Old wall renovation how to paint the old wall

After years of use, walls often appear to have fallen off or stained, making the entire space seem old. At this point, a friend who encounters this situation will want to paint the walls by himself, which will save money and enjoy the fun of his own hands. Painting the walls looks simple but requires some skill. So how do you paint the old wall ? Don't worry, today Xiao Bian tells you here a few steps for painting the old wall and hopes to help everyone.

How to paint old walls

Tools / Materials:

Latex paint, putty, interface agent, kraft paper, white latex, bucket, roller brush, board brush, blade, scraper, sandpaper, long stick.

Steps/methods:

1. Wet the wall first to save time and effort when shoveling. Eradicate the part of the original wall that has been flooded until the cement mortar wall surface is exposed.

2, the wall surface brushing agent, brush interface agent must be brushed, but also to brush evenly.

3. Under normal circumstances, use kraft paper tape and white latex to cover cracks (but can not guarantee that 100% will not crack again).

4, uneven wall needs leveling, the general gypsum is more commonly used, concave and convex difference does not exceed 0.5 centimeters.

5. Non-load-bearing walls such as light walls and heat-insulating walls all need to be patched. Try to choose a wall cloth and white latex with a better texture. If there are conditions, you can use a grid cloth, and the crack prevention effect will be better. .

6. It is better to use putty with high grain fineness and hard texture. It is also possible to add certain white latex in putty to increase the hardness of putty. Use fine sandpaper. Generally soft texture putty (such as 821) with 400-500 sandpaper, hard texture (such as wall lining, easy to flat) 360-400 is better, if the sandpaper is too thick, it will leave a deep Sand marks are not covered by brush paint. After polishing, you must thoroughly clean the wall to avoid too much dust, affecting the paint adhesion. The unevenness does not exceed 3 mm.

7, the primer must be brushed uniform, to ensure that the walls are brushed everywhere, if the wall to eat a large amount of paint, the primer is best to add a little amount of water to ensure that even brushing. Do not think it is because it is the primer to use a little more than a roller on it, the primer brushing effect will directly affect the effect of the top coat, use the same texture as the paint roller.

8, putty after polishing is completed, there will be some blemishes (pit eyes), under normal circumstances it is difficult to see, only after brushing paint will be very obvious, this time you need to find a fill, pay attention to make up must be polished flat, Use a primer with a little more water to brush it again, so as not to have a color difference due to the different amount of draught when compared to other walls.

9, do not add too much water, will affect the film thickness, feel and hardness of the paint, try to choose a little better tool, the drum's hair should not be too short, but it must be fine, so that the brush out of the paint film will feel fine , Brushing mainly pay attention to the corners, each part of the roll and the direction of the paint, the corner treatment, most of the time is the use of brush or brush to brush, this will easily cause the edge of the texture and the entire surface is inconsistent, visual differences If you have conditions, you can buy an edge drum, corner brush with a board and then use the side roller to receive it again, pay attention to the material of the side roller and brush the same side of the roller, brush every time when the big roller The paint on the place must be evenly distributed. It must not be too thick or too thin. Otherwise, it will cause inconsistent light reflection due to the uneven thickness. When the paint is applied, there will be a paint-removing action after each roll on the wall. This requires every roll The direction of the paint should be the same, otherwise it will cause the texture of each roller to roll out, the reflective angle will be different, there will be differences in the visual.

10. Maintenance: 4 hours after the latex paint is applied, it will be dry, but the dried paint film has not reached a certain hardness. This requires care. It is very simple. Do not scrub or touch the wall within 7-10 days. Face action can be.

The above is a brief introduction to how to paint the old wall . I hope to help you. For more information, please visit this website. Stay tuned.

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