New house decoration, wall skin in the end shovel not shovel? Look at the professional master, how to deal with it.

Most people in the renovation of new houses, should encounter the question: "Do you want to shovel the wall?" Do you want to scrape the putty again? "
these two problems often bother everyone. Come and talk to you today about the renovation of the new house, the wall putty in the end do not want to eradicate?
first of all to give everyone a look at science: "wall skin" specifically refers to what?
General indoor brick wall, to scrape "wall", that is, to apply a layer of cement mortar, to the bottom cement mortar naturally dried through, on top of the brush interface agent (interface agent is to increase adhesion), and then scrape putty to find flat, putty thickness is generally controlled at about 2mm, putty dry through grinding and then do the bottom coating, bottom coating. It is commonly referred to as the "wall skin" of the outside part of the concrete mortar on the wall (from putty to latex paint)

.
you shovel the wall?
"shovel wall skin" refers to the eradication of the original wall putty and plaster decorative layer, for the future wall decoration to set a good foundation.
new house wall if the use of putty powder is not good, low glue, long time, putty glue expired after the wall moisture will appear powder off the phenomenon. If the early grass-roots putty does not eradicate the direct scraping putty, the late completion of the house after a heating season or after occupancy, the house will appear cracks, a long time putty may also be large pieces of drum off, such a situation needs to be removed from the wall skin.
old house decoration because the old room stay time is relatively long, some of the wall skin has begun to fall off or powder, the general old house decoration wall skin to be eradicated.
There is also a situation: if the top surface or wall of the underlying material poor quality there is an empty drum de-layering problem, need to be eradicated, the simplest way to test is to use a hammer on the roof or front of the gently tap, if there is a smouldering or peeling must be shoveled!
way to deal with it is to scrape off the walls and the ground floor where the smouldering is smouldering, and if you remove it, you find cracks in the bottom layer.
crack treatment method is: the crack is shoveled into a V-shaped (V-shaped refers to the groove section is V-word, if the crack is small, V-word 30 degrees; if the crack is large, V-word 45 degrees), remove the floating ash inside, and then use interface agent combined with plaster powder to fill the cracks, dry through the paper bandage brush white latex seal and then scrape putty.
in the process of hydropower transformation, the wall will be slotted, slotted position to be finally sealed with cement or gypsum, sealed after the gypsum dried out and the above construction methods consistent.
In both cases, there is no need to shovel the wall skin
now many new houses have scraped the walls of putty, many decoration companies may not ask indiscriminately, all require the original wall of putty eradication, and then scrape putty again. In fact, if the original wall putty is water-resistant putty, it does not need to be eradicated.
The top or wall of the material used in line with the requirements, no empty drum layer cracking and other issues, and putty is water-resistant putty can not eradicate the wall skin, this time to congratulate you, you meet the developer is still more conscientious, so your home does not need to shovel off the wall skin.
can I tell if the original wall is water-resistant putty?
Actually very simple, sprinkle some water on the wall to moisten the wall, with fingernails lightly scraped wet wall, if there is a sticky thing stuck to the hand, it proves not water-resistant putty, to eliminate all, and scrape putty again.
Water-resistant putty will not fall off with a touch of water, if you have determined that the original wall is waterproof putty, you can use a ruler against the wall to see if the wall is flat, if very flat do not need to scrape putty. If it's not flat, brush the interface agent (also known as ") and scrape the putty twice. Putty does not need to scrape too thick, as long as the purpose of flat walls can be achieved, if too thick, it is likely to crack later.
Summary
In short, not all putty should be eradicated, we must first see how the quality of putty, and then decide whether to leave it, sprinkle some water on it, hard scraping will know. If something white, mud-like is scraped off, it means that the putty on the wall is bad and should be removed. If not dropped, indicating that waterproof effect is better, you can consider keeping. General real estate developers to your home to do putty is not very good, just to cope with the inspection or to buy a good price, a long time will crack, powder, fall off.
.