FIELD: surface treatment of various materials. SUBSTANCE: water-repellent composition comprises product of interaction of polyorganohydride siloxane and hydrolyzate of alkoxy silane being prepared at their mass ratio (11-26): (31-91) and water which is used as a solvent. Quantity of water is 500-11000 mass parts per 100 mass parts of mentioned above product. Water absorption of brick and wood being treated by proposed composition and sustaining within 24 h is 1-4 % and 4-18 % respectively, as calculated for their weight. EFFECT: improved quality of desired product. 2 tbl
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