How to make a semicircle from plasterboard?When choosing a room design, many people ask this question if they are doing the repairs themselves. Despite their appearance, plasterboard sheets can be bent at almost any angle without damaging the integrity of the building material. The main thing is to follow some recommendations from experts. In addition, there is now a special arched plasterboard, which is initially designed to be subject to deformation, and therefore it bends easily.
To create an arch from plasterboard, you need to know how to bend it correctly.
Required Tools
To work on bending plasterboard sheets, you will need the following tools:
- stationery knife;
- Needle roller;
- ordinary roller or brush;
- water;
- self-tapping screws.
It is worth noting that, regardless of the chosen bending method, the sheet should be bent lengthwise, not crosswise. Return to contents</a>
Methods of flexing the plasterboard
Tools that may be needed whenbending drywall. If you decide to make an arch or a column in your apartment, then the best material for its manufacture will be drywall. Its installation does not require special tools and skills. The best type of gypsum board that the construction market offers is arched drywall with a thickness of 6.5 mm. But, due to its high cost, its use is not always advisable. Do not be upset. Ordinary sheets of drywall can also be bent, the main thing is to do it correctly. There are several ways to bend gypsum board:
- dry method without cuts;
- dry method by means of notches;
- wet.
If a small bending radius is required, it is easierIt is best to use the dry method without making cuts in the sheet. Drywall cut to size is applied to a pre-prepared frame of a column, arch, or other object. It is secured at one edge with screws and slowly bent to the shape of the profile frame. The sheet will gradually begin to deform without breaking. When the radius of the bending angle matches the frame, the drywall is secured. To avoid breaking the sheet, it is worth knowing: the smaller the bending radius, the thinner the drywall used should be. The dry method of bending with cuts is used if the modeled surface has a “steep” bend.
Dry and wet bending diagram of plasterboard.In order to make a semicircle from plasterboard, you need to use a stationery knife with a thin blade. With its help, deep cuts are made at the place of bending the canvas, along the entire length of the sheet. The width of the step between the cuts can vary from 1 to 5 cm. The step depends on how much you need to bend the sheet. The greater the bend, the smaller the distance between the cuts. They are made on the side of the sheet that will be convex. If it is an arch, then cut the back side, if the convex wall (column) - the front side. It is necessary to cut the canvas almost completely, leaving 2-3 mm to the cardboard base. The recesses from the cuts that are formed during bending are sealed with gypsum putty. The wet bending method will allow you to bend the gypsum board smoothly. In addition, the surface of the sheet will not be deformed by the cuts, which removes one of the stages of work - sealing the cuts. Before making a semicircle, it is necessary to perforate the side of the drywall that will be convex. To do this, use a special roller with metal needles. They process the entire surface of the sheet, and then, using a regular roller or brush, moisten it with warm water. Through the punctures, the water will penetrate to the gypsum core and soften it. The soaking process takes 15-20 minutes. It is worth considering that only one layer of cardboard and gypsum should get wet, the back side should be dry. As soon as the drywall becomes plastic, it must be given the desired shape and secured with screws. The process of complete drying occurs in a day, after which the GKL returns all its original properties.</ ul>
