How is the specific operation of the steps of scraping putty on the roof

1. Soak the putty powder you bought with water first, and then stir it with a drill, knowing that the putty powder is completely covered and disintegrated by water, and completely loses its bubble shape, then you can paint it.

2. After soaking in water, it is necessary to paint, generally speaking, the putty for plant decoration is scraped twice, and the home decoration and office should be scraped at least three times or even more, which is different, and we should distinguish it.

3. If you originally brushed lime or paint, and now you want to paint latex paint, you must first remove the original wall and scrape the putty again.

4. If you want to paint a colored room, you can directly buy colored latex paint, and if you redeem it yourself, you must redeem it at one time.

5. The quality of the roller brush must be good, the hair quality is moderate, and the density is uniform, which affects the painting effect.

6. Brush the ceiling first, then the wall.

7. Be sure to dry it for the first time and brush it again again.

8. Use force evenly.

9. Brush the light color 2 times, if you want a strong color, brush it 3 times to be even.

Adjust the putty and proceed according to the prescribed proportion.

Start stirring, be sure to be even, no knots.

The cleaning of the wall, the dust, stones, cobwebs, etc. on the surface should be cleaned.

Scrape putty, one knife next to another. until the entire wall is scraped.

Wait for the putty to dry and sandpaper it. until the surface is flat. Fine decoration should be polished with high-brightness bulbs while illuminating.

Scrape the putty three times, repeat the above actions each time, and the surface wall is flat without shadows, until it is dark.

If you want to make latex paint to protect the wall, you must carefully polish the wall, otherwise it will cause irreversible defects.

For the process of latex paint, there are three methods, namely: brush method, roller coating method, and spraying method.

Brushing is to hook and trim the corners.

Roller coating, suitable for large area of wall, fast speed, good effect, operation up and down the Z-shaped route until the wall is painted.

Spraying, spraying paint on the wall with an air compressor, the effect is very high, and the effect is good.

Reason: The serious pulverization of putty powder is mainly due to the quality of the binder of the putty itself. If the putty layer is too thin or forced to ventilate or heat and dry after scraping, it will cause the water to disperse too quickly, and the putty layer will lose its adhesion and the putty layer will be seriously pulverized.

Solution: When applying the adhesive, use glue to glue off the floating dust, so as to increase the adhesion between the putty and the wall. After applying the binder, the wall is generally left to dry for 12 hours until the glue is dry before starting to batch putty.

Reason: The construction began because the base layer was not completely dried.

Solution: On the one hand, the bottom putty is not thoroughly dried, so it passes the surface, and the inner layer continues to dry when the surface layer is dried first, resulting in different degrees of drying and shrinkage between layers, resulting in easy cracking. On the other hand, if the putty layer is applied very thickly, the internal drying is slower, and the surface dries faster, causing cracking.

In addition, when the base layer is treated, the joints and leveling materials are not completely dried, and the hardness of the interior wall putty is scraped on it, which is also easy to cause cracking.

When scraping the putty for the first time, the thickness should depend on the surface of the base layer, and the general thickness is. The first putty allows a slight needle's eye, but no bubbles; The putty should not be too thick at one time, so as to avoid excessive dry shrinkage, which will affect the firm bond between the putty layer and the base layer. When scraping and coating, the force should be balanced, and the surface of the putty layer should be smooth as much as possible, and no obvious rough surface will appear.

When scraping and coating for the second time, try to make the surface of the putty layer smooth, fill the eye of the needle, and the force should be balanced when scraping and coating, so that the surface of the putty layer is smooth and does not appear obvious roughness.

Matters that should be paid attention to during construction:

When scraping the putty for the first time, the general thickness is allowed, and the eye of the needle is allowed, but there can be no bubbles; When scraping the putty for the second time, it should be kept flat and filled with the eye of the needle to ensure the smoothness of the putty layer as much as possible.

The quality of the adhesive of the putty itself is problematic, resulting in poor bonding effect; Or the scraping putty layer is too thin, and the forced ventilation after scraping the putty causes the water to disperse too quickly, which will lead to the serious pulverization of the putty layer.

1. It should be dried in the shade naturally, and do not open doors and windows to prevent rapid water loss and affect construction and deformation. The time to open the window for ventilation is also particular: it is best to choose between 10 am and 4 pm, when the temperature is relatively high to prevent the newly brushed putty from freezing.

2. The correct way to scrape putty is: wait for the first putty to be completely dry, and then brush the putty for the second time; After the putty is completely dry for the second time, it is carefully sanded with sandpaper. Don't scrape the putty too thickly.

Because the indoor air is dry and the water loss is fast, the putty can not be scraped too thickly, otherwise it is easy to cause hollowing, cracking, and wall inequality.

3. It is best to paste the roof, sand-gray wall and insulation wall with cloth (grid cloth and caulking tape), brush and scrape putty directly on the cloth until it is dry and smooth with sandpaper. If there are large holes or depressions in the wall, it is best to use gypsum powder and latex to adjust and flatten the wall. When there are large cracks on the wall, the local place is double-pasted kraft paper and then brushed putty, and when the area is large, it is best to paste the cloth and then brush the putty, so as to ensure that the wall is smooth and not cracked.

Scraping the plaster substrate twice prevents cracking and exploding.

It was treated with a good caulking plaster first.

