The most commonly used external wall waterproofing is k11 universal waterproof coating. The combination of high molecular polymer emulsion and inorganic powder is a kind of two-component waterproof material. It is a high-quality cement and special quartz. The sand is formed by polymerizing a specific polymer to form a waterproof coating on the surface and penetrate the interior of the material to form crystals to block the passage of water to achieve a double waterproof effect. Next Xiaobian introduced the external wall waterproof specification and external wall waterproofing method.
Wall waterproof specification
The first step: clean the grassroots, old and new surface must be cleaned, there must be no debris and dust, so as not to affect the bond strength, the base layer should be dry when brushing waterproof coating. Generally, it can be observed with the naked eye, and can be covered with a 1m square cloth, using sunlight for 1-3 hours.
Step 2: After the grass-roots clean-up process is completed, the next step is to clear the corners, which are the so-called yin and yang angles, construction joints, and expansion joints, etc., to deal with the more important parts. Especially pay attention to the drainage holes to strengthen the treatment and need to brush 2-3 times waterproof primer.
Step 3: Prepare waterproofing membranes, waterproof coatings, base coats, and adhesive-coatings. The coatings must be clearly separated. In order to improve the adhesion of the waterproofing membranes to the base layer, the primer can be used repeatedly to apply the coating, and the coating can be applied evenly and completely. Fully infiltrated the concrete base layer to improve the bond strength and shear strength.
Step 4: The waterproof coating must be formulated according to the instructions for use of the product. Proportioning should be made according to the ratio of A:B=2:1.
Step 5: Mixing time is about 3 - 5 minutes, and stir until the mixture of A and B components is even.
The sixth step: The uniform mixing of waterproof paint according to the area to be painted on the beginning brushing, grassroots brushing should be greater than the area of ​​sticky material, not more than thirty minutes
Step 7: Before painting the second coating, you must wait for the first time that the coating has completely solidified before applying it again. The first time after the primer is applied, it will take about 4-8 hours to be painted again for the second time. For the third time, the first coating thickness was 0.5mm, the second coating thickness was about 0.5mm, and the third coating thickness was about 0.5mm.
Step 8: Wait until the second coating has completely solidified before bonding the coil.
External wall waterproofing method
1. For the partial demolition of the cracked and cracked part of the external wall, remove the wall face tile, mortar joint layer and thermal insulation layer to the wall structural surface;
2. Find the cracks in the outer wall, cut out the grooves in the cracks, and fill the grooves with polyurethane sealant;
3, the scope of removal and use of flexible brick wall joints putty filling, brick joints to fill the gap loose mortar, remove it, refill flexible putty;
4. After the wall cracks and brick joints are all processed, apply waterproof construction brushing on the large surface, clean the surface of the brick, brush the primary surface treatment agent on the large surface, and then apply 2mm thick brushing on the large surface. coating;
5, according to the original structure level restoration wall insulation layer, brick layer.
New exterior wall insulation material
1, XPS extruded polystyrene foam sheet, also known as polystyrene extruded sheet (abbreviated as XPS); has a perfect closed cell honeycomb structure, its density, water absorption, thermal conductivity and steam permeability coefficient are low As for other types of plate-shaped heat-insulating materials, they have the characteristics of good strength, light weight, air permeability, corrosion resistance, anti-aging, and low price.
2. Insulation mortar is a kind of premixed dry mortar made of various light materials as aggregate, cement as cement material, blended with some modified additives, and mixed by the production enterprises. Mainly used for building external wall insulation, has the advantages of convenient construction and good durability.
3, phenolic foam, is a new type of insulation material that is recognized as the most promising building in the world. Because this new material is essentially different from the material used in the conventional polymer resin by adding flame retardant. It does not burn in the fire, does not melt, does not emit toxic fumes, and is light, non-toxic, and non-toxic. Corrosion, insulation, energy saving, sound insulation, low cost and other advantages
4, EPS board (also known as benzene board, foam board) is an abbreviation of expandable polystyrene board, is made of renewable polystyrene raw material through pre-fabrication, aging, molding, drying and cutting process. It can be made into foamed plastic products of different densities and shapes, and can also produce foam boards of various thicknesses.
Editor's summary: About the external wall waterproof specification and external wall waterproofing method introduced here, I hope to be helpful to everyone. If you want to know more about yourself, you can follow the information on this site.
External Wall Waterproof Coating Exterior Wall Waterproof Specification
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