Centrecoat Armourcoat 3-350 Primer

Part A: UN3082 (Class: 9, Pk Grp: III), Part B: UN2735 (Class: 8, Pk Grp: III)
A 2 part epoxy primer for use on flooring prior to application of Centrecoat Armourcoat 3-350.
Available in 5 Kg
From £85.70 £71.42
In stock
Only %1 left
Product Description

Centrecoat Armourcoat 3-350 Primer is a 2 part epoxy primer with good penetrating properties for use on concrete & polymer modified cementitious screeds prior to application of Centrecoat Armourcoat 3-350.

Best Uses

Centrecoat Armourcoat 3-350 Primer is formulated to improve the adhesion of Centrecoat Armourcoat 3-350 to the floor substrate. Armourcoat 3-350 Primer benefits from low viscosity to penetrate the substrate, while sealing the concrete pores reducing the potential for out gassing and pin-holing in the subsequent resin floor finish.

Centrecoat Armourcoat 3-350 Primer is suitable for application to thoroughly prepared concrete, polymer modified sand and cement screeds, steel, brickwork, block work and timber.


The concrete substrate must be at least 28 days old, sound with a minimum compressive strength of 25 N/mm2 and a minimum pull off strength of 1.5 N/mm2.
The substrate must be clean, dry with a moisture content less than 5% (75% RH) and free of all contaminants such as dirt, oil, grease, coatings and surface treatments etc. The substrate should be free from rising damp and ground water pressure and contain a functional damp proof membrane.

Inadequate preparation will lead to loss of adhesion and failure. Grinding, vacuum contained shot blasting or planing is recommended depending on the final finish to be applied. Precussive scabbling or acid etching is not recommended.

Oil and Grease
For large areas of contamination, use hot compressed air treatment. Small, isolated contamination should be removed using an appropriate degreaser, rinsed thoroughly and allowed to completely dry. A coat of Armourcoat Oil Tolerant Primer should then be applied (see separate datasheet).

Add the hardener component to the resin component and mix using a low speed electric mixer (200 - 500 rpm) fitted with a mixing paddle designed to minimize
air entrapment for 1-2 minutes until homogeneous. Care should be taken to ensure that any material adhering to the sides and bottom of the mixing vessel is thoroughly mixed in otherwise uncured patches may result.

Once mixed the primer should be applied immediately in a thin continuous film. Work the primer into the surface using a stiff brush or roller avoiding pooling. On porous surfaces Centrecoat ArmourCoat 3-350 Primer will be absorbed very quickly leaving dry patches. A second coat should be applied to these dry areas to ensure good adhesion and reduce the possibility of air release from the substrate causing bubbles or pin holing in the final topping.

Technical Details
Components: Two Pack
Type: Epoxy
Stock Colours:  
Tintable: No
VOC Content:  
Volume Solids:  
Suitable Substrates: Thoroughly prepared concrete, polymer modified sand and cement screeds, steel, brickwork, block work and timber.
Application Method: Stiff Brush, Roller
Theoretical Coverage: 200 - 250 g/m2
Wet Film Thickness (WFT):  
Dry Film Thickness (DFT):  
Induction Time: -
Pot Life: 25 minutes at 20°C
Surface Dry:  
Overcoatable: Between 15 - 36 hours at 20°C
Fully Cured:  
Cleaner / Thinner:  
Shelf Life:

12 months if stored in accordance with the above recommendations.

Materials should be kept dry and stored in a weather proof building maintained at 15°C to 20°C on pallets and away from walls. Consignments should be used in order of batch number. Protect from frost.

Packaging: Available in 5 Kg

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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