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    MasterFinish SRT 426 - Solvent free surface deactivator (Surface Retarder) for negative application for the manufacturing of exposed aggregate concrete

    What is MasterFinish SRT 426?

    MasterFinish SRT 426 is an aqueous dispersion of high-grade active components free of organic solvents. After application it forms a soft but stable film on the formwork. After demoulding the film remains on the concrete surface or on the formwork where it can be removed easily. A range of four graded types marked by colour codes are available:

    • ​Yellow: exposure depth: 0.1-0.5 mm
    • Green: exposure depth: 1.0-2.0 mm
    • Pink: exposure depth: 2.0-3.0 mm
    • Grey: exposure depth: 3.0-6.0 mm ​

    What is MasterFinish SRT 426 recommended for?

    MasterFinish SRT 426 may be applied for architectural concrete where excellent surface finishes and high reproducibility are required. It should preferably be used on mould surfaces (negative) application.

    MasterFinish SRT 426 is ideal for all types of concrete guaranteeing perfectly washed surfaces, especially for all horizontal and vertical, smooth, structured or bevelled with formwork types such as word, steel or polymer.​​

    Which are the main benefits of MasterFinish SRT 426?

    MasterFinish SRT 426 gives an improved exposed surface of concrete. Due to its low viscosity it is easy to apply, economical in use and very reliable even under difficult application conditions. It dries quickly, is resistant against humidity and abrasion and can be applied on all types of clean formwork/moulds.

    The high-quality effect of MasterFinish SRT 426 allows a wash-out time from 16 hours. The immediate wash-out after the stripping of the forms guarantees uniform edges.

    • For excellent surface finish
    • Solvent free and environmental friendly
    • Speeds up the production process by shortening the cleaning times of the forms
    • Reliable function under difficult application conditions
    • Easy and economical application ​​


    MasterFinish SRT 426_TDS

    pdf (266.87 Kb)


    Oman: +968/24435800
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