Before the floor covering work the customer should make a rough preparation of the existing floor. The sub-floor requirements are as follows:
<ul style="list-style-type: square">
	<li>Type of concrete as in the project, but not less than M 200.<br>
 </li>
	<li>Thickness of concrete at least 80 mm. <br>
 </li>
	<li>The mandatory polishing of the floor to open the pores of concrete for primer impregnating. Class of the roughness - 2.<br>
 </li>
	<li>On the concrete surface, prepared for application of anti-corrosion protection, should not be fittings, sinks, sagging, edges, oil stains, dirt and dust.</li>
</ul>