FIELD: protective coatings. SUBSTANCE: method includes application onto damaged region of repairing composition containing 91-97 wt % liquid glass or oil paint, and 3-9 wt % aluminium powder, microarc treatment with industrial-frequency alternating current at anode current density 35-40 A/sq.dm in alkaline electrolyte composed of (in g/l) 3.0 potassium hydroxide, 3.0 liquid glass, 3.0 sodium aluminate, and water up to 1. EFFECT: improved procedure. 2 cl, 3 tbl
