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Hydropatch – Plastic cement CR-225

The CR225 is a specially developed plastic cement for underwater application on completely soggy surfaces. This product is ideal for sealing leaks on roofs, on foundations and even in outdoor basins (except those of drinking water). It forms a durable, waterproof, flexible coating and applies well under all conditions.

Would you buy this product?



  • Outstanding adhesion under water
  • Ideal for urgent repairs
  • Water repellent
  • Flexible at low temperature
  • Good UV resistance




Repair / Seal

Building components

Roofing / Foundation


Asphalt shingles / Concrete / Metal / Wood

Covering rate

0,32 m2/kg applied 3 mm thick (1,56 ft2/lbs applied 1/8" thick)



Preparation / Application

Application temperature

Any temperature but it is easier to apply the product when it is temperate.

Service temperature

-40°C to 85°C

Application tools

Trowel / Putty knife / Glove

Surface preparation

Surfaces must be clean and free of dust, dirt or other contaminants.


During colder periods, keep the product in a temperate place to facilitate its application. Do not apply if rain is expected. To repair joints and cracks, firmly apply enough product in depth to fill all the cavities and close the gaps. The application should be thin, uniform and the repair should extend about 150mm around the broken area. Apply the product in a slight excess above the surface to avoid water accumulation. Close the container after each use.


Allow about 4h for surface drying and about 48h for complete drying. The drying time depends on the application method, the ambient temperature, the surface and the thickness applied.

Caution / Cleaning / Storage

Restriction / Caution

Keep out of the reach of children. If the product is applied near a ventilation or air conditioning unit, take the necessary precautions to prevent infiltration of solvent odours toward the inside. Keep open container or freshly applied product away from open flames, sparks or other sources of heat. For outdoor use only.


Mineral spirits


The product may be kept in its original sealed container up to 12 months after the date of purchase by the user.

Available format

310ml / 4kg / 20kg


5 years limited warranty when installed and / or applied as recommended by the manufacturer. We will replace the product with a manufacturing defect. Under no circumstances will the manufacturer be liable for any amount exceeding the purchase price of the product used. The consumer must ensure that this product is suitable for the intended use. Because of atmospheric conditions, applicator competence and surface conditions being independent of the manufacturer’s control, we limit our liability for one year following the date of purchase, with proof of purchase, to replacement of defective material only in its original hermetic container. Port paid factory (FAB factory).