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High Heat Paint Canada

high heat paint against the temperature of the flames

High heat paint for protection from high temperatures

When a substrate is subject to heat and rapid, extreme temperature fluctuations, it can lead to surface breakage, coating failure and corrosion. Electrical and engine components, chimneys and ovens, pipework and chemical plants, all these are exposed to possibly damaging temperatures and conditions. A high heat paint (or thermal management coating) works to protect the substrate from fluctuation and extremes of temperature without losing functionality. As well as protecting from heat, these coatings:

  • Reduce thermal fatigue: improve performance of machinery and extend part life
  • Allow for higher operating temperatures while limiting thermal exposure
  • Effective temperature range up to 1000°C: Different formulations provide resistance to heat from -196°C (-272°F) to 1000°C (1832°F)
  • Abrasion resistant: Suitable for harsh environments
  • Protect from corrosion under insulation (CUI): Provides an extra layer of protection between the hot surface and insulation

In this article we look at the different categories of high heat paint, how to choose the right one for your project, and where to find products and contractors in Canada.

The 4 types of heat resistant paint and coatings

It is important to note that while high temperature paints do provide some protection from flames, they are not fire resistant paints. Essentially, high temperature paints can be divided into four types:

1. Epoxy-based, silicone-based, multi-polymeric paints – Single or two component, water- or solvent-based, these paints are formulated to provide resistance to high heat when applied at new construction, on-site and as a maintenance coating. Usually the more silicone, the higher the temperature resistance. For medium to high temperature protection. Liquid paints have the benefit of being able to be applied to hot substrates without affecting the coating.

2. Ceramic coating – The heat resistance properties of ceramic coating are well known, and some of the highest heat paints available are ceramics. They also provide corrosion protection and chemical resistance and a hard, durable finish.

3. Powder coating – As well as being corrosion resistant, high temperature powder coatings have been developed for heat resistance to temperatures ranging from 200°C (392°F) to 550°C (1022°F). The powders are usually epoxy or silicone-based (like the liquid paints), and silicone-based powders perform better at higher temperatures. These have the benefit of being VOC free and having a wide range of available gloss and colour finishes.

4. Sprayed metal and metal additive coatings – These coatings are particularly used for corrosion protection combined with heat resistance. Thermal sprayed aluminium is particularly used for CUI prevention in onshore and offshore platforms and processing plants. Metal pigments are often used as stabilisers for temperatures above 400°C (752°F).

How to choose a temperature resistant paint

As with any coating application, understanding the needs of your substrate and the application process is crucial for making the right coating choice. As well as knowing the substrate type, you need to know its environment, its use, the coating time parameters, and the likely ways it will fail. Here are some questions you need to ask before you can choose a high heat paint:

  • Maximum temperature of the substrate:
    One of the most common reasons for failure is expecting these coatings to perform outside of the temperature range they were manufactured to tolerate. Each coating type has a specific temperature range, and outside it the functionality and efficacy fails. Make sure not to understate the maximum temperature.
    For example, International Intertherm 50 is recommended for temperatures up to 540°C (1004°F).
  • Insulation of the substrate:
    If you are choosing a coating to combat CUI, that coating needs to be specially formulated for the purpose. It needs corrosion resistance, but it also needs to be able to be applied to hot substrates and deal with boiling water exposure.
    For example, PPG HI-TEMP 1027 is designed to prevent CUI and can be applied to hot substrates
  • Substrate temperature during application:
    There are high heat paints formulated for hot (up to 300oC (572°F)) and room temperature application. A hot application may be required to avoid downtime, spot coating problem areas, and generally not disrupting a facility.
    For example, Jotun Epoxy HR can be applied on substrates up to 150oC (302°F)

Heat resistant paint for metal combats CUI

Insulating metal structures is very common in industrial environments; it can minimise heat gain or heat loss, reduces costs, improves efficiency, and increases staff safety. The problem starts when water penetrates the insulation, collecting in the space between the insulation and the metal. When this happens it is the perfect environment for corrosion. The trapped moisture has the potential to cause rapid rusting and corrosion on the surface of the steel, below the insulation layer.

CUI is particularly insidious as it can go undetected under insulation until the problem is severe. If it remains undetected, it can lead to shutdown of an entire facility, or even safety incidents. This is why a heat resistant paint for metal is so important – it can coat the steel or other metal surface and protect it from the hazard of corrosion under insulation.

high heat paint on bbq grill

High heat paint is applicable from heavy industrial machinery to home barbeques grills.

Local High temperature paint manufacturers & specialists

High temperature paints are used across a wide range of industries, as well as by homeowners and barbecue enthusiasts. As such, a wide range of products and services are available across the country, no matter your project. Below is a table outlining just a few of the products and their costs, as an indication. high heat paints should be applied by a trained professional. If you would like more information about heat resistant paints, or would like to connect with one of our partners to coat your project, contact us! Our experts are happy to help, just use the “request a quote” button below the article and make use of our 100% free quote service.

For information on where to find high temperature powder coating, please visit our powder coating services page.

High Heat paint productPricePackagingApplications
Tremclad High Heat Enamel$11.99340gbarbecues, wood burning stoves, radiators, engines and other metal items
Rust-Oleum Auto High Heat Pain$11.97340gmetal surfaces
POR15 High Temperature Paint$265.001 Gallonmetal surfaces
Dupli Color High Heat Calliper Paint$17.99312gbrake calipers, rotors, and drums
VHT FlameProof Coating 1300-2000°F$17.99312gexhaust systems, and the aerospace industry for jet engines, re-entry vehicles

 

 


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