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    Home > Coatings News > Paints and Coatings Market > Polyurethane waterproof coating application and construction operation points.

    Polyurethane waterproof coating application and construction operation points.

    • Last Update: 2020-09-27
    • Source: Internet
    • Author: User
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    China Paint Network
    News: Polyurethane
    waterproof coating
    key process operation points are as follows
    waterproof grass should be flat, strong, dry, no sharp bumps, honeycomb, hemp surface and skin, no oil, cracks, grass deformation seams, tube root left grooves Internal should be embedded with sealing materials and additional waterproof treatment, for the flat solid grass-roots do not need to apply grass-roots treatment agents, do not use modified asphalt coils for the grass-roots treatment agent, loose porous substrate and high temperature high humidity and exposure to the environment of construction, it is recommended to use special grass-roots treatment agents, can greatly improve the quality of on-site construction coating. For deformation seams, cracks and other parts should be sealed in advance.
    Yin and Yang angle, pipe root, deformation seams and other basic details, should first carry out additional waterproof layer construction, with CLASS II products, add 2 to 4 times (thickness of about 1mm), if you need to pave the tire body material must be soaked, horizontal deformation seam site should first be extra layer of polyester non-woven cloth to form an additional waterproof layer.
    the use of metal scrapers, should be divided into 2 to 3 times coating, can also be coated once, spread over the coating, the first coating should be fully cured to the finger touch basic non-stick when applied a second time, the second time and the first coating direction vertical, if you need to lay tire reinforced materials, should be coated
    painting
    , side laying reinforced materials.
    coating waterproof layer is finally completed and accepted by quality inspection (closed water test if necessary), the protective isolation layer construction is carried out according to the relevant specifications or design requirements.
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