The invention discloses a
metal roof rustproof waterproof repairing paste, which comprises, by weight, 65-70 parts of water, 2.0-4.0 parts of an aqueous
pigment dispersing agent, 8-18 parts of ash
calcium powder, 8-18 parts of
titanium dioxide, 60-90 parts of
zinc phosphate, 25-50 parts of aluminum tripolyphosphate, 450-600 parts of an
emulsion, 250-350 parts of heavy
calcium powder, 5.5-8.5 partsof anti-flashrust aid, 3.0-5.0 parts of a
defoamer, 2.0-3.5 parts of an anticorrosion agent, and 4.0-6.0 parts of a rheological aid. According to the present invention, the
metal roof rustproof waterproof repairing paste can form the firm
protection layer using
iron phosphate as the main body, and the
protection layer is densely passivated and insoluble in water so as to provide good anti-
rust effect; and the
emulsion has advantages of good elasticity, good flexibility and good
weather resistance, cannot subjected to
thermal expansion and cold contraction, can
resist crack, and can form the dense hydrophobic film during the
drying so as to provide good waterproof effect.