For facing of slopes and niches do preparations of gypsum cardboard strips. From sheet cut off a strip in the width equal to the sum of width of a slope and width of that part of a wall where the strip will come. Then on a place of a bend of a strip do a cut, preparations bend, moisten edges and remove facets. The prepared strips paste on mastic.
For facing zakrugleny small radius which quite often meet in old apartments, in a cardboard layer of sheets do cross-section cuts with step of 2-3 sm on the party which at facing will be stretched. Differently, for concave surfaces cuts do from outside, turned to a wall, and for convex - from a face sheet. The sheet prepared thus bend according to the wall form. Thus the plaster layer in places of a cut of a cardboard bursts, allowing that to receive the necessary form.
There is other reception of reception curvilinear gipsokartonnyh sheets. In this case sheet humidify, for example cover a damp sacking, and maintain in such condition 10-12 ch. The sheet humidified thus at applying to a curvilinear surface gets its form.
If in the course of facing gipsokartonnymi sheets had been found out defects of an obverse surface - dents or holes, such places it is possible zashpatlevat plaster mastic. Holes of the considerable sizes close up a gypsum cardboard piece. For this purpose on a hole impose a tracing-paper and lead round a pencil a contour of the damaged site. Then a knife or a saw cut out a piece of the necessary form, impose on its back party a plaster solution or mastic and insert into an aperture of the damaged site. After that carefully shpatljujut seams plaster mastic.
Mastics and gluing structures for priklejki sheets, and also for shpatlevki joints between them prepare on the basis of plaster with inclusion in structure various napolnitelej and the additives which are slowing down shvatyvanie. Most widely applied concern gipsokleevaja, gipsoopilochnaja and other mastics.
Gipsokleevuju prepare mastic so. In 2,5-3 l of water presoak 1 kg of dry animal glue. After it razmoknet, add 1 kg of the limy test. A mix cook on slow fire, carefully mixing. The received weight plant in 10 l of water and this structure shut plaster. Term shvatyvanija 40-50 minutes
Gipsoopilochnaja mastic includes 1 part (on weight) plaster, 1-1,5 parts of wood sawdust and water with izvestkovo-glutinous zamedlitelem shvatyvanija. It prepare as follows: plaster carefully mix with sawdust and shut glutinous water (on 2,5 l of water 250 g glue). Water with izvestkovo-glutinous zamedlitelem shvatyvanija is added to the necessary consistence.
The structure sulfitno-spirit mastic includes 1 kg sulfitno-spirit bards, 4 l of hot water and plaster which enter in the quantity providing a working consistence of gluing mastic, reminding dense sour cream.
Gipso-izvestkovo-glutinous mastic is made of plaster and water (on 1 kg of plaster of water of 0,5 l) with addition mezdrovogo or bone glue - 20 g, the limy test - 0,5 kg and small sand of 1,5 kg.
Term shvatyvanija such mastic - It is used 40-50 minutes for shpatlevki joints.
Facing on a wooden skeleton with the help screws and nails consists of such operations: a surface marking, the device of stoppers, installation and fastening of a wooden skeleton on beacons, preparation and razrezka sheets, installation and fastening of sheets.
The premise Intended under facing is necessary for marking preliminary to define demanded quantity of sheets, their sizes on width and length, the sizes dobornyh sheets, an installation site of a skeleton and stoppers or djubelej for its fastening. The skeleton for fastening of sheets is made from bruskov by section 15X50 mm which are beaten to stoppers along walls with step on height of a premise 50-60 Bruski see should be antiseptirovany kremneftoristym sodium or hlordanom.
Stoppers for fastening bruskov are established with step of 80-100 sm on length of a wall. For stopper installation in a wall from a brick, a stone, gipsobetona, etc. (An exception ferro-concrete and wooden walls make) a chisel beat out a nest in the size 35X35 and depth of 45-50 mm. The nest should extend inside that the wooden stopper of the pyramidal or conic form kept in a wall is better. The nest is necessary for washing out well (it is possible a rubber pear). The wooden stopper moistened in water in length of 40-45 mm, bolshee which basis is equal 30X30 mm, enter the wide party into a nest filled with a plaster solution. Surpluses of a plaster solution delete, and an acting part of a stopper cut.
