METHOD FOR WATERPROOFING AND INSULATING HEAT OF ROOF SLAB USING INORGANIC COATING AGENT AND WATER-SOLUBLE ALKALI SILICATE

PURPOSE: A method of waterproofing and insulating heat of a roof slab is provided to prevent separation or exfoliation by increasing the surface rigidity of the concrete structure, to extend the life span by restricting lifting of the slab, and to reduce cost by insulating ultraviolet rays. CONSTITUTION: A slab is cleaned, and water-soluble alkali silicate is spread on the surface of the roof slab to form a lower primer layer. Bubbles and pinholes of the primer layer are checked, and ceramic powder is mixed with an inorganic elastic coating waterproofing agent. The two-liquid inorganic waterproof agent is spread on the primer layer to form a middle waterproof layer. Bubbles and pinholes of the middle waterproof layer are checked, and the inorganic coating agent including ceramic powder, the inorganic elastic coating waterproof agent and inorganic pigment is spread to form an upper finishing layer.