Polyurea
A spray-applied elastomeric coating produced by reacting two components at high temperature and pressure. It gels within seconds and builds 1.5 to 3 mm in a single seamless pass.
On an actual building
Speed and seamlessness are what it is bought for — return to service within hours, and no laps on complex geometry. Its performance depends almost entirely on preparation and primer, not on the polyurea itself.
What we most often have to correct
That its toughness compensates for a poor substrate. It is one of the least forgiving systems available for contamination and moisture.
Terms that come up alongside this one
- Primer
A preparatory coat applied to a substrate to seal it, improve adhesion and provide a compatible surface for the system that follows..
- Dry Film Thickness (DFT)
The thickness of a coating after it has cured, measured with a gauge across a grid of points..
- Adhesion Pull-Off Test
A test in which a dolly is bonded to the coating and pulled off under measured force, recording both the load and where the failure occurred..
Polyurea — questions we get asked
What does polyurea mean in waterproofing?
A spray-applied elastomeric coating produced by reacting two components at high temperature and pressure. It gels within seconds and builds 1.5 to 3 mm in a single seamless pass.
Why does polyurea matter on a real project?
Speed and seamlessness are what it is bought for — return to service within hours, and no laps on complex geometry. Its performance depends almost entirely on preparation and primer, not on the polyurea itself.
What do people commonly get wrong about polyurea?
That its toughness compensates for a poor substrate. It is one of the least forgiving systems available for contamination and moisture.
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