When decorating, the program of scraping and carrying putty is usually used, but when is the putty scraped? How to scrape putty? Maybe you must also want to know some tips for scraping putty, is there any skill for scraping putty? Next, let's take a look.

Clause. 1. What is scraping putty.

Scraping putty refers to the uneven area of the base surface of the wall by filling or the overall wall treatment, and maintaining the smoothness of the wall.

Clause. 2. How to scrape putty?

If we want to scrape putty well, then we need to understand several construction requirements for scraping putty:

1. First of all, we must choose good quality putty, which is the premise of scraping a good putty.

2. Understand the ratio of putty and water, and then stir it evenly.

3. Clean the base layer of the wall, if there will be cracks or missing corners, we must repair it with gypsum powder, paste cloth or kraft paper. 4. If you scrape putty, you should generally scrape it three times, and when you are constructing, remember to wait until a certain dryness to scrape the putty for the second time.

5. The thickness of the putty scraping should be controlled at about 2mm, and it is best not to exceed this size requirement.

6. If the weather is cold to scrape the putty, the putty will be maintained, if it is not completely dry, it is best to close the windows, this is to avoid the dry wind to dry the putty, blowing cracks.

7. For light polishing, the treatment of yin and yang angles must be vertical and horizontal.

8. When we scrape putty, if we find that there are raised sand particles or other sundries, we should dispose of them in time.

Clause. 3. Tips for scraping putty.

In fact, there is no skill in scraping putty, as long as we carry out construction in accordance with the construction requirements and standards, but some of the following problems need to be paid attention to, of course, it can also be understood as a putty scraping technique:

1. The ratio of water and putty powder.

2. The putty we scraped for the first time is not asking for light but leveling.

3. The putty on the wall is generally required to be scraped three times, but each time the putty is scraped, it is required to be painted again after it has dried.

When scraping putty, you must avoid cold wind blowing directly, so that although it seems that the wall can be blown dry, but in fact it is to lock the moisture of the wall in the wall, if the next step is carried out at this time, when the heating is carried out in winter, the original wall material that is not dry will begin to evaporate and crack, and there will be a "dry crack" situation.

1. For the first time, workers are required to scrape gypsum powder, and the advantage is that it dries quickly, especially in rainy and humid weather. Gypsum has good hardness, good adhesion, is not easy to crack and shrink when dry, good filling power, can block the small eye on the wall, and can no longer appear after drying. If the putty is too thick, it will dry slowly, so the first time you must scrape the plaster, and you must use full glue.

2. The second time, scrape putty, the focus of this scraping is leveling, because the wall is not so smooth and straight, so you need to scrape putty to find peace and straightening, the yang angle must be about 3 meters long aluminum alloy ruler to do ruler straightening, Yin angle must be straightened, so that you can see the edge is the corner, the effect is very good. When it is dry, polish it again, this requirement does not need to be too high, but you must wait until it is dry before you can apply the putty for the third time.

3. The third time, in the case of the second putty is not leveled, do some filling, and carry out a fine scraping, the glue can be light, which can ensure that it is easy to polish and sand in the future, but this time the polishing must be illuminated with a 100W bulb, under the development of the light, you can clearly see the small pits, small eyes and small holes, and repair them in time.

1. Treatment of the base layer: molding, due to various reasons, such as the surface of the concrete wall of the floor slab, material and release agent, the flatness of the wall surface is poor, and there are often some pores, combs, yin and yang angles and hollow drums. Therefore, the phenomenon must be straight, and the grooves must be filled and filled.

The precast concrete slab and the base layer sheet should be brushed by a special human cable to remove the floating sand from the surface, for the gray surface layer of the cement mortar rib, the base layer of the surface is required to be dry and strong.

2. Matrix layer repair: After cleaning the concrete roof and gaps, the gypsum putty is filled and compacted with scraper steel defective large parts, such as honeycomb, and the horizontal surface is scraped and it is scraped once (the smooth top surface can be scraped off). The ratio of gypsum putty (weight ratio) is emulsion:

Gypsum cellulose aqueous solution (concentration 5%) = 100: 5-6 alkaline solution 60Brush Brush Fire:

A concentration of 5% caustic soda solution is 2 times if its concentration is 10%. Rinse off with water immediately after brushing before moving on to the next procedure.

3. The application of adhesive, spraying adhesive, spraying before spraying uniformly: spraying glue, there should be a clear relationship between adhesive (weight ratio) water leakage: emulsion = 100:

15? 20.White putty putty scraping:

The doctor must scrape off with a stainless steel blade, paying attention to the upper and lower, both blades should be clean, no floating putty, caulking or avoiding mixing sand and other debris scraping putty. The proportion of white filler (weight ratio) is large is talcum powder white powder: cellulose solution (concentration 5%):

Emulsion = 60 of the fourth: 75 2 to 4.

4. After the first grinding and scraping putty, you should check and repair, if there is a problem, please use putty to smooth the folded part. After the putty has dried, sandpaper is used for polishing, smoothing and sweeping.

5. Scrape the white twice, wait until the first putty is dry, in the first scrape, it usually needs at least two times to survive, it not only needs the required surface flatness, but also the texture and texture, otherwise, it is easy to appear in the color depth is inconsistent and affect the decorative effect.

That's rightIntroduction to the construction process of wall scraping putty

You can get it for free