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Anonymous users2024-01-24Answer] D [Analysis] There are three levels, the first two levels can be used directly indoors, and the third level needs to be processed before they can be used indoors.
This should be to find the construction party to do compensation. Because the roof is leaking, it belongs to the quality of the house.
The main reason is that the thickness of the negative keel is not enough, the stiffness does not meet the requirements, and the strength of the load cannot be beared. There may also be problems with the main keel, and the thickness and rigidity are not enough, resulting in a large area of the gypsum board ceiling collapsing.
Moldy walls and ceilings may be the result of cellulose used in scraping and coating powder, and the cellulose absorbs water and becomes moldy due to moisture. >>>More
The main keel did not fall, the auxiliary keel came down, that is, there was a problem with the connection between the main keel and the auxiliary keel, and it had nothing to do with the self-tapping screw. >>>More
This may be a broken plasterboard, or there may be no sticker tape at the joint, you can use a knife to scratch off the crack an inch wide, and then use white latex to paste the paper tape, after drying, scrape the plaster, several more times, until it is consistent with the surroundings, of course, if you can sand and paint again.