PUR 420 is a two component modified pure polyurea coating system with very fast setting, rapid curing and flexible properties. It provides seamless and long term durable waterproofing and floor coating. It is applied at high pressure with heated multi-component spraying equipment.
Preparation of Substrate
All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum. Weak concrete must be removed and surface
defects such as voids must be fully exposed. Repairs to the substrate, filling of blowholes/voids
and surface leveling must be carried out using appropriate products. Surface should be primed with proper primer.
Application Method
A and B component must be stirred with using a barrel mixer until getting homogenous mixture and color obtained. A and B component must be applied by using a two components high pressure and heat spray machine. The application temperature should be between 70-80oC, and the application pressure should be between 120 and 200 bar.
Mixing ratio: A Component: 220 / B Component: 200
Process temperature: A Component: 70-80°C / B Component: 70-80°C
Process pressure: 120-200 bar
For 1 mm thickness polyurea coating 1,1-1,2 kg/m2 . Recommended film thickness is minimum 2 mm.
A component: 220 kg barrel – B component: 200 kg barrel