Waterproof Coating

NEW-THANSUNG SEAL 1K elastic urethane sealant

Expansion joints and cracks of concrete surfaces(non-exposure)

This paint is a 1K non-solvent type, elastic urethane sealant that is easy to use because it does not require a mixing process of the base and the hardener, and can prevent defects such as drying defects. In particular, it is excellent in physical performance in terms of adhesion and impact resistance, and it is easy to work on vertical walls due to its excellent thixotropy. It is effective for repairing rooftops, expansion joints and cracks because there is little volume reduction after drying. It also has an excellent paint-ability compared to the sealants of other materials.


Paint type
Polyurethane resin(1-Component)
Drying time
Drying time
Category 5℃ 20℃ 30℃
Set-to-touch 24 hours 12 hours 8 hours
Pot life - - -
Not Applicable
Specific gravity
Approx. 1.41
Dilution ratio
▷No dilution
Theoretical Coverage
See the amount used above
Solid volume ratio
98±1 %
Green, gray
Thickness of dried film
See the amount used above
Flash point
Shelf life
6 months
Packaging unit
300 ml(cartridge)


Slump (length)
Less than 3 ㎜
Slump (width)
Less than 3 ㎜
shore A 20 ± 10

how to use

Surface treatment
1. Cure concrete for at least 28 days at a temperature of 21℃ and a relative humidity of 50%.
2. Completely remove the oil, moisture, sand, dust, laitance and other foreign matter from the surface and maintain surface smoothness.
3. For high-strength concrete (260㎏/㎠ or higher), blasting treatment should be carried out.
Coating method
1. Fill the undercoated surface with the sealant using rubber scraper, etc. after inserting a back-up material.
2. Upon rooftop expansion joint construction, prevent contamination and damage around the building by attaching masking tape.
3. Repair coating for cracks is the same as general putty application.
Appropriate construction specifications
▷Primer : CLEANTHANE 1000
▷Urethane sealant : NEW-THANSUNG SEAL 1K
▷Follow-up intermediate coating : Elastic urethane system
Coating conditions
1. Atmosphere Temperature: 5~35℃, Surface Temperature: 40℃ or below, Relative Humidity: 80% or less.
2. Moisture content in the concrete: 6% or less.

Amount used

Joint size
(Area X Area, ㎜)




Filling distance
(based on 1LT, m)