Restoration plaster system for masonry work damaged by damp and salt without additional waterproofing measures

Salts located within masonry work act hygroscopically and migrate to the surface, where lower moisture content and good crystallization conditions exist at the evaporation zone. This leads to destruction of the render/plaster surface.

Brush apply one or two coats of ESCO-FLUAT to saturation to the exposed masonry work (dependent on the degree of salting and the porosity of the substrate). The structurally damaging salts are converted to sparingly soluble salts and cannot be transferred to the new, freshly applied render/plaster coat.

Apply THERMOPAL-SP pre-blended mortar as a half-cover base coat (ca. 50% coverage) in accordance with rendering/plastering technical rules to a thickness of maximum 5 mm. As required, lightly dampen the surface in order to guarantee a good bond.

With large irregularites, apply THERMOPAL-GP11 in thicknesses from 10 – 30 mm (use multiple layers for greater thicknesses). Strike off the previous layer with a lath and immediately after stiffening, roughen up horizontally and allow to dry.

Apply one coat of THERMOPAL-ULTRA-white to a maximum of 3 cm. Allow to stand for an adequate length of time, then rub down the surface or use a grid float.

Apply THERMOPAL-FS33 mineral-based fine mortar by trowel to the required thickness up to maximum 3 mm. Once dried, rub down the surface with sponge rubber or a felt/sponge board.