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International Ltd.

Swinnenwijerweg 12
B-3600 Genk - Belgium
Tel: +32 (0)89 / 24 .80 .81
Fax: +32 (0)89 / 24 .80 .86


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The surface is obviously the most critical part of any floor. Surface defects can also be the most difficult floor problems to repair since it is subject to constant abrasion, wear and impact. For the purposes of brevity, this page will cover only a few of the more common surface defects.


Dusting is a condition that usually occurs as a result of poor finishing techniques and/or poor curing. This dusting indicates that the surface is relatively soft and weak. There is most of the time a sure cure for correcting this weakness by treating the floor with a liquid hardener like InTelliSeal (Li). This will reduce dusting and improve wear ability.


This condition is where the top 2mm or 6mm of the surface comes off, leaving the underlying aggregate exposed to wear. The causes are usually improper finishing, although certain aggregates can cause popouts that yield a similar appearance.

Smal areas can be repaired by drilling little holes and 'glue-ing' the dryshake back to the sound concrete. Identifying where these areas are will be performed by the chain-drag method. By dragging a special kind of chain over the surface different sounds will be produced between good and delaminated areas. Know this is an arbitrary means of finding delaminted areas and it'seffectiveness is highly dependant on the skill and experience of the technician.

If the results of delamination problems can be seen all over the surface, then correction requires that the entire surface be stripped away down to sound concrete, often 6mm to 1cm.

The surface is then replaced with an epoxy or polymeric grout overlay. The cost of this procedure is high, the results seldom 100% successful and special equipment is almost always advisable.

Another very succesfull means of repair is grinding into the sound concrete layer and polishing and densifying this surface. (The owner will be pleased with the added advantages of his new InTelliFloorTM)


Crazing is a defect that looks like a series of cracks in the surface resembling a chicken wire pattern or a map. Crazing is seldom a serious problem, especially if the cracks remain tight and relatively shallow. The typical cause of crazing is rapid drying of the surface caused by wind, heat, poor curing, etc.  If there is concern as to the long term durability/wear ability of the surface, a treatment with a high solids sealer is usually appropriate (InTelliSeal Mx).  If the floor starts to delaminate, resurfacing may be required. There are many additional problems that can befall a new floor besides those discussed in this abbreviated article.

We hope you will contact us if you need help or even just information on any of them. There is never a charge nor any obligation for any technical assistance we provide via phone, fax or email. Your new floor is vital to the productivity of your operations.