Like any construction product, natural stone requires some controls to ensure their qualities.
In this sense and, since 2003, manufacturers of natural stone products are required to perform a number of checks of production, linked to obtain the required CE marking.
That is why manufacturers should implement a quality assurance system in the factory, consisting, briefly, in a series of laboratory tests for knowledge of the physical and mechanical properties of the material and on the other hand, dimensionally and visually monitor their production . All this holding on to the UNE-EN European apply to each product.
Currently, the products that the manufacturer must provide the obligatory CE MARKED are:
- Slabs for outdoor use, indoor and stairs.
-Setts for outdoor use.
-Kerbs for outdoor use.
-Tiles.
-Pieces for masonry.
This production control, should be developed so that, with some frequency, repeat the inspections and tests as set out in the UNE-EN harmonized.
This process occurs in two documents, the manufacturer must provide your customer, the Declaration of Conformity (document which states that a product complies with European regulations that applies) and CE identification label (document that must accompany the product in supply).