Overview
PURA4421 is a fast setting, hand-applied two-component pure polyurea coating. It is 100% solids and contains no VOCs. It has been developed as a high strength rigid material for use as a coating onto prepared concrete. It is applied by squeegee or trowel. The product benefits from fast film build-up and quick cure times. Typical applications include waterproofing of roofs and balconies, where high abrasion resistance, flexibility and durability are required. The cross-linked properties of PURA4421 gives excellent resistance against a variety of chemicals such as acids and alkalis.
Applications
- Roof Waterproofing
- Balcony Waterproofing
- Concrete Protection
- Equine Stables
- Equine Walkways
See all applications in our Technical Data Sheet
See all applications in our Technical Data Sheet
How to use
- Surface Preparation
Ensure the surface is prepared according to Leeson Polyurethanes Method Statement.
- Priming
The use of E4568 Epoxy primer or PU3922 polyurethane primer, blinded with sand, is required for use with this membrane.
- Mixing
Ensure that both components are mixed well before pouring the Polyol component into the NCO component. The two components should be mixed together in the NCO pail for 1 minute using a high torque helical blade mixer ensuring a homogeneous colour is achieved.
- Application
The PURA4421 should be poured immediately onto the surface. The product should then be pushed out, using a squeegee, to the required thickness.
It is recommended that the product is applied at temperatures greater than 10°C - Curing
PURA4421 should be allowed to cure for a minimum 2 hours at 20°C and a maximum 24 hours at 20°C prior to overcoating. The cure time will be extended at low temperatures.
