What steps are needed to paint the exterior wall?
A, during the period of construction, the operator should ensure that there is enough sleep, to ensure that the aerial work concentration, no accident;
B, before construction, should check whether scaffolding, scaffolding set-up is firm, confirm the safe and reliable rear can start operation;
C, it is forbidden to wear slippers, flat shoes and high heels to work on the scaffold;
D, when storing and using solvent-based primers, topcoats and thinners, fireworks are strictly prohibited;
E, equipped with necessary protective glasses, protective masks.
Exterior wall painting steps-introduction of exterior wall painting steps
First, the grass-roots treatment
First, clean the dust and other adhesions on the surface of the base. Large depressions should be smoothed with polymer cement mortar. And wait for it to dry, and the smaller holes and cracks are repaired with cement latex putty. Brush the wall with zinc sulfate solution or dilute hydrochloric acid solution, wash off the oil stain with detergent, and finally wash it with clear water. The original coating of the base should be treated differently according to different situations: the loose, shelled and fragile old coating should be removed; Polishing the firmly adhered old coating; All waterproof coatings shall be removed.
B, brush primer (except wood and painted surface)
If the wall is loose and absorbent, you can evenly apply glue (acrylic emulsion or water-soluble building glue diluted 3 ~ 5 times with water) once or twice on the cleaned base, and you are not allowed to miss it, and you can't apply too much glue to cause flowing or accumulation.
C, local putty
After the primer is dried, fill the unevenness with putty, and polish it after drying. The finished putty should be stirred evenly before use. When the putty is thick, it can be adjusted with water.
D, full blowing putty
Put the putty on the tray and scrape it with a trowel or leather scraper, first up and then down. Blow putty 2 ~ 3 times according to the basic situation and decoration requirements, and the putty should not be too thick each time. After the putty is dry, it should be polished with sandpaper in time, and it is not allowed to grind out waves or leave grinding marks. After polishing, floating ash should be swept away.
E, brush the bottom coating.
Stir the primer evenly. If the primer is thick, it can be diluted according to the requirements of the product manual. Brush evenly with roller brush or row brush, and be careful not to miss the brush or brush it too thick. After the primer is dried, putty can be partially supplemented when necessary, and the sand is smooth after drying.
The above is the introduction of the external wall painting steps. In Bian Xiao's view, our understanding of the painting steps of external walls not only helps us to paint the external walls better, but also helps us to do practical work better. At the same time, it also makes us better prepared for what we need for exterior wall painting and familiar with the use method.