Watco Epoxicote High Build Primer


    Epoxy resin primer for preparing bare concrete for painting, overcoating with Epoxicote High Build.

    • Primes hard, smooth concrete ready for painting
    • One coat application – quick and easy to apply
    • Low odour, two-part, water-based epoxy resin
    • Seals porous concrete to prevent bubbling in new paint

    Note: While great care is taken with the colour samples shown, no guarantee can be given that they represent exactly the colours offered.

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    £91.25(ex. VAT)
    £109.50 (inc. VAT)
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    Available for Delivery (See Delivery Options Below)


    Watco Epoxicote High Build Primer is specially designed for use with Watco Epoxicote High Build, a high performance 100% solids epoxy resin coating which benefits from the use of this primer on bare concrete surfaces.

    Use the primer on hard, smooth, power floated concrete which would otherwise reject a paint coating. This eliminates the need for grinding or costly shot blasting.

    Also use on weaker, porous bare concrete surfaces.

    If a high build coating such as Watco Epoxicote High Build is applied to a porous unsealed concrete surface, air can become trapped in the coating during application and cure leading to bubbles in the finished floor. This primer prevents this from happening.

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    Features & Benefits

    • Areas of use include:
      • Priming any bare concrete surface before applying Watco Epoxicote High Build
    • Primes hard, smooth, or power floated concrete ready for painting
    • Seals porous concrete to prevent air entrapment (bubbles) in new paint coating
    • One coat application – quick and easy to apply
    • Low odour, two-part, water-based epoxy resin
    • Ready for overcoating with Watco Epoxicote High Build after 12 hours at 20°C

    Surface Preparation

    Bare concrete – if surface laitance is present remove using Watco Etch & Clean. Flush with clean water and allow the surface to dry. If residual damp remains this is acceptable as Epoxicote High Build Primer is breathable.

    New concrete – should be left for four weeks to dry in the summer and six in the winter. Should surface laitance be present, prepare the floor using Watco Etch & Clean. Flush with clean water and allow the surface to dry.


    Remove the two inner tins from the tall outer tin. Stir the contents of each tin thoroughly and pour 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 colour and consistency are 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 sides and bottom of the tin.


    Best results are obtained in warm (minimum 15°C), dry conditions with good ventilation. Apply with a medium pile roller, working well into the surface of the concrete. Do not exceed the maximum coverage of 18m2 per 3 litre pack, per coat.

    Test Results

    • Abrasion Resistance ISO 5470-1 - 82mg
    • Adhesion Test EN 1542 - 3.4MPa/Nmm2
    • Impact Resistance ISO 6272 - Class 3
    • Adhesion Test ISO 2409 - Class 0
    • Flexibility ISO 1519 - 2mm
    • Water Permeability EN 1062-3 - 2mm

    Standard Compliance

    • EN 1504-2
    • VOC LEVEL 10g/litre (very low)
    • ISO 16000


    Unsuitable for bare metal.

    Most self levelling compounds cannot be painted - contact our technical team for details on 0113 2455450 (option 2) or send a message to [email protected].

    Use only with Watco Epoxicote High Build.

    Product Details

    Data sheet

    For Use By
    Consumer Use
    Interior / Exterior Use
    Interior Use
    Water / Solvent Based
    For Use On
    Application Method
    Medium pile roller
    Cut in using a brush
    Single, Two or Three Pack
    Pack Size
    Minimum Applied Thickness
    120 microns
    Minimum Applied Thickness
    120 microns
    Mixing Ratio
    100 parts curing agent : 20 parts resin
    Pot Life (at 20°C)
    Up to 2 hours at 20°C
    18m2 per 3L
    Recommended Thinner/Cleaner
    Min. Application Temperature
    Air temperature 15°C
    Floor temperature 10°C
    Touch Dry
    10°C: 12 hours
    20°C: 6 hours
    Recommended Dry Film Thickness
    120 microns
    Recommended Wet Film Thickness
    160 microns
    UN Number (Activator)
    UN Number (Base)
    Dry to Recoat
    10°C: 24 hours
    20°C: 12 hours
    Base Type
    Base Type
    Suitable For Use On
    Suitable For Use On
    Suitable For Use On
    Concrete Floors
    Application Method
    Product Type
    Product Range
    Colour Family

    Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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    Watco Epoxicote High Build Primer is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

    Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

    Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

    All delivery costs below are excluding VAT

    Total area²
    Or enter length and width dimensions:

    *All estimates are based on theoretical consumption rates for a single coat and do not take into account any substrate deviations or wastage


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