International Intertherm 50

UN1263 (Class: 3, Pk Grp: III)
A single pack, aluminium pigmented silicone resin coating that is heat resistant up to 540°C.
Available in 6 Litres in A097 Aluminium
£173.53 £144.61
In stock
Product Description

International Intertherm 50 is a single pack, aluminium pigmented silicone resin coating that is heat resistant up to 540°C.

Best Uses

International Intertherm 50 is suitable as a light reflective primer / finish for surfaces that can reach dull red heat of up to 540°C, such as exhaust stacks. For use at Newbuilding, Maintenance & Repair or On Board Maintenance.


Use in accordance with the standard Worldwide Marine Specifications. All surfaces to be coated should be clean, dry and free from contamination. High pressure fresh water wash or fresh water wash, as appropriate, and remove all oil or grease, soluble contaminants and other foreign matter in accordance with SSPC-SP1 solvent cleaning.

Intertherm 50 is suitable for application to steelwork freshly coated with zinc silicate shop primers. If the zinc shop primer shows extensive or widely scattered breakdown, or excessive zinc corrosion products, overall sweep blasting will be necessary. Ensure that the zinc primer is fully cured prior to the application of Intertherm 50 by following the curing instructions on the relevant product data sheet. Other types of shop primer are not suitable for overcoating and will require complete removal by abrasive blast cleaning. Weld seams and damaged areas should be blast cleaned to Sa2½ (ISO 8501-1:2007).

Abrasive blast clean to Sa2½ (ISO 8501-1:2007).

Intertherm 50 may be applied directly over aged Intertherm 50 following thorough fresh water washing and degreasing provided the coating to be overcoated is in an intact and tightly adherent condition. Loose or flaking coatings should be removed back to a firm edge and Intertherm 50 or an appropriate primer should be used to repair the area before application of the full coat.

This material is a one pack coating and should always be mixed thoroughly with a power agitator before application. Apply using airless spray, conventional spray, brush or roller.

Technical Details

Certifications and Approvals

  • NATO Approval No. 8010-99-969-0549
  • Norsok M-501 System 2A

When used as part of an approved scheme, this material has the following certification:

  • Fire Resistance - Surface Spread of Flame (Exova Warringtonfire)
  • Fire Resistance - Marine Equipment Directive compliant

Technical Info

Components: Single Pack
Type: Silicone Resin
Finish: Gloss
Stock Colours: HTA097 Aluminium
Tintable: No
VOC Content: 509 g/L
Volume Solids: 45%
Suitable Substrates: As a light reflective primer/finish for surfaces that can reach dull red heat of up to 540°C, such as exhaust stacks..
Application Method: Brush, Roller, Conventional or Airless Spray
Theoretical Coverage: 18 m2 per litre at 25 microns DFT, allow appropriate loss factors
Wet Film Thickness (WFT): 56 microns
Dry Film Thickness (DFT): 25 microns
Induction Time: -
Pot Life: -
Touch Dry: 60 minutes at 15°C
Overcoatable: After 16 hours at 15°C
Hard Dry: 3 hours at 15°C
Cleaner / Thinner: Do not thin.
Shelf Life: 12 months minimum at 25°C. Subject to re-inspection thereafter. Store in dry, shaded conditions away from sources of heat and ignition. Prevent the ingress of moisture as this may lead to a pressure build up in the container.
Packaging: Available in 6 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

Recommended products to use