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    Home > Coatings News > Paints and Coatings Market > Coating knowledge: six reasons for the failure of polyurethane waterproof coating

    Coating knowledge: six reasons for the failure of polyurethane waterproof coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tips: 1 Inferior materials: due to the price competition of waterproof materials in the market, many domestic polyurethane material manufacturers cut corners on waterproof materials 2 This will reduce the physical properties of waterproof materials and lead to waterproof failure 3 There is water vapor in the bottom layer: because polyurethane waterproof coating is oily waterproof material, it must be confirmed whether the plain ground is dry before application, otherwise, after waterproof, the water vapor is wrapped in it, and converted into strong steam through sunlight, which will cause the peeling of polyurethane waterproof layer 4 The bottom layer is not clean: because before the waterproof construction, the plain ground must be clean and free of dust and looseness Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Coating home news: 1 Inferior materials: due to the price competition of waterproof materials in the market, many domestic polyurethane material manufacturers cut corners on waterproof materials 2 This will reduce the physical properties of waterproof materials and lead to waterproof failure 3 There is water vapor in the bottom layer: because polyurethane waterproof coating is oily waterproof material, it must be confirmed whether the plain ground is dry before application, otherwise, after waterproof, the water vapor is wrapped in it, and converted into strong steam through sunlight, which will cause the peeling of polyurethane waterproof layer 4 The bottom layer is not clean: before the waterproof construction, the plain ground must be clean, and there should be no dust and loose substances as far as possible, otherwise the waterproof layer and the base layer will not be firmly bonded, leaving potential leakage 5 Polyurethane waterproof coating waterproof layer is too thin: the polyurethane waterproof layer must reach a certain thickness to have waterproof effect, because the polyurethane material itself still has low water absorption characteristics If the thickness of the waterproof layer is insufficient, after days of heavy rain, the rainwater passes through the polyurethane waterproof layer to the bottom, and through the sunshine in good weather, water vapor will still be generated at the bottom, causing the waterproof layer to peel off 。 It is better to stick glass fiber gridding cloth at all corners for reinforcement to prevent polyurethane waterproof layer from breaking and causing leakage 6 Lack of construction experience: the waterproof construction is best operated by the waterproof professional construction team You can't go to the hardware and building materials shop to buy some waterproof materials to paint Before the waterproof construction, it is necessary to carefully judge the cause of leakage and then solve it Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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