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    Home > Coatings News > Paints and Coatings Market > The process requirements and operating methods of exterior coatings

    The process requirements and operating methods of exterior coatings

    • Last Update: 2021-01-02
    • Source: Internet
    • Author: User
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    China Paint Online News Information
    the construction of exterior paint is a very demanding project, the process is complicated, but it is very popular with everyone. Don't worry about the difficulties of construction, the next
    China Coatings onlineexperts
    will introduce you to the external wall paint construction process construction problems and related requirements.1, exterior paint technology requirements
    1, the overall construction quality of exterior paint in accordance with the "residential decoration project construction specifications" and "building decoration works construction quality acceptance norms" requirements should meet the "advanced" standards.
    2, paint before application, should be in accordance with the product description of the ratio, according to the use of batch mixing, and in the specified time used up. All coatings should be stirred thoroughly before and during application.
    3, the entire project should use the same batch number of coatings, and each time the coating should be uniform, color consistent.
    4, the work viscosity or consistency of the paint, must be controlled, so that the coating is applied without falling, do not show brush patterns. Do not dilute arbitrarily during application.
    5, when applied, the refore coating must be done after the previous coating is dry;
    6, different colors of paint application, should be different color parts to do a good job of protection, to prevent cross-contamination.
    7, the outer wall is applied in segments, should be separated seams, wall drop pipes, etc. as the dividing line.
    8, under the direct exposure of strong sunlight, shall not be applied.
    9, other outstanding matters are based on the current national or industry standards.II, the construction process
    outdoor air-conditioning frame rust-proof - treatment of the outer wall cracking, powdering, shedding, cracks, empty drums, rust, etc. - outer wall hairing - grass-roots cleaning - grass-roots repair - grinding - full of scraping putty - polishing - brushing paint - local putty - polishing - brushing - brushing paint 3, Construction operation method
    1, outdoor air-conditioning frame, leftover screw pre-treatment of existing wall paint construction treatment, first the air conditioner support surface rust removal, sandpaper polished clean, smooth, and then painted anti-rust paint;
    2, on the basis of careful and careful inspection, the original wall, paint existing cracking, peeling, shedding, cracks, empty drums, rust spots, etc. to take appropriate methods to deal with.
    (1) powdered wall (including paint film peeling) treatment method: the eradication of peeling part of the paint film and powder layer part, requires no leakage shovel, powder layer all cleared, powdering is particularly serious can be assisted by other mechanical equipment construction.
    (2) Wall cracks and cracking treatment methods: small cracks and cracks using putty or other materials to repair, dry and flattened with sandpaper;
    (3) empty drum treatment method: first cut it, cut it off and remove dust, putty patch flat.
    (4) wall face hole left swelling tube treatment: left on the wall of the expansion tube, can be removed by tool knock loose, or use a grinder. The holes below 3 mm below the base surface are leveled with putty, the holes larger than 3 mm are repaired with cement mortar, and the drying is smoothed.
    (5) wall rust marks treatment method: can be cleaned with a weak acid solution, followed by high-pressure water flushing, serious part of eradication.
    (6) has done the old wall treatment method of insulation: for the deterioration of the insulation wall surface, the coating layer should be completely eliminated, and then repair flat, but not to destroy the insulation layer.
    (7) air conditioner and natural gas pressure control box behind the wall flour brush method: first polishing, then painting.
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