International Interfine 979

Part A: UN1263 (Class: 3, Pk Grp: III), Part B: UN3470 (Class: 8.3, Pk Grp: II)
Provides excellent long-term colour / gloss retention. Extended lifetime to first maintenance as part of a high end anti-corrosive system.
Available in 5 and 20 Litres. Tintable to many colours
From £352.39 £293.66
In stock
Only %1 left
Product Description

International Interfine 979 is part of International's premium range of polysiloxane finishes. It is designed to provide excellent long-term colour and gloss retention and provide extended lifetime to first maintenance when utilised as part of a high performance anti-corrosive system.

Best Uses

International Interfine 979 is a patented (US 6,281,321 and EP 0 941290), high performance, two component, high solids inorganic hybrid finish which contains no free isocyanates. Interfine 979 significantly improves upon the gloss and colour retention exhibited by typical polyurethane finishes as well as offering improvement in gloss and colour retention when compared to 1st generation epoxy modified polysiloxane finishes. Interfine 979 also displays the same corrosion resistance and has enhanced mechanical properties when compared to traditional epoxy technology.

Interfine 979 is intended for use in those market sectors where visual impact is important, and the need for a high standard of cosmetic appearance is required. These include high performance constructions such as bridges, offshore structures and tank farms in addition to general industrial and commercial steelwork where high levels of cosmetic performance are a key requirement.

The dual benefits of corrosion protection & high cosmetic appearance afforded by Interfine 979 mean that as well as exhibiting superior durability, this product also serves as an effective barrier coat similar to a traditional epoxy intermediate, and as such, allows a reduction in the total number of coats required from a multi-coat high performance system - saving application costs, and improving productivity during application.


All surfaces to be coated should be clean, dry and free from contamination. Prior to paint application all surfaces should be assessed and treated in accordance with ISO 8504:2000.

Primed Surfaces
Interfine 979 should always be applied over a recommended anti-corrosive coating scheme. The primer surface should be dry and free from all contamination and Interfine 979 must be applied within the overcoating intervals specified (consult the relevant product data sheet). Areas of breakdown, damage etc., should be prepared to the specified standard (e.g. Sa2½ (ISO 8501-1:2007) or SSPC-SP10, Abrasive Blasting, or SSPC-SP11, Power Tool Cleaning) and patch primed prior
to the application of Interfine 979.

Metallic Zinc Primed Surfaces
Ensure that the surface of the primer is clean, dry and free from contamination and zinc salts before application of Interfine 979. Ensure zinc primers are fully cured before overcoating.

Technical Details


  • Norsok M-501 System 1 (Pre Qualified)
  • NATO Approval No. 8010-99-168-7337 (White 5 Litres)


Interfine 979 can be applied over a limited range of primers and intermediates.
Suitable primers are:

Suitable intermediates are:

Interfine 979 must not be applied directly over Interzinc 52 low temperature grade cure (EPA176). Absolute maximum overcoating intervals with Interfine 979 are dependent upon primer/intermediate. Interfine 979 Recommended Working Procedures must be consulted prior to use. Interfine 979 should only be overcoated with itself.

Technical Info

Components: Two Part
Type: High solids inorganic hybrid finish which contains no free isocyanates
Finish: Gloss
Stock Colours: Just tints
Tintable: Yes, upon request. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 162.0g per Litre
Volume Solids: 76%
Suitable Substrates: For metal
Application Method: Brush, Roller, Air Atomised Spray or Airless Spray
Theoretical Coverage: m2 per litre at microns
Wet Film Thickness (WFT): 132 - 197 microns
Dry Film Thickness (DFT): 100 - 150 microns
Induction Time: -
Pot Life: 2.5 hours at 15°C
Touch Dry: 4.5 hours at 15°C
Overcoatable: 6 hours at 15°C
Hard Dry: 6 hours at 15°C
Cleaner / Thinner: Thinner and Cleaner: International GTA007
Shelf Life: Part A: 12 months, Part B: 6 months at 25°C
Packaging: Available in 5 and 20 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.

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