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Product overview


Dayu®One-component polyurethane coating is a reactive moisture-curing film-forming polymer waterproof coating made of isocyanate and polyether as the main raw materials, adding a variety of additives and fillers.

Through the polyurethane prepolymer-NCO (terminal amino) and moisture in the air for chemical reaction, in the base surface to form a tough, soft, seamless rubber waterproof coating.




Product Features


L single component, that is, ready to use, convenient construction.

l Good bonding performance, high tensile strength, high elongation, good elasticity, good resistance to high and low temperature performance.

l The film is dense, no pinhole bubbles *, no seams, waterproof and anti-permeability.

l Good sealing performance, especially suitable for special-shaped structure waterproof, such as pipe root, floor drain, gutter, tiger window and other node processing.

L environmental protection non-toxic, can be used indoors.

* Can be achieved under qualified base and strict process conditions.





Specification classification



Single component (S)


Type I/Type II/Type III




Scope of application


l It is suitable for industrial, civil, municipal and other construction projects, including administrative, residential, commercial, scientific research, medical, school, grain depot, pipe gallery and other buildings.

l Suitable for building basement, roof, toilet bath, swimming pool and other waterproof parts.

l It is only used for waterproofing the facing water surface of the fortified part.




Construction process


L grass-roots requirements: solid, dry, clean, free of sediment, laitance, no empty drum, loose, sand and other phenomena, yin and yang angle should be rammed arc angle.

l Coating methods: scraping (scraper), rolling (wool roller), spraying (matching spraying equipment).

L primer: depending on the ambient temperature, add appropriate amount of compatible solvent * to adjust the diluted coating, and evenly apply thin coating * to the base layer.

* Solvent type: non-alcoholic unleaded gasoline, acetone, naphthenic oil, other solvents should be tested.

* Incorporation ratio: 10% ~ 30%.

 *Thin coating: thickness should not exceed 0.3mm.

L surface coating: multi-layer thin coating film, each coating direction is perpendicular to each other,The secondary road should be applied after the front road is completely dry (not sticky).

Each thickness: not more than 0.5mm, according to the design thickness to determine the number of brushing.
Reference dosage: 1.5~1.8kg/㎡ · mm.

Consistency adjustment: if the consistency is high and the construction is inconvenient, add the above matching solvent, which should not exceed 5% of the amount of ingredients.
Strengthening treatment: Yin and Yang angle, node can be placed in the process of brushing alkali-resistant glass fiber mesh cloth, and in the appropriate thick coating.

L optional anti-aircraft drum measures: nail and hang steel wire mesh, wipe interface adhesive, and sand spreading on surface layer (priority is given in order).




performance index


Products in accordance with the national standard "polyurethane waterproof coating" GB/T19250-2013 production and manufacturing.

The performance indicators meet the requirements of Class S in the standard.


Part of the physical performance indicators at a glance:


Indicator (Type I)

Indicator (Type II)

Indicator (Type III)

Solid content




Table dry time

≤ 12h

≤ 12h

≤ 12h

Done time

≤ 24h

≤ 24h

≤ 24h

Tensile strength

≥ 2.00 MPa

≥ 6.00 MPa

≥ 12.0 MPa

Elongation at break

≥ 500%

≥ 450%

≥ 250%

Tear strength

≥15 n/mm

≥30 n/mm

≥40 n/mm

Low temperature bending

-35 ℃, no crack

-35 ℃, no crack

-35 ℃, no crack

impervious to water


impervious to water


impervious to water


impervious to water

bond strength

≥ 1.0MPa

≥ 1.0MPa

≥ 1.0MPa


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