Comparing Polyprufe to other Waterproofing Coatings and Linings

Polyurea Vs Polyurethane

Polyurea is closely related to polyurethane. Both are two component systems made with Isocyanate-based materials. However, while the second component in polyurethane is polyol resin, the second component in Polyurea is a polyether amine. In terms of performance, conventional polyurethane require a catalyst, which is sensitive to temperature and moisture. Low temperatures can slow the reaction and moisture can interfere with the reaction causing blistering and other negative effects. Polyurea, on the other hand does not require a catalyst. Reactivity for these coatings is fast, typically 3-10 seconds. Consequently they are able to cure at temperatures as low as -20 C and in the presence of moisture.

Polyurea Vs Epoxy

All epoxies require a catalyst. They are sensitive to temperature, humidity and moisture, giving them a narrow window for application. Epoxies genrally have extensive cure time, requiring more downtime and greatly increasing the time required for multiple coats. Unlike Polyurea, epoxy coatings offer little or no elongation properties - this leads to frequent failure of the coating with expansion or movement of the substrate.

Polyurea Vs cementitious

There are a number of cementitious coatings available. They are mostly trowel or brush applied although some can be sprayed. Some claim a degree of flexibility, but cannot provide the flexibility or elastic properties of Polyurea. All cementitious coatings have a long setting and then curing times. Cement based screeds can be made waterproof with additives such as SBR but they are then expensive and have long drying times.

Asphalt and Bitumen Vs Polyurea

Unlike Polyurea, Aspalt and bitumen systems either require hot works or are multi layered. They require a longer period of time to lay and do not have the durability of Polyureas. Polyprufe is a seamless membrane that can be handled and walked on within 10-12 seconds of application from the time it is sprayed.

Polyurea Vs Methyl Methacrylate

Polyprufe is far more durable than Methyl Methacrylate, has less odour is more resistant to impact and abrasion.