The components of the mix ARENA InMix PN which are deeply getting into capillary structure and a time of concrete fill them with connections, permanent to moisture, at the expense of what, we are capable to raise repeatedly indicators of water tightness and frost resistance of all types of concrete structures. The high-quality portlandtsement, certain fractions of quartz sand and a special complex of the soluble additives reacting with products of hydration of the cement which is contained in concrete products is a part of the getting waterproofing of ARENA InMix PN.