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    SKU: CSS55-00224
    Fosroc Renderoc LA 25kg - Your go-to solution for large volume concrete repairs, offering exceptional compatibility, controlled expansion, and long-lasting protection against diverse environmental factors.
    Availability: Please contact us for the stock availability.
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    Fosroc Renderoc LA 25kg is your solution for large volume concrete repairs, presented as a ready-to-use blend of dry powders requiring only the addition of clean water on-site. This free-flowing, shrinkage-compensated micro-concrete is designed for substantial repairs exceeding 25mm in thickness, with specialized applications available for <25mm—reach out to Fosroc Technical Helpdesk for guidance.

    Crafted from Portland cement, graded aggregates, and additives, Renderoc LA ensures controlled expansion in both plastic and hardened states, minimizing water demand. Its low alkali content reduces the risk of alkali-silica reaction, and the hardened product showcases exceptional thermal compatibility with concrete.

    Key Features:

    • Maximum compatibility with concrete of compressive strength 30 – 60 MPa.
    • Dual expansion system compensates for shrinkage in both plastic and hardened states.
    • Low alkali content minimizes the risk of alkali-silica reaction.
    • Exceptional bond to concrete substrates without the need for an independent primer.
    • Suitable for pumping or pouring techniques into restricted locations.
    • Self-compacting nature eliminates honeycombing and displaces air without vibration.
    • High strength and low permeability offer maximum protection against carbon dioxide and chlorides.
    • Pre-bagged to overcome site-batched variations—only clean water addition is required.
    • Contains no chloride admixtures.


    Renderoc LA is ideal for the reinstatement of reinforced concrete where low permeability and high compressive strength are crucial. Specifically developed for large-scale concrete repairs, it excels in areas with restricted access or congested reinforcement. Suitable for thicknesses of 25 – 150mm, it provides excellent resistance against chloride, carbon dioxide, and alkali-silica reaction. Renderoc LA aligns with repair methods 3.2, 4.4, 7.1, and 7.2 as defined by BS EN 1504-3.


    Renderoc LA stands out with its maximum compatibility, dual expansion system, low alkali content, exceptional bond, versatility in application methods, self-compacting nature, and a blend tailored for consistent performance.


    Contributing to sustainability goals, Renderoc LA optimizes repair processes, reduces material waste, and enhances the longevity of repaired structures.

    Products specifications
    Data Sheet Group
    Technical Data Sheet

    Technical Data Sheet 

    Safety Data Sheet

    Safety Data Sheet


    Below are the shipping rates:

    1. Orders =< 10 Kg: £6.50

    2. Orders =< 30 Kg: £9.99

    3. Pickup: £1.99

    Note: The shipping costs for products weighing over 30 Kg differ, please contact us for the shipping rates.

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    Call Us: 0203 034 1066