Zadelka of seams between plates of overlappings. At the device of overlappings from ferro-concrete plates between them there are seams. Before zadelkoj it is necessary to prepare them. Seams clean steel Brushes or notch chisels. Then a crack between plates fill with a tow and condense so that it did not reach an obverse surface on 15-20 mm.
The Tow can be applied and dry, but is better it to moisten in the liquid plaster test. For this purpose the plaster dough prepare in the small portions. A tow well condense. At tverdenii plaster extends and presses a tow to walls of plates even more.
Then seams between plates cover with an izvestkovo-plaster solution zapodlitso with plates, level and rub clean. That sedimentary cracks between plates were less appreciable, carry out rust, giving to a seam the necessary form.
There are two ways of reception rustov. The first consists that on the jammed, slightly seized solution rust cut the special tool - rustovkoj, which it it is easy for making (fig. 77. The second way consists in vytjagivanii rusta on fresh, not seized, to a solution with application of the elementary templates (fig. 77,) which produce from a board of the necessary width which has been cut off on the one hand at an angle 45 °.
That rusty were rectilinear, them carry out by a rule which krepjat to a ceiling by means of two-three thin reek on 10-15 sm is more in the length than premise height (fig. 77. Rejki put naklonno on a floor and press them the rule ends, and then additional rejkoj prop up the rule middle. Rejki thus are a little bent, spring and strongly press a rule to a ceiling. Rustovku conduct by a rule, cutting rust. If rust insufficiently pure, it correct poluterkom. Sometimes on rustu spend poluterkom with reechkoj, beaten to its cloth. Reechka should have the form rusta. Preliminary all moisten with water, paternal rust becomes purer.
Vytjagivanie rustov is carried out by a template in stages, a solution put thin layers. After prorezki or vytjagivanija rusta a rule remove and carry out zachistku and zatirku. Rust should be precisely against a seam between plates.
Instead of an izvestkovo-plaster solution apply cement, but process of performance is late because of technological breaks as it is necessary to give time to a solution on shvatyvanie a little.
Zadelka of seams between gipsokartonnymi sheets. as though precisely established sheets, between them there are seams. Them is better to close up the same mastic on which the label was spent. It is possible to apply plaster knitting, shut on 3%-s' glutinous water, or semioil shpatlevku. Before shpatlevaniem it is recommended preliminary proolifit seams.
Seams happen opened and closed up zapodlitso to a surface of sheets. Seams embroider through 3-5 sut after facing when mastic will dry up.
If sheets krepjat to a wooden skeleton, seams undress in the next ways. The first way (fig. 78. Brusok 1 on which sheets are joined, smear with mastic. On mastic 3 paste strips of a cardboard 2. On a cardboard strip again smear mastic and to it press sheets, leaving between them a backlash. A backlash fill with mastic and cut off shpatelem zapodlitso with a surface of sheets. Then a seam shpatljujut also smooth out. A cardboard paste to warn formation of cracks in the area of a seam. This kind of cutting of seams is applied both under colouring, and under pasting by wall-paper.
The Second way (fig. 78, 6). On brusok 1 smear a layer of mastic and to it press sheets. Mastic in a seam level zapodlitso with sheets or embroider a fillet. This way is less labour-consuming, than previous, but the crack in the area of a seam in this case can be formed. A seam close wooden shtapikom which strengthen nails or screws (fig. 78. This variant of cutting of seams apply only to the surfaces which are subject to colouring.
When sheets krepjat on mastic to designs stone and similar to them (fig. 78, in the area of a joint mastic put a continuous strip. The mastic squeezed out from a seam compare zapodlitso or embroider. Often under seams podklady-vajut the strips cut from gipso-cardboard sheets. Strips paste on a surface mastic, and then to them paste sheets (fig. 78,). To make seams imperceptible, from an edge of one sheet remove a strip of a cardboard in width of 20-30 mm, and from an edge of another cut off the same width a strip of the plaster core but so that there was a cardboard strip. After fastening of sheets by mastic or nails the remained strip of a cardboard smear with joiner's glue and stick with it a seam (fig. 78,). The given way basically apply to cutting of seams on the ceilings which are subject to colouring.
Sheets with the pressed out edges (fig. 78, krepjat on mastic. The mastic which has been squeezed out from seams, compare. After its drying seams shpatljujut. On shpatlevku often paste a paper or gauze strip. