Waterproof Coating

Q-fit SG-1000 Asphalt shingle waterproofing primer

Primer for asphalt shingle roofs

Q-fit SG-1000 is a clear primer for asphalt shingle roofs, which is made by adding a special synthetic resin emulsion and a surfactant. It is an primer for the aged part of asphalt shingles that is thinly applied to enhance the adhesion to Q-fit SG-3000, which is a subsequent coating material, durability, alkali resistance and weather resistance as well as to prevent whitening and strengthen the surface of the basis material.


Paint type
Modified acrylic emulsion
Drying time
Drying time
5℃ 20℃ 30℃
Set-to-touch 30 minutes 20 minutes 10 minutes
Dry-through 8 hours 5 hours 4 hours
Time required for re-coating (min.) 6 hours 5 hours 3 hours
Tap water(dilution rate: up to 100%, volume ratio)(depending on the basis material and purpose)
Coating Method
Brush, roller, spray coating.
Specific gravity
Approx. 1.0
Solid volume ratio
Approx. 17%
Theoretical Coverage
9~13 ㎡/ℓ/1time ※ The application amount may vary depending on the absorption and the degree of porosity of the basis material.
Thickness of dried film
Re-coating interval
20℃, sufficient ventilation for a minimum of 5 hours
Storage and preservation
12 months (well-ventilated dry, cold and dark location, room temperature 5℃~30℃, humidity less than 80%)


Excellent surface strengthening
Improvement of adhesion of the top coat, durability, alkali resistance, and weather resistance.
Excellent economic feasibility
Reduction of top coat

how to use

Surface treatment
1. The substrate should keep surface smoothness and be sufficiently dried.
2. Oil, dust and other impurities adhering to the surface should be completely removed.
Coating method
1. Uniformly and thinly apply in the same direction with a brush or roller based on the above specifications. If necessary, apply after properly diluting with water so that the coating is not too thick.
2. Upon roller coating, use an oil roller with short hairs.
Appropriate construction specifications
▷Waterproof : Q-fit SG-3000