Drywall is a modern building and finishing material with which you can implement the most daring decisions in the design of the false ceiling.
Let's consider each of the methods in more detail, additionally highlighting the advantages and disadvantages of each.
Suitable for concrete ceilings. You will need the following materials:
20 by 2, 5 meters, 9 mm wide;
For rooms with high humidity (bath, toilet, kitchen), use only moisture resistant drywall!
Stages of fastening:
We carry out the marking.
Using the level, we determine the height of the ceiling. In all corners of the room, we place points at a distance of about 25 mm from the ceiling - the height of the profile frame. If the design project provides for recessed luminaires, lower the points by another 40 mm. The markings must be done on all walls. Using a paint cord, mark the lines for the guide profile and hangers.
Define the opposite walls. Along them we fix the guides using dowel nails with a step of 15-20 cm. We fix the suspensions on the marked lines of the ceiling with dowels.
As a result, we get a rigid frame for drywall sheets.
We screw the self-tapping screws with a step of 13-15 cm, retreating from the edges of the sheet by at least 10 cm. In the places where two sheets are joined, we must install jumpers from the profile.
If you plan to mount partitions or a heavy chandelier to the ceiling, be sure to reinforce the frame in additional attachment points.
Consider the advantages of mounting with metal profiles:
This method has its drawbacks:
Fastening of gypsum board sheets to a lattice made of a wooden bar practically does not differ from mounting on a metal frame. Markup is also performed. The slats for the frame must be no thinner than 80 mm. There is no need to install the guides.
If a cornice will be installed to the ceiling, do not forget to reinforce the attachment points with additional slats.
The timber is fastened to a flat ceiling with dowels. If there are irregularities on the surface, you need to use suspension mounts. Plasterboard sheets are attached to the frame with self-tapping screws using a screwdriver with a pitch of no more than 15 cm.
The advantages of this method are the following:
Disadvantages of fastening without profiles:
The method of attaching drywall to the ceiling without a frame is becoming more and more popular and involves the direct connection of gypsum board sheets with a ceiling base. It can be used if the ceiling is wooden or consists of SIP panels. There are two ways of frameless fastening: gluing or screwing.
This method can be used for strongly curved ceilings, when the installation needs to be done quickly and to hide cracks.
Before starting work, an adhesive is prepared: half a kilogram of dry bone glue is poured with three liters of cold water and left for 12-15 hours to swell. Then you need to pour a kilogram of lime dough, mix well. Boil over low heat for 4-6 hours, stirring constantly. Finally, add 10 liters of water to the composition.
It is necessary to apply glue on a pre-primed surface.
Let the glue stick to the surface a little, then apply the gypsum board, pressing firmly for several minutes.
Remember to route the electrical wiring under the drywall prior to installation. If the ceiling is wooden, drywall can be fixed with screws. For extra strength, you can apply polyurethane foam to the sheets and fix them to the ceiling.
Advantages of frameless drywall fixing to the ceiling:
Though it is rather difficult, but quite realistic. It is necessary to make special supports from metal profiles, similar in appearance to a large mop. Tighten the GCR sheet first onto the table, then gently lift it up onto your head.
Holding the plasterboard with one hand on your head, bring the support with the other hand, slowly straightening it.
Fix the two supports in the described way and feel free to start attaching the sheets lying on them.
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