Nests for stopper installation make the way also with the help shljambura in diameter 30-35 mm. It can be made most of the pipe piece which one end is necessary for making gear by means of a file.
In a concrete wall of a nest for installation of stoppers are made by an electrodrill with pobeditovym a tip and a punch (or a chisel) which should be used alternately. Stoppers in a concrete wall should be established on a cement-sandy solution of structure 1: 3.
To a wooden skeleton sheets krepjat the zinced nails with wide hats or screws. Nails have on sheet perimetre through 400 mm, receding from an edge on 10-20 mm, and also in the middle of sheet through 600 mm. Joints between sheets, and also to walls close up places of an adjunction of sheets gipsokleevoj shpatlevkoj. If sheets have the pressed out edges seams close up mastic zapodlitso with a surface of sheets and after drying paste over with a paper tape or a gauze on glue KMTS. Then them shpatljujut also grind an emery paper. At sheets without the pressed out edges before zadelkoj joints on their longitudinal edges cut off a cardboard in width to 6 see On an open surface of plaster put a layer shpatlevki, paste a strip of a gauze and again close shpatlevkoj.
Screws or nails in the middle of sheets also paste over with a paper tape or a gauze and shpatljujut. The surface prepared thus paste over with wall-paper or paint.
On a wooden skeleton, and also on majachnym from gypsum cardboard it is possible for strips krepit the sheets preliminary finished with wall-paper, film or rolled materials. It can be as sheets of factory manufacturing - "-хъюЁ" and the sheets prepared in house conditions. For pasting by wall-paper and films 1200X3000 mm cut sheet in the size on two and break. If edges of sheets have turned out not absolutely equal, they can be processed a plane and an emery paper. After that an obverse surface gipsokartonnogo sheet ground and paste over with wall-paper or films. Thus raskraivat materials it is necessary so that they came on the back party of sheet on 50-70 mm.
The Obverse surface gipsokartonnyh sheets sometimes paint oil or nitropaints. For reception of the rough invoice on a layer of the damp paint it is possible to sift a coarse sand through a sieve and again to coat. For the same purpose use melkodroblenyj a stone with diameter of grains 2,5-5 mm.
If edges of sheets equal and at joining the thin, equal seam turns out, decorative panels can be fixed by means of plywood overlays in the size 100X300 the mm, attached to their back party short screws (on length of sheet from each party fix usually four overlays). Sheet put to a wall and overlays of the right party nails or screws krepjat to a skeleton. The following sheet establish so that its overlays (they are displaced concerning overlays previous) enter for the back party of the first sheet.
Instead of a wooden skeleton it is possible to use strips of gypsum cardboard in width about 10 of 600 mm see After proveshivanija surfaces above and in the bottom of a wall a plaster solution in the beginning krepjat horizontal strips, and then vertical with step. Between horizontal strips and floor and ceiling surfaces it is necessary to leave backlashes in 2 see On the attached skeleton from gipsokartonnyh strips gear shpatelem apply a thin film plaster gluing mastic. Then bring sheet, press its rule to gipsokartonnym to strips and if it is necessary, level.
If rough, seams between sheets it is possible to cover edges of sheets with wooden laths of a various configuration.
It is necessary to remember that at facing by any of described above ways between sheets of gypsum cardboard and a floor it is necessary to leave a backlash equal of 2 sm which is created by linings from scraps of gypsum cardboard and wooden reek.
Apertures for installation of switches and sockets cut out narrow procarved nozhovkoj. However, if it is a lot of apertures, for work acceleration it is possible to use a special nozzle for a drill in the form of a gear crown in diameter equal to diameter of an aperture.
Electricity cables are laid on walls in the usual image. All boxes for installation of switches, sockets and other electroarmature establish in proper places and fix a plaster solution so that after facing of walls of edge of boxes were in level of a plane of sheets.
a Fig. 36. Ceiling facing gipsokartonnymi sheets
Facing of ceilings is carried out in the same sequence, as walls. However during fastening sheets are necessary for pressing T-shaped support (fig. 36), having them from end faces on the distance equal to a quarter of length of sheet. The support rack should be on 20-30 mm of more height of a premise that will allow to press densely sheets to a ceiling.
At work with gipsokartonnymi sheets it is necessary to remember that they can be damaged easily. Therefore at a resock and warehousing of sheets it is necessary to be careful.