What is a good solution to plasterboard cracks?

Tiedi learns grain cloth, and then batches putty.

The method of repairing the cracks in gypsum board is as follows:

First, shovel off the putty layer at the crack and clean up the debris in the crack; Then the crack is enlarged and the dust inside is sucked off with a vacuum cleaner; Then brush the wet cracks, mix the gypsum material, and apply it to the cracks to keep it flat; Finally, wait until the plaster is dry, sandpaper and brush with primer and latex paint.

How to prevent drywall cracking:

1. First of all, gypsum board should be constructed in a good environment, especially not stacked in a damp and unventilated place.

2. Secondly, when installing gypsum board, it is necessary to strictly follow the construction of the design drawing, and the spacing should not be increased at will. And when installing, it is necessary to pay attention to arching according to the requirements, otherwise there will be uneven force. In addition, the bottom edge of the gypsum board should be at the same horizontal line, and bending materials should not be used.

3. When the gypsum board ceiling is followed, the vertical keel should be kept vertically parallel to prevent its deformation and cracking. And if the gypsum board is installed without stress, it is necessary to avoid forcibly pulling and juggling, and only by tightening the screws of the pressing plate and the skeleton can the support frame be evacuated.

4. Finally, when the transverse joints of gypsum board are made, the joints should be staggered, and the silver should not fall on a keel at the same time, and the joints should be treated by special methods to ensure integrity. In addition, gypsum ceilings will bear a variety of stresses when they have multiple joints, so it is necessary to reserve appropriate gaps and then fill them with caulking materials to maintain its balanced tensile stress, so as to avoid cracking in the later stage of gypsum board.

Mix white latex or polyethylene glue with gypsum powder, but now there are anti-cracking products on the market that do not need to be adjusted, but the ** is relatively high. And the effect is not as good as gypsum powder, fill the gaps after adjusting evenly, and then paste gauze tape on the outside (kraft paper is better than gauze tape, there is a new type of fiberglass mesh belt), and then scrape putty.

First of all, when laying gypsum board, it is necessary to pay attention to control the gap between the gypsum board at 3-5mm. In this way, it is more convenient to deal with the gap in the back. You may wonder, isn't it true that the smaller the seam, the better?

In fact, no matter how small the seam you leave is, there will always be a gap, and it must be processed later. If the gap is too small, it will increase the difficulty of handling. Moreover, gypsum board will expand and contract, so you need to leave some space for it.

If the reserved seam is too small, don't worry. Use a utility knife to cut the joints of the two plasterboards out of a V-shaped groove.

After that, we first fill the gaps with putty powder, remember to compact a little to ensure that the gaps are filled and there are no empty spaces. The height should not exceed the drywall, and the surface should be scraped flat, and there should be no protrusions.

Then use white latex to apply the masking paper to the gaps. In addition to masking paper, you can also use strips of cloth (the best of good fabrics), gauze or special caulking tape. It depends on your choice, in fact, if you handle it well, there is not much difference between them.

Wait until the adhesive masking paper is dry, continue to apply a layer of milky white glue to the surface of the masking paper, which will be more firm. After that, hang the putty again, trying to ensure that the height of the caulking is not higher than the drywall. Finally, remember to sand the surface a little more to ensure that it is flat.

If necessary, you can also apply another layer of latex paint.

This is the normal treatment of the joints of two pieces of gypsum board, and then let's talk about the joint treatment of gypsum board and the wall.

At the junction of the wall and the drywall, we need to make a groove of about 50px into the wall. The plasterboard then snaps directly into the groove when it is installed. After the installation is completed, follow the same method above, smooth the gap with putty, stick the junction with gauze, and then scrape the putty, so that the problem of the gap can be solved.

That's all there is to know about drywall joint treatment, I hope it will help you.

Method: When carrying out the construction of gypsum board ceiling, about 1 2cm expansion joints should be left between gypsum boards, gypsum boards and walls, and the gaps should be filled with putty first, and then double pasted with cloth strips, and then scraped putty. The wooden keel used in the ceiling must be firm during construction, and there can be no loosening, which can prevent cracks in the gypsum board ceiling.

In addition, when bonding the negative corners of gypsum, it is necessary to leave a gap of about 0 5cm with the top surface and the wall surface, and use gypsum powder and latex to reconcile and fill the joints to prevent the gypsum line from cracking.

Gypsum board is a material made of building gypsum as the main raw material. It is a kind of building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire resistance, etc., and is one of the new lightweight boards that are currently focused on development. Gypsum board has been widely used in the interior partition walls of various buildings such as residences, office buildings, shops, hotels and industrial plants, wall cladding panels (instead of wall plastering layers), ceilings, sound-absorbing panels, ground base panels and various decorative panels.

The treatment method of gypsum board joints is as follows: There are three forms of gypsum board wall joints, namely flat joints, concave joints and strip joints. Generally, there are more flat seams, which can be handled according to the following procedures:

1. When the gypsum board is installed, the joints should be properly left (generally 3 6mm), and the groove must be connected with the groove. After the floating soil in the joint is removed, brush a 50% concentration of 107 glue solution. 2. Use a small scraper to embed the wkf seam putty into the plate seam, and the plate seam should be embedded with the embedded solid, and the corrugator should be scraped flat.

After the putty is dry, check whether there are cracks at the caulking, and if there are cracks, analyze the cause and re-caulk. 3. Scrape the wkf putty about lmm thick at the groove of the joint, then paste the fiberglass tape, compact and scrape flat. 4. When the putty begins to solidify and is still in a wet state, scrape another piece of WKF putty, bury the glass fiber tape into the putty, and fill the plate gap and scrape it flat.

There are several factors for the appearance of cracks.

1. Shrinkage of wooden keel.

2. The seam is not properly handled on the keel or the back plate.

3. The keel at the seam is settled.

4. The distance between the self-tapping nails or row nails of the gypsum board fixed at the joints is too far.

Solution, remove the putty, grid or paper tape, caulking plaster at the joint, and check whether there is a problem with the gypsum board. Press with your fingers to see if there is any floating, if there is a nail to be repaired, and then the seams are processed in order.

After the seam is treated, look at it again in two days, and it is basically no problem if it is not cracked. If it is still cracked, there is a problem with the keel treatment on the top, and the carpenter who will decorate your home will deal with it.

First use gypsum powder putty to open the joints, then paste anti-crack tape, and then you can batch putty for subsequent construction. I hope my answer can help you.