The diagram below illustrates the European (EN) and International (ISO) standards which are either approved or in the process of technical definition (“projects”) and which are applicable to glass blocks for walls and floors:

UNI-EN 1051-1 (referring to the Italian standards)
Approved and published standard
The purpose of this standard is to define the maximum allowed size variation, the shape and the technical features of the materials used for the production of glass blocks for walls and floors.

ISO TC 160/SG1
Approved standard
This is the international standard that adopts the contents of  EN 1051-1.
It is only valid as a recommendation unless explicitly referred to in state legislation, in which case it takes on the force of a binding obligation.

EN 1051-2
Approved standard and in publishing
Its objective is to define the production standards for glass blocks. This standard has already been approved by the various national certification bodies of EU Member States (UNI for Italy) and once published it will become “binding” and the blocks will bear the CE mark.
The publication is due within the end of 2007 / first half of 2008.

SEVES TECHNICAL AND SALES DEPARTMENTS ARE IN ANY CASE ALWAYS AVAILABLE FOR ASSISTING  THEIR CUSTOMERS BY PROVIDING ALL THAT IS NECESSARY TO ENSURE CORRECT DESIGN AND INSTALLATION OF THEIR GLASS BLOCKS.

Tel. +39 055 44951