Fast Curing Polyurea Based Waterproofing and Protective Coating


Polythane PR is a two component fast curing aromatic polyurea based elastomeric waterproofing coating system for concrete and metal surfaces and polyurethane foams. Free from solvents, the product is a 100% solid low VOC coating., which is applied by a high pressure spray plural component pump. Polythane PR can be applied in a single or multiple layers in thicknesses ranging from 250 microns to 2.5mm on vertical surfaces without sagging.


  • Fast curing time. Quick turnaround time for subsequent site works.
  • Moisture and temperature insensitive. Reactive even at 0°C.
  • Low VOC. Odourless.
  • Tough and durable seamless and monolithic surface
  • High resistance to abrasion, puncture, impact and thermal shocks
  • High resistance to chemicals
  • Excellent low temperature flexibility and crack bridging ability.
  • Low permeability. Highly durable and sustainable.
  • Non Toxic- Can be used in potable water applications.

This TDS is applicable for the United Arab Emirates only. Please contact your local Polybit sales office for the available TDS in your region

Step by Step

Substrate preparation

A proper substrate preparation is required to be done prior to applying the coating:


Clean the surface thoroughly of all contaminants. Suitable blasting method can be used as per the guidelines specified in ASTM D4259 for surface cleaning. Cracks and potholes shall be repaired with a suitable product from the Polycrete* concrete repair system.


Metal surfaces shall be grit blasted to a bright finish meeting the requirements of SA2½.


Prime the prepared surface with Polyprime PU* @ 4-5m²/L and allow it to dry completely before the application of the polyurea coating.For damp substrates, apply Polyprime R* as primer @4-5m²/L


Polythane PR application shall be done using a high pressure plural spray equipment. Technical Specification (Proportioning Unit)

Output capacity >7.5 lt/minute

Operating/Static Pressure > 2500 psi

Spray pressure at Gun >2300 psi

Primary heating 70°C – 80°C

Hose heating 70°C – 80°C

Volume ratio of mix 1:1

Application temperature 80°C

Application pressure 150 – 180 bar


The coating should not be diluted with any solvent under any circumstances. Use Polyfoam Cleaner for purge line and flushing of the spray equipments prior to application to remove all impurities. Spray the coating as evenly as possible. It can be applied from 250 microns to 2.5mm in multiple passes without any considerable sag on vertical surfaces.


The applied coating shall be protected by Protection Boards (Bituboard/Bitustick R400)*, in case if backfilling is required.


  1. The coating should not be applied directly on wet or damp substrates.
  2. Outdoor application should be avoided during extreme climatic conditions.                      

Note: For permanent exposure to UV, it is recommended to apply Polypur TC20* over the Polythane PR coating.