Sherwin-Williams Heat-Flex Hi-Temp 1200



Sherwin-Williams Heat-Flex Hi-Temp 1200 is the next generation single- component inert multipolymeric matrix coating that outperforms alternatives in combating corrosion under insulation (CUI) and in high heat applications. 

Bulk Buy

£937.81 tax excl.

£1,125.37   tax incl.
Available colours:

Product Description

Sherwin-Williams Heat-Flex Hi-Temp 1200 is the next generation single- component inert multipolymeric matrix coating that outperforms alternatives in combating corrosion under insulation (CUI) and in high heat applications

Features & Benefits

  • Resists corrosion under insulation
  • Resists stress corrosion cracking
  • Application surface temperatures from ambient to 260°C (500°F)
  • Operating surface temperatures cryogenic to 649°C (1200°F)
  • Heat curing not required to cure and provide corrosion resistance
  • Self priming, single component
  • No maximum recoat time

Recommended Uses

  • Direct to steel or stainless steel
  • As a coating under insulation
  • Cyclic service up to 649°C (1200°F)
  • Acceptable for use on cryogenic equipment
  • For use over properly prepared steel surfaces, either insulated or uninsulated: Power Plants, Refineries, Chemical Facilities, Offshore/Marine, Pulp & Paper 

Performance Tips

When using spray application, use a 50% overlap with each pass of the gun to avoid holidays, bare areas, and pinholes. If necessary, cross spray at a right angle.

Spreading rates are calculated on volume solids and do not include an application loss factor due to surface profile, roughness or porosity of the surface, skill and technique of the applicator, method of application, various surface irregularities, material lost during mixing, spillage, overthinning, climatic conditions, and excessive film build.

No reduction of material is recommended as it can affect film build, appearance, and adhesion.

*If reduction is required for application to hot steel, use MAK, R6K30 up to a maximum of 5% by volume.

During application to hot steel, apply coating in several thin passes to allow solvent to escape and to prevent blistering. Allow at least 15-20 minutes between each coat. If blistering does occur, brush out immediately.

Always test adhesion by applying a test patch of 2-3 square feet. Allow one week to dry before checking adhesion.

In order to avoid blockage of spray equipment, clean
equipment before use or before periods of extended downtime with xylene/MAK.

Minor color change may be exhibited in exposed service, but will not affect performance.

Topcoating: If applying a topcoat, apply a mist coat of the topcoat. Allow 10 minutes flash off and follow with a full coat. 

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Technical Data

Typical Coverage (per coat)4.5m² per litre
Touch Dry20 minutes
ApplicationBrush, Roller, Spray
The figures stated above are approximate. Please ensure you refer to all datasheets for full application information.


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


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