Gipsokartonnymi can revet with sheets surfaces of walls and ceilings of the closed dry premises. They are not suitable for facing of bathrooms, niches of radiators, smoke channels, and also the surfaces which are exposed to direct humidifying or thermal influence (installation sites of bowls, a working strip at kitchen tables, etc.).
Krepit sheets is possible to brick, ferro-concrete, shlakoblochnym, gipsobetonnym and to other surfaces of walls by means of gluing mastics and screws or nails to a wooden skeleton.
Facing by sheets by means of mastics is recommended to be applied instead of wet plaster at building, for example an individual apartment house, a country house, economic domestic constructions. Use of such furnish is expedient also at repair of premises in old houses where the plastered surface rough, has set of the lagged behind places and cracks. In some cases removal of old plaster in such house and drawing of the new is connected with considerable expenditures of labour and inconvenience of residing for a long time. In these cases gluing gipsokartonnyh on plaster is much more effective than sheets.
After gluing it is necessary to paint, paste over sheets with wall-paper or other film materials.
Fastening of sheets by means of gluing mastics is carried out in two ways - on basic beacons and marks or under a rule. It is better to individual builder to use the first way providing higher quality of the finished surface. It consists of following basic processes: preparation and proveshivanie surfaces, a marking of installation sites of sheets, preparation of mastic for basic beacons and marks, open also preparation of sheets, preparation of gluing mastics, gluing of sheets. Before to start facing by sheets, it is necessary to prepare and provesit a surface how it became by preparation for plaster works. For the device majachnyh marks at proveshivanii walls it is possible to use a waste of gypsum cardboard in the size of an order 30X30 mm and to paste them to a wall on mastic. To regulate height of marks it is possible the plaster solution enclosed under marks. Marks established thus will serve as a support at gluing of sheets, and to guarantee their vertical position. Basic beacons from several marks settle down vertical rows with distance between them of 600 mm; thus the top mark is established at ceiling level, and bottom - at floor level. Vertical rows of marks should have on a line of joining of two adjacent sheets which is defined at preliminary breakdown of a premise.
According to breakdown it is carried out open sheets. For this purpose sheet stack on a table which length is equal to length of sheet, and sharply ground knife by means of a long ruler cut from a face sheet on depth not less than half of thickness. After that sheet break on a cut, and a cardboard from an underside cut (fig. 32).
On the surface intended under facing within the prepared sheet according to the spent marking throw plaster mastic in the form of separate flat cakes in diameter of 10-15 sm and thickness over 1,5-2,0 sm more than a thickness of beacons. Such flat cakes snatch in chessboard order with step 30-40 see Then sheet drive into the corner by means of a rule against the stop in beacons. Drawing of plaster flat cakes on a wall is applied more often in the constrained conditions, for example in narrow corridors. If a premise spacious, it is possible to take advantage of other reception at which flat cakes from plaster mastic put on sheet. For this purpose it stack on a floor or a desktop and put on a surface plaster flat cakes with the maximum distance between them of 30-35 sm (fig. 33). On longitudinal edges of sheet and along the edge adjoining a floor, plaster flat cakes put is close to each other or do a continuous strip. Then gipsokartonnyj sheet put to a wall (fig. 34) and, it is easy pristukivaja a rule, level on level. It is necessary to remember that alignment by a rule make until plaster mastic has seized. After that moment postukivanie can cause infringement of glutinous connection.
a Fig. 32. Work with gipsokartonnymi sheets :
And - warehousing and a resock; - open
a Fig. 33. Drawing of flat cakes from plaster mastic
Basic beacons are better for establishing in advance on all walls. In one of premise corners put gipsokleevuju mastic a continuous vertical strip the in width of 80 mm. On mastic stack a strip of gypsum cardboard in width of 60-80 mm to which strictly vertical position on a plumb is given. In the same way krepjat a strip in other corner of a wall. After that into the top and bottom parts of corners hammer in nails which on a diagonal and horizontals connect a twine. On them intermediate basic beacons from continuous strips with step of 1200 mm are established. Between basic beacons on a wall surface put intermediate marks which will interfere with a deflection of an internal part of sheets.
a Fig. 34. Sheet installation
That between a ceiling and facing of walls there were no big backlashes and cracks, sheets at installation into place should be lifted along a wall upwards and to press to a ceiling. To facilitate this operation it is possible, using the simple adaptation (fig. 35).
a Fig. 35. The adaptation for sheet lifting
For the period tverdenija mastics (40-50 mines) are necessary for fixing sheet rasporkami. For this purpose it is possible to make a wooden frame from reek in the size on sheet and to hold apart it by means of one or two bruskov, established and fixed at an angle to a frame and a floor.
The Way of facing gipsokartonnymi sheets without beacons, under a rule more productive, however demands certain skills. At this way and majachnym the first facing sheet which with special carefulness is established and verified in horizontal and vertical planes is control. Under the edges of the first sheet turned towards the following, put a wide strip mastic so that it acted from under an edge on 45-50 mm. On this layer of mastic paste edge of the second sheet which is established for preliminary put marks in the form of flat cakes and strips. The sheet nestles so that it was in one plane with the first. Correctness of installation is checked by a rule.