International Interplate 855

Part A and B: UN1263 (Class: 3, Pk Grp: II)
A two pack, zinc silicate shop (pre-construction) primer providing good corrosion protection even after heating up to 800°C.
Available in 20 Litres in NQA857 Grey
£303.00 £252.50
In stock
Product Description

International Interplate 855 is a two pack, zinc silicate shop (pre-construction) primer providing good corrosion protection even after heating up to 800°C.

Best Uses

International Interplate 855 is suitable as a shop (pre-construction) primer for the protection of steel during fabrication and assembly. Suitable for use with controlled cathodic protection. For use at Newbuilding.

Resistant to damage caused by welding, gas cutting and fairing. Suitable for fast welding processes and offers control of secondary surface preparation requirements.


Use in accordance with the standard Worldwide Marine Specifications. All surfaces to be coated should be clean, dry and free from contamination.

Preparation For New Building
Shop primers should be applied using automatic blasting/spraying equipment. Blast to a minimum of Sa2½ (ISO 8501-1:2007). Steel grit or a mixture of steel grit of particle size 0.6-1.0mm and steel shot of particles size 0.6-1.4mm are normally used to give a predominantly angular profile. Apply Interplate 855 before oxidation occurs. If oxidation does occur the entire oxidised area should be reblasted to the standard specified above. Ensure that the area is clean and dry prior to application of Interplate 855.

Material is supplied in 2 containers as a unit. Always mix a complete unit in the proportions supplied. Agitate Paste (Part A) with a power agitator, slowly add binder (Part B) while agitating. Allow to mix for at least 5 minutes, sieve through a 30-60 mesh screen before use. Continue stirring during use.

Technical Details
Components: Two Pack
Type: Zinc Silicate
Finish: Matt
Stock Colours: NQA856 Grey
Tintable: Possible upon request. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 472 g/L
Volume Solids: 25%
Suitable Substrates: For steel
Application Method: Airless Spray, Brush, Conventional Spray, Roller
Theoretical Coverage: 16.7 m2 per litre at 15 microns DFT, allow appropriate loss factors
Wet Film Thickness (WFT): 60 microns
Dry Film Thickness (DFT): 15 microns
Induction Time: -
Pot Life: 24 hours at 10°C
Touch Dry:
Hard Dry:
Cleaner / Thinner: International GTA820 (Winter Grade), International GTA840 (Summer Grade)
Shelf Life: Part A - 12 months minimum from date of manufacture when maintained in protected storage at temperatures up to 25°C.
Part B - 6 months minimum from date of manufacture at temperatures up to 25°C. Subject to reinspection thereafter. Store in dry, shaded conditions away from sources of heat
and ignition.
Packaging: Available in 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.

Recommended products to use