates into the substrate surface.
  • Permanently bonds to the substrate with no peel or blister.
  • UV, alkali stable and durable formulation.
  • Reduces water penetration, efflorescence and water-borne staining.
  • Does not significantly change the surface appearance and vapour permeability.
  • Easy application and cost effective.
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