Polyurea coating for heavy duty protection
Polyurea coating has been on the Canadian market since the 1980’s, but its durability, flexibility, and versatility means that new polyurea applications for are being found all the time. It is currently used across industries for waterproofing, corrosion prevention, water containment as well as containment of chemical and toxic substances, flooring, and mechanical equipment, just to name a few. Polyurea coating is also flexible with substrates, and is applicable on concrete, metals, wood, plaster, plastics, and many more.
A polyurea coating is the result of a reaction between an isocyanate and a resin blend, which forms a plastic- or rubber-like compound. This elastomer can be used in similar ways to other similar technologies such as polyurethane and epoxy, but the protection it provides combines the best aspects of both these coatings. Polyurea is used for everything from mining equipment and pipeline coating to playground fixtures, waterproof tank linings, asbestos encapsulation, and more.
In this article we will outline the benefits and uses of polyurea coating, as well as help you find polyurea coating suppliers and manufacturers for your project in Canada.
The 5 reasons to choose a polyurea coating
Polyurea is a coating of choice for commercial, industrial, marine, and residential applications because it has many advantages over its alternatives. The alternatives also have some of these advantages but polyurea has them all in one coating. These include:
- Waterproof and corrosion protection: Polyurea coatings have moisture insensitivity/resistance. They have low permeability and are also resilient to water, providing corrosion protection. Therefore, they are also used as tank linings.
- 100% solids: With a 1:1 volume ratio, the need for extra coats is eliminated, and the lack of solvents means it also VOC free and environmentally friendly.
- High resistance: A polyurea coating provides chemical, abrasion, and UV resistance, as well as being able to withstand extreme temperature changes.
- Fast set and fast return to service: A curing time of seconds or minutes means there is an almost immediate return-to-service time, and downtime is many times less than with another paint.
- Strength and flexibility: Polyurea has a high polymeric elongation meaning that it stretches as well as resists punctures and tears.
How polyurea coating compares to other coatings
Why would you choose polyurea coating instead of a more traditional coating like epoxy? While other coatings have their own benefits, polyurea outperforms them in certain areas.
- Polyurea vs. Polyurethane:
Though these coatings are related (both isocyanate-based), they have many differences. When being applied polyurethane based coatings are sensitive to temperature and moisture, where polyurea is not. Polyurea is elastic and can stretch, but polyurethane cannot. It also has a higher tensile strength.
- Polyurea vs. Epoxy:
Epoxies are sensitive to temperature, humidity and moisture during application, with longer cure times than polyurea. Epoxy coatings are not flexible with the expansion of a substrate, and UV radiation will cause it to discolour, unlike polyurea.
- Polyurea vs. Cementitious:
Unsurprisingly, cementitious coatings provide little give, and have far longer setting times than polyurea. All cementitious coatings have long setting and curing times.
In short, choose a polyurea coating when you require a very fast turn around in application, as well as when the application environment is moisture-laden, humid, below freezing, or hot. Polyurea is also preferable when you need a coating that can flex with the expansion of a substrate, or want a super hard-wearing level of abrasion resistance.
Polyurea hotspray application methods and tools
“Hotspray” is another name for the polyurea spraying process, because polyurea coating is most effective when heated to 60-70°C. The reaction that creates a polyurea coating is immediate, and it starts to cure in seconds. So, in order to achieve the heat and speed requirements, the two components are pumped into a special spray gun through heated hoses. The components mix within the gun chamber where the reaction starts, the mixture then is sprayed immediately onto the substrate. This ensures the best performance from the coating, and the strongest physical properties. Polyurea hotspray coating is a precision business, and should be applied by trained, professional applicators.
As well as being suitable for application across many substrates, polyurea hotspray coating is suitable for application across a wide range of temperature and humidity environments. It is applicable in sub-zero temperatures, or on damp substrates without affecting its effectiveness. It can also be applied at any thickness, in a single coat application.
Polyurea Coating Canada – find local specialists
By investing in polyurea you are already saving money in the low downtime and return to service losses, the lifetime of the coating (up to 30 years warranty in some cases), and the speed of application, meaning fewer billable hours for the applicators. There are numerous polyurea specialists operating in Canada. If you would like any more information, or wish to be connected with one of our partners for your coating project, contact us! Our experts are here to help, just click on the “Request a quote” button at the bottom of this article and take advantage of our 100% free quote service.
|Polyurea coating contractor||Location||Served locations|
|Canadian Induracoat Corporation||Vancouver, British Columbia||Vancouver, Calgary, Victoria and surroundings|
|Spray Foam Canada||Calgary, Alberta||Nationwide|
|Ontario Protective Coatings||Ontario||Ontario|