Winter exterior wall coating construction plan - — Water bag

In winter, the weather is cool, cold, rainy, humid climate characteristics, such as temperature decreased obviously. At this point, the exterior wall coating engineering problems encountered many metope in the construction. How to solve the problem of exterior wall engineering in winter construction are as follows: 1. Winter construction conditions and requirements for coating construction, qualified at the grass-roots level has five basic characteristics: strong, smooth, dry, neutral and clean. Suitable for coating construction conditions; Construction environment temperature must be controlled in 5 degrees above, environment humidity must be controlled within 85%, otherwise don't allow construction. two Coating construction conditions and requirements for the construction of exterior wall coating, demands after entering winter during construction period, when the temperature is less than 5 degrees, there are still some engineering need. In order to guarantee the construction quality, construction should be paid attention to the following: 1. Inspection and handling: handling at the grass-roots level is the foundation of painting work, basic level processing includes: remove dust, grease and loose material on the surface of the grass-roots; To reduce or eliminate the surface defects; Physical or chemical properties on the surface of the substrate is improved. In winter construction, when the base of high humidity and temperature too low, many parts of cement base will become white. When the underlying dry hard to judge, new grassroots will wipe on mortar. The winter maintenance period more than 14 days. 2. Be bored with child construction: coating system construction, base should be dry, should guarantee the wall temperature before winter construction. When the temperature is lower than 5 degrees during the day, should be in direct sunlight as far as possible on the metope of the construction. Commuting time should be controlled as far as possible in the morning 9:30 and 3 in the afternoon: after 30 before. When the temperature is below zero at night, the lining construction should be controlled at 11: at 2:30 after 30 before, otherwise can't construction, putty layer should not be frozen. 3. Putty and dry conditions: polishing putty must be completely dry before, in this way can be bored with child completely dry and not sticky sand paper and control surface roughness. If be bored with child do not dry or frozen, polishing putty glue sandpaper phenomenon occurs, the surface is not easy to burnish is flat and level. 4. Ensure base material is completely dry before coating: coating, coating of water-based coating temperature should be controlled in more than 5 degrees. In the process of dry film, when the temperature below freezing, the emulsion can be frozen demulsification, thus lose adhesion and film forming functionality, assure film drying in the process of low temperature below freezing. When the temperature of the natural environment is less than 5 degrees, should choose to have the metope of the solar radiation as far as possible the construction. Construction time control ~ 9:30 in the morning every day at 3:30, the lining construction control in the morning 11:30 PM ~ 2:30, when the environment temperature is less than 5 degree, low temperature below zero at night but not below 5 degrees, can choose single-component oily oily acrylic acrylic primer paint. Due to temperature, oily coating will be slow to dry in the process of film forming, therefore, before the next procedure, construction and coating time less than 24 hours. 5. Coating paint storage: winter construction begins, on-site to paint should be unified in the indoor classification code. Oily coatings and water-borne coatings shall be placed separately and shall not be in the same room, indoor temperature should be above zero. When indoor temperature is below freezing, heating or electric heating should be used to improve the indoor temperature. Banning the use of fire to improve indoor temperature. Is not used in the construction of the paint should be on indoor, frozen products shall not be used again. 6. Coating maintenance and finished product protection: film under the normal temperature 25 ℃, need 7 days to achieve drying, good performance in surface. When winter coating construction environment temperature is usually low