The article presents the results of a priori estimation and experimental confirmation of the possibility of obtaining unfritted low-baked glazes for majolica based on low-alkali glass NS-3 and poorly soluble complex boron-containing materials - ulexite and colemanite. The main conditions are formulated that determine the algorithm for modeling the composition of unfritted glazes, ranked by their specific influence on the final physicochemical properties of the glaze coating formed during firing: reduced compared to the shard, low melting point and high glass transition speed, compatibility of the thermal coefficients of linear expansion of the glassy coating and shard , high chemical stability of the formed glassy coating in relation to various reagents, application as yrevyh materials poorly soluble substances. The studies are carried out in two-component systems "NG-3 glass - ulexite" and "NG-3 glass - colemanite", in which the role of the matrix is played by low-alkali chemically stable glass NG-3, and ulexite and colemanite - modifiers of its composition, which contribute to lowering the transition temperature in a plastic state in which glazing of the surface of a ceramic crock is possible. The results of experimental studies confirms the possibility of obtaining glazes in the considered two-component systems. The possibility of obtaining transparent coating glazes in the NG-3 - ulexite glass system and opaque "muffled" glazes in the NG-3 - colemanite glass system is established.