Gypsum fillers should not be used for outside walls since they retain dampness. gypsum plastering must not be done in areas which are continuously damp such as bathroom etc. Gypsum fillers should not be used in coastal areas as is could cause efflorescence. CLASSIC CRACKFIX™ is a single component, mortar mix, easy to use, paintable, UV stable crack filler, with only addition of water at application site. CLASSIC CRACKFIX™ mixed with water, can be applied as joint filler, concrete or plaster crack filler or as a patch-up compound.


CLASSIC CRACKFIX™ enhances strength, resilience and load bearing properties. Exudes excellent water resistance, enhanced adhesion and good flexibility. Applied over damp surfaces. Can be used for filling narrow cracks. Non-shrink repair product, just add water.


  • Mixture of Portland Cement, Sika Sand and other Classic Paints Secrete Ingredients;

  • PACKING SIZE – 500 Grams, 1Kilogram, 2,5 Kilograms and 20 Kilograms.


  • Correct surface preparation is essential. All areas being treated must be thoroughly cleaned removing all loose material, dust, dirt, grime, or any other barrier to adhesion;

  • Using clean water dampen all surfaces just prior to application of the CLASSIC CRACKFIX™;

  • More water can be applied if consistency is too thick;

  • If a thicker consistency is required to give the mix better filling properties, less water should be added;

  • Ensure to mix the solution during application to avoid settling. Once mixed, Pot Life is approximately 1 hour, depending on temperatures;

  • When too much water is added, it could sag, add final scheming layer;

  • Allow minimum 4 hours drying time.


Store under cover, away from damp, rain, frost and direct sunlight.


  • The ambient temperature must be between 5ºC and 35ºC and humidity between 10% and 85%;

  • Do not apply too early as the surface may still be damp - apply only when the surface is dry;

  • Do not apply in too hot weather, rather early morning and after lunch, the slower the product dries, the longer it lasts;

  • Excessive application thickness and/or rapid drying could lead to cracking;

  • Avoid applying under adverse weather conditions as this could result in poor product performance;

  • Excessively friable surfaces should be cleaned down prior to application;

  • Not recommended for fibre glass water features or ponds;

  • Not recommended for over coating bitumen systems.


Painting is a relatively user-friendly activity if the proper precautions are taken to ensure safety;

  • It is advisable to wear gloves as CRACKFIX™ could be difficult to remove from the skin;

  • Always keep out of reach of children and animals;

  • Do not take in orally - harmful if swallowed. Seek medical attention and do not induce vomiting;

  • If accidental contact with eyes, rinse immediately with plenty of water and seek medical advice;

  • Ventilate the area to be painted, opening all doors and windows and using fans during application and drying;

  • Protect floors with cloth Drop Cloths, not plastic, which is far more slippery;

  • Make sure your ladder is in good shape. Set the legs on an even surface and lock the cross braces. Do not stand on the top of the ladder or on the utility shelf. If you are having difficulty reaching a spot, get down from the ladder and move it rather than leaning out;

  • Clean up carefully and thoroughly when you are done for the day.


Different surfaces and environmental conditions require specific painting systems to produce the best possible results - It is, therefore, recommended that you contact a representative from Classic Paints for advice on all your painting requirements, whenever possible.

The information, and, in particular, the recommendations relating to the application and end-use of Classic Paints products, are given in good faith based on Classic Paints’ current knowledge and experience of the products when properly stored, handled and applied under normal conditions. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the Product Data Sheet for the product concerned, copies of which will be supplied on request.


19/05/2022 - This supersedes all previous publications - This technical data furnished is obtained from controlled laboratory tests under ideal application conditions. No guarantee of any performance characteristic is given or implied and we do not hold ourselves responsible for any consequential damage of whatsoever nature that may arise from use of our products. In the event of a proven product fault our liability will be limited to the replacement of the product only. It is the user’s responsibility to confirm the currency of product data sheets.

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