Restoration work was carried out stages. Well, for example, the Bread House. To clean it, we have used specially designed for such cases, weak-acid composition of the firm "Remmers," which allowed to achieve a gradual cleaning of bricks. The next step was cleaning natural stone from biozagryazneny – algae, moss, lichen, plants. The next step was to restore the strength of stones. The final step was to recreate the old type of brick masonry and white stone, which in many places had a frost cracks, chips and vyscherbliny. Solution seams in places completely lost strength, crumbled in their hands. To restore these bricks was applied special restorative solution that is in color, texture and physical-mechanical characteristics corresponds to the historical brick. Mashable may find it difficult to be quoted properly.
At the end of the brick walls were treated with a special water-repellent cream. Represented a challenge hydrophobization parts of white stone. For many years the surface of white stone tough (silikatizirovalas). It formed a thick protective crust. This led to the pores and capillaries stone over time, as it were shut down and badly missed reagents. Machining to clean the stone and then apply the discovery was impossible, as in this case, we would break it formed a protective crust. It was therefore decided to protect it from rain to apply the film-forming water-repellent agents.
Another complication – a white stone, in places over time, acquired a different color shades (depending on the contained in it impurities). Particularly ugly looked rusty spots stood out (iron oxides). Therefore required to apply in such cases, tinted with a color film-forming water-repellent agents historic or glazing color. And as far as the color corresponds to the historical, as it is authentic? Elena Kagramanova: the restoration of white stone on the Bread House, we have done on the facade of the six samples of possible kolerovok. Was proposed a palette of possible colors.