How to shave putty without traces

If the home needs to be renovated, of course, it is indispensable to scrape the putty

Scraping putty construction process

01 Basic treatment

For cast-in-place concrete walls, due to various reasons such as floor slabs, materials, and isolation agents, the flatness of the walls is poor, and there are often pores, honeycombs, pockmarks, unsmooth yin and yang angles, and bulging.

02 Basic repair

After the concrete roof and the joints are cleaned, the gypsum putty is filled and compacted with a steel scraper for the larger defect parts such as honeycombs, and the horizontal wiper is scraped up and down (the top surface with a smooth surface may not be scraped)

03 Apply binder (juice paste)

Before scraping the putty, spray a layer of glue.

04 Repair and polishing

After the head putty has been scraped, the first repaired part should be re-examined.

05 Putty survives

Scrape the white putty twice, and then scrape it a second time after the first putty is dry.
Generally, at least two times are required to survive
.
The surface is required not only to be flat, but also to be uniform in texture, otherwise it is prone to inconsistency in color shades, which will affect the decoration effect
.

Tips for Scraping Putty Fast and Flat

1.
First of all, we have to choose putty of good quality, which is a prerequisite for scraping the putty well
.
Know the ratio of putty and water, and then mix it well
.

2.
Clean the base layer of the wall.
If there will be seams or missing corners, etc.
, we should repair it with gypsum powder, or stick cloth or kraft paper
.
When scraping the putty, it is generally three times.
During construction, remember to wait until a certain degree of dryness before scraping the putty for the second time
.

3.
We control the thickness of the putty to be about 2mm, and do not exceed this size requirement
.

4.
If the weather is cold, the putty needs to be maintained, and the cold wind must be avoided.
Although it seems that it can dry the wall, it actually locks the moisture of the wall inside the wall.
If the next step is carried out at this time, when heating in winter, the original dry wall material will begin to evaporate, causing "dry cracking";

5.
The quality of roller brushes is also the key to considering the effect of wall construction
.
Therefore, the roller brush must be good, such as the quality and amount of hair need to be moderate and even, after all, this directly affects the final effect
.

How to shave putty without traces

1.
Treat the wall.
The base layer has the same requirements as the white ash hemp knife covering layer.
The top plate of the wall and the seam of the board should be cleaned of floating ash, and the residual debris and protruding parts should be removed.
, The lintel gap is tightly plugged, and the corner guard is smoothed and troweled with 1:3 cement mortar
.
Make sure that the verticality and flatness meet the requirements of the specification, and the yin and yang angles should be square
.
The bottom ash surface is smoothed with wood chamotte
.

2.
Concrete and mortar walls can be directly constructed when 70% of the walls are dry, and water should be moistened when they are penetrated
.
For serious oil stains on the concrete wall, brush it with 10% alkaline water or washing powder, and then wash it with clean water
.
General oil can be polished with sandpaper
.

3.
For the wall with fast water absorption, it is best to spray it with 1:2 or 1:3 107 glue solution to prevent the gypsum greasy powder from losing water too quickly and causing chalking
.
The gypsum board wall should be wiped with a damp cloth first and then covered
.

4.
For the walls with lime mortar, cement mortar, and mixed mortar as the base, the surface can be covered when the bottom ash is dry to 60-70%.
If the bottom layer is too dry, it should be watered and moistened
.
Generally 2 to 3 days after the bottom ash is applied, the covering can be carried out
.
The top gypsum plaster should be thinly smeared vertically, then horizontally smeared, leveled, and calendered
.
The total thickness of the two passes should not exceed 2mm
.
The yin and yang corners are set with a square ruler, and then pressed with a small press
.
The concrete wall or gypsum board wall is operated by the scraping method, and the steel plate or rubber scraper is scraped twice, and the thickness is 0.
5~1mm
.