UZIN NC 890 HYDROPATCH Premium Pro – Moisture Resistant Skim and Repair Compound

High-performance portland-based fine smoothing compound

Formulated primarily to repair concrete substrates with up to 100% RH to fulfill today's higher moisture-resistant adhesive and floor covering requirements. UZIN NC 890 HYDROPATCH is also recommended to fill joints, cracks, and localized repair areas before using UZIN PE 460 and UZIN PE 414 TURBO moisture vapor retarder coatings. Mixed with water, this polymer-modified compound of portland and select hydraulic cement can be applied to various surfaces, often without the requirement of a primer. Suitable for use with all floor coverings and adhesives.


  • Interior use only
  • Use over concrete up to 100% RH 
  • Use over cement-based leveling compounds
  • Use over wood, plywood, OSB, and underlayment panels
  • Use over well bonded adhesive residues including cutback adhesive*
  • Use over quarry tile, natural stone, terrazzo
  • Use beneath UZIN PE 460 and UZIN PE 414 TURBO
  • Use over ceramic tile, dense and smooth coatings, metal
  • Residential and commercial applications
  • Use with radiant floor heating systems

*See; “Substrate Preparation” for additional information.


  • Polymer-modified • Enhanced bond and durability
  • Retains mix water • Superior skimcoat application 
  • Moisture resistant • For high moisture areas <100% RH
  • High strength • Suitable for caster wheels 

Technical data

*At 70 °F (21 °C) and 50% relative humidity. Surface profile and porosity, application depth, temperature, and humidity will affect dry time and coverage. ** In original unopened packaging, when stored indoors in dry, moderate conditions between temperatures of 50F - 90F (10C - 32C).

10 lb. (4.5 kg) foil bag


up to 9 months**

Mixing ratio

0.87–0.92 quarts per 5 lb. (half bag) (0.83–0.87 liters per 2.25 kg-half bag)

Water quantity

1.75-1.85 quarts per 10 lb. bag (1.67-1.75 liters per 4.5 kg bag)




100-250 sq. ft. as a skimcoat (10 lb.)* 9.29-23 m² as a skimcoat (10 lb.)*
up to 28 sq. ft. per bag at 1/8" (10 lb.)* up to 2.6 m² at 3 mm (10 lb.)*


0 g/L

Working time

15 minutes*

Ready for foot traffic

30-60 minutes*

Ready for covering

30-120 minutes*
16 hours for wood flooring*

Minimum application temperature

50 °F (10 °C) at floor level


compressive: 3,000 psi @ 28 days. ASTM C109 | air and water cure

Ordering information

Packsize Shipping unit
159352 10 lb (4.5 kg) foil bag
Box :
Pallet :

Quality seals and badges

SCS_IAQ_IAG[Building Materials]_1CG

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