Non-shrinking waterproofing mix for seams of ARENA SeamMaster PT is an effective remedy for repair of cracks and sealing of all types of seams in designs from reinforced concrete. It is made in the form of the dry mix intended for a zatvoreniye by strictly dosed amount of water. The high-quality portlandtsement, small fractions of quartz sand, and a complex of the special additives responsible for shrinkage compensation, considerable improvement of adhesive and moisture protective properties of structure is a part of mix.