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SafetyCrete Dairy Shed Repair Mortar

Concrete etching solution
20 Litres

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Concrete etching solution, 20 Litres

GEMSTRIP ACID ETCH is an acid based etching solution for removal of alkaline salts (laitance) that form on the surface when concrete cures. These must be removed from the concrete surface before coating or adhesion of the coating will be compromised.

Download 6.141 GEMSTRIP AE Product Sheet

Physical properties

  • Appearance: water white liquid Odour: acidic pH: acidic – CORROSIVE 8!
  • Coverage: typically 5-10 sq m /litre – depends on substrate
  • Packaging 5 & 20L jerry cans

Method of Application

  • Use eye goggles and protective clothing. AVOID contact with eyes or skin – wash off with plenty of water if splashed on skin or in eyes. Pour on to concrete and broom on with acid resistant broom (e.g. PVC). Allow to bubble - ACID ETCH is reacting with and neutralizing laitence. When bubbling finishes wash off with plenty of water. Check pH is 7 (neutral) – if not then keep washing until it reaches pH 7.

Handling Precautions

  • Keep away from children.
  • Avoid contact with eyes and skin.
  • Wear goggles and protective clothing.
  • Do not ingest.
  • Do not inhale


The information provided is accurate to the best of our knowledge. We can not however anticipate all conditions under which this information and our products may be used. We therefore accept no responsibility for results obtained by the application of our products, or  for their safe use  and suitability. GemCo Limited sells these products without warranty and buyers  and users assume  all  responsibility and liability for loss or damage arising from the handling  and use of our products.