Did putty and latex paint be brushed twice or three times? Are there any standards?

Putty and latex paint are used in every home decoration, but few people understand how many times to do, because some people say twice, some people say three times, there are four times five times, in the end there is no standard?
1, putty thick
putty is usually putty powder with water a toned, putty powder and water ratio is usually 2:1, water plus more and less will affect the number of late scrape putty. However, this ratio is not absolute, depending on the experience of the mud workers themselves, as well as the quality of the putty.
2, wall flatness
Putty in the end scraping several times depends on the wall flatness, if the previous wall cement mortar to find flat to do a good job, then scraping putty when basically both sides are enough, but if the wall adsorption force, flatness is very poor, then brush three or four times is also very normal . The same is true of latex paint.
So to save putty powder, it is best to find the wall flat when the initial demolition, otherwise don't blame the mud workers over and over again to give you putty.
3, there is no national standard
acceptance house has national standards, but scraping putty is really not, if you brush the home twice is enough, then if the national standards to brush three times, can you?
is usually to scrape twice, three times may be uneven walls, or there is a need to repair the place. If your worker tells you to brush the third or even the fourth time, don't think people are pitting you, lie to you, because he scraped twice can not achieve good results is not able to hand over work, so will give you more brush.
the latex paint brush a few times depends on its coverage, light color can brush a few more times, dark color once or twice is enough. As the owner as long as the last time to check the quality of construction can, can not let him come back, finished you care about him brush a few times.