• How to repair stable (not subject to movement) cracks and/or micro-cracks in the MORTEX® coating?

    Repairs can be made with MC 2-F1-F2-F3-F4 depending on the width of the cracks. One of these products must be able to penetrate with its full grain size.

    Please take into account that the finer the grain size curve, the whiter the powder of the MORTEX® product, F4 being the finest grain size.

    Example: repair of a micro-crack using a mixture of MC2-F4 tinted in the colour of the job site.

    1. Vacuum dust from the crack or micro-crack and clean with water if necessary.

    2. Wait for complete drying.

    3. Make a test on a board for colour control (comparison test) after waiting for the F4 to dry completely.

    4. Then, place this test board on your support to compare the result (without forgetting that you will still varnish it).

    5. Treat this test with the protection applied (BIPUR – BEALWAX – POLYTHANE N 120,…) on the building site to give the final real colour. The protection can indeed still bring changes in colour.

    6. After processing your sample board, repeat the tint check.

    7. Repeat the operation if the result is not positive. You can carry out several shade tests at the same time. This will save you time.

    8. When you reach the desired shade, make a small mixture with the right proportion of BEALCRYL 2.

    9. Place a small quantity of the made mixture on the tip of a gloved finger, place this finger on the crack and insert the MORTEX COLOR-F4 product by twisting the finger so that the material penetrates the crack.

    10. Wait 48 hours for drying.

    11. Apply the protection according to the installation protocol.

    Overfilling the crack can help to hide stains in the case of a speckled finish.

    Also see FAQ “How can we try to reduce the appearance of cracks due to movement in the MORTEX® coating?”


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