Quick answer
- Steel in power stations or process plants up to 200°C
- ColyHeatshield 920
- Exhausts, chimneys, flare stacks and hot pipework up to 600°C
- ColyHeatshield 960
- Commercial or industrial metal structures (200°C and 600°C grades)
- Heat Resistant Coating
Step 1: Measure the real temperature
Find out both the normal operating temperature and the peak temperature at the metal surface. Also note whether the heat is continuous or comes and goes. Choosing a grade that is too low can cause the coating to fail early.
Step 2: Pick the grade
- Up to 200°C: ColyHeatshield 920 is a single-component modified alkyd with leafing aluminium pigment. It is listed for power stations, petrochemical plants and offshore oil and gas facilities.
- Up to 600°C: ColyHeatshield 960 is a single-component silicone aluminium coating. It is listed for flare stacks, chimneys, exhausts, vents and pipework.
- For general commercial and industrial structures, Heat Resistant Coating is available in 200°C and 600°C grades.
Step 3: Plan the curing
Silicone high-temperature coatings often need heat to reach full performance. The ColyHeatshield 960 data sheet specifies a heat-curing requirement, so plan it around your commissioning schedule. Tell our team how and when the equipment will first be heated.
Step 4: Check the limits
Both ColyHeatshield grades are not recommended for continuous immersion. Primer choice also matters, because not every primer can take high temperatures. Ask us to confirm preparation and any primer restrictions for the grade you choose.
Compare products
| Product | Type | Temperature | Best for |
|---|---|---|---|
| ColyHeatshield 920 | Modified alkyd aluminium | Up to 200°C | Power, petrochemical and offshore steel |
| ColyHeatshield 960 | Silicone aluminium | Up to 600°C | Exhausts, chimneys, flare stacks, pipework |
| Heat Resistant Coating | Heat-resistant coating | 200°C and 600°C grades | Commercial and industrial metal structures |
Common mistakes to avoid
- Guessing the temperature instead of measuring it.
- Using a 200°C grade on a surface that reaches higher temperatures.
- Skipping the heat-curing step for silicone coatings.
- Using an ordinary primer under a high-temperature finish.
Questions we often get
What paint can I use on an exhaust or chimney?
For surfaces up to 600°C, such as exhausts, chimneys, flare stacks and hot pipework, ColyHeatshield 960 is the listed option. It requires heat curing as specified in its technical sheet.
Why does heat-resistant paint need to be heated?
Silicone-based coatings typically complete their curing when exposed to heat. Follow the heat-curing sequence in the ColyHeatshield 960 technical sheet before full service.
This guide gives general selection advice. Always follow the product’s current technical data sheet and confirm the complete system with the Coly technical team before use.