Apart from the requirements traditionally defined in the building legislation the European Construction Products Directive (CPD) explicitly demands construction works to be built with construction products that meet the requirements on hygiene, health and environment in force in their place of use and not to endanger the health of the occupants and neighbours. However, at present only few Member States have quantitative requirements on the release of dangerous substances from construction products / construction works. Harmonised European products standards adopted so far include only general references to existing national requirements for dangerous substances.