Watco Polyaspartic Primer is a unique, two part resin that has been specially designed prior to using Watco’s range of polyaspartic coatings.

When applied by roller, Polyaspartic Primer primes and seals very porous or high suction surfaces, such as sand and cement screed, to ensure a uniform finish and help prevent air entrapment bubbles in the subsequent coating.

Polyaspartic Primer cures quickly and after just one hour it leaves a tacky finish which can then be overcoated.

This product can also be beneficial when overcoating an existing, well-bonded paint before using a Watco Polyaspartic coating as a top coat.

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• Features & Benefits
• Surface Preparation
• Mixing
• Test Results
• Application
• Standard Compliance
• Limitations

Features & Benefits

• Use with the following Watco products:
• Cold Set Coating
• Fastcoat
• Food Safe Coating
• Protecta-Coat
• Safety Coat Cold Cure
• Safety Coat Food Safe
• Areas of use includes production areas, warehouses, showrooms, workshops and loading bays
• Cold stores, walk-in fridges and freezers
• Primes and seals porous, dusty floors prior to painting
• Can be used at minus 10°C to 25°C
• Ready to coat in 4 hours
• Superior performance demonstrated by ISO testing to CE Mark EN1504-2

Surface Preparation

Bare concrete – remove surface laitance, dust and any light dirt or grease deposits using Watco Etch & Clean. Watco Etch & Clean also etches smooth, bare concrete surfaces to provide a key. Flush with clean water and allow surface to dry. For the removal of heavier deposits of oil and grease, Watco Concroff is recommended; again, flush with clean water and allow the surface to dry.

New concrete – as a guide, new concrete should be left for eight weeks to dry. The surface should then be prepared using Watco Etch & Clean and thoroughly rinsed away and left to dry prior to applying this primer.

Application in low temperatures – If applying in cold conditions the product should ideally be stored in a warm room at least 8 hours prior to use. Below 5°C it may be necessary to avoid processes which involve wetting the floor due to the difficulty in drying. A good sweep or mechanical brushing may be sufficient.

Mixing

Mix between 10°C and 25°C. Remove the two inner tins from the tall outer tin.

Stir each tin thoroughly and poor all of the contents into the outer tin, (scrape around the inside of the tins to remove any residue). Mix the components together thoroughly using a spatula or similar wide bladed tool, (a piece of wooden batten is ideal). Continue mixing until an even consistency is obtained. Do not mix more than one pack at a time.

If a paint stirrer fitted to an electric drill is used, also use the spatula to blend in any unmixed material from the side and bottom of the tin. Do not dilute.

Test Results

• Abrasion Resistance ISO 5470-1 - 361mg
• Impact Resistance ISO 6272 - CLASS 2
• Adhesion Test ISO 2409 - CLASS 0
• Adhesion Test EN 1542 - 3.0MPa/Nmm²
• Flexibility ISO 1519 - 2mm
• Gloss Value - 96
• Water Permeability EN 1062-3 - W₃

Application

Apply between -10°C and +25°C. Empty the mixed components into a paint tray and apply to the floor using a microfibre roller, (not a medium pile or foam), ‘working out’ the primer into a thin paint film. A paint brush can be used for cutting in. Do not apply too thickly since this will result in reduced coverage.

Standard Compliance

• EN 1504-2
• BREEAM Compliant
• Medium VOC level (500g/litre)
• ISO 16000
• REACH Compliant

Limitations

Do not apply to damp surfaces.

Do not apply if rainfall is imminent.

Most self-levelling compounds cannot be painted – please ask for details.

Painting chequer paint can be a problem since coatings can wear prematurely off the ‘high spots’.