A floor arranged according to all the rules representsis a complex structure that includes a rough base, leveling screed, and finishing coating. A special role is played by leveling the floor with a screed, which can be done wet or dry. The latter has become increasingly used in the construction and repair of buildings. Dry flooring technology is otherwise called gypsum fiber board flooring. Having all the necessary materials and tools at hand, making a gypsum fiber board floor will not be difficult even for a novice craftsman.
Scheme of installation of gypsum fiber boards on the floor.
General scheme of the device of a floor from GVL
Gypsum fiber sheets (GVL) area modern building material that consists of fluffed cellulose and reinforced gypsum, has a high density and a uniform structure. Even such a popular finishing material as plasterboard is inferior to it in many key indicators. The general scheme of the GVL floor device looks like this:
Scheme of floor installation using plasterboard.
- surface preparation;
- floor waterproofing;
- leveling backfill;
- GVL flooring;
- finish coat.
The essence of the dry method of floor installation isleveling the floor with some fine-grained material, for example, expanded clay, on which two layers of gypsum fiber boards are installed. After that, on top of the sheets, on a perfectly flat prepared surface, the floor is finished. In order for such a floor to serve for a long time, it is necessary to observe certain conditions:
- backfilling surface must be brought to a perfectly flat state;
- Use only a solid finish coat: laminate, parquet, porcelain stoneware, etc.
In order to fully understand all the intricacies of installing a floor made of gypsum fiber board, it is necessary to dwell on each stage of the work in more detail. Return to the table of contents</a>
Preparing the surface of the floor, materials and tools
In order for the main work to be carried out efficiently, it is necessary to carry out thorough preparation. This includes:
Scheme of dry floor screed using gypsum fiber board.
- Surface preparation;
- correct selection of materials and tools.
First, the old flooring is dismantled.coverings and removal of construction waste. After this, the floor is inspected for various cracks, potholes, crevices and other damage. To eliminate them, depending on the size, small-fraction expanded clay, crushed stone or broken brick can be used. The specified damage must be removed so that subsequently in these places, under the mass of the backfill, the waterproofing would not be destroyed. To arrange a floor from gypsum fiber board, it is necessary to prepare the required materials and tools:
- expanded clay fine;
- crushed stone;
- brick battle;
- polyethylene film (for concrete);
- building scotch;
- parchment (for boards);
- Edgeband tape;
- building level;
- measuring instruments;
- marker;
- lighthouses;
- cord;
- rule;
- gypsum-fiber sheets;
- Screwdriver;
- self-tapping screws;
- PVA glue;
- notched trowel.
After the preparation has been completed, you can begin the main work. Return to Contents</a>
Waterproofing and leveling floor filling
Floor screed laying technology.The next mandatory stage of work is waterproofing the floor. It should be done in order to protect the gypsum fiber board and the finishing coating from harmful moisture. If the base of the floor is made of concrete, then polyethylene film is well suited as a waterproofing agent, and if the base is made of boards, then parchment can be used. All waterproofing material is laid with special care, with an overlap of strips of 10 (cm) and with its bending onto the walls. To fix the strips of material, you can use construction tape. To improve sound insulation, an edge tape is glued along the entire perimeter of the room. Using measuring tools, a cord, a marker and a building level, limit marks are made on the walls, which should be used as a guide when backfilling. The thickness of the leveling backfill will depend on the unevenness of the subfloor and can be up to 6 (cm). Prepared bulk material, for example, expanded clay, is poured onto the floor and leveled using a rule according to the marks on the walls. Instead of expanded clay, fine-grained slag, quartz sand, expanded clay production screenings, etc. can be used. All of the above materials have good flowability, high porosity, and low hygroscopicity. It is important to dry the floor backfill material well before use to avoid unwanted deformation of the floor. Return to Contents</a>
Flooring of gypsum fiber sheets on the floor
For flooring, two layers must be used.gypsum fiber sheets. Special gypsum fiber sheets are also produced, glued together with a slight offset. For floor sheathing, it is best to use small-sized gypsum fiber sheets measuring 120 x 60 (cm). Laying the first layer of gypsum fiber sheets on a dry screed begins strictly from the doors, otherwise the leveling backfill will be disturbed. It is forbidden to walk on the screed during work. It is important to achieve evenness of laying so that the sheet does not go deep into the backfill. The second layer of sheets is laid with an offset of joints of about 20 (cm) using the bricklaying method. The sheets of the first and second layers are glued together with PVA glue applied to their surface with a notched trowel. As a result of the offset arrangement of the sheets, there is space for fastening them together using a screwdriver and self-tapping screws. It should be noted that the self-tapping screws are screwed in every 15 (cm) along the entire perimeter of each sheet. Their caps need to be sunk into the surface of the material. After laying the gypsum fiber sheets and securely fastening them together, you can begin installing the finishing coating. Thus, the GVL floor is a perfectly flat surface obtained in a quick, clean and convenient way that even a beginner can handle with his own hands.</ ul>
