The moisture of the concrete subbase must be measured using a “carbide hygrometer” as specified in UNI 10329 standards. According to UNI
11371:2010 standards a traditional concrete subbase must have a value equal to or lower than 2,0% by weight whereas an anhydrite screed must have a value equal to or lower than 0,5%. For installation on “radiant” screed the traditional concrete subbase must have a value equal to or lower than 1,7% by weight whereas an anhydrite screed must have a value equal to or lower than 0,2%. Wood boards can be installed according to the technique specified. Flooring that is glued in place must use exclusively two-part adhesives or the equivalent. For floating installation it is necessary to use vinyl glue in the joints. Always leave at least 8/10 mm of space between perimeter walls and the flooring. This gap will subsequently be covered by a suitable thick skirting board. Any glue leaks out must be immediately cleaned while it is “fresh” without using alcohol, solvents or other thinners. If it is necessary to use a “cleaner” then use only neutral and not aggressive products to avoid damage to the finish. We highly recommend you perform test on uninstalled samples to make sure the product does not damage their surface. Installation on “radiant” screed, which is only for the types of wood specified, may only be done if the screed has been mede as specified in UNI EN 1264-4 standards and after having performed at least one heating cicle (2 cycles would be better) and checked to make sure the heating/cooling system operates properly. It is always best, even for formats where both floating and glued installation are to be used, to glue the material in order to achieve better stability and heat transmission. It is necessary to use a specific “thermo foam” layer when floating installation is used (when possible). Start the heating system gradually the first time heating begins during the winter season. The temperature of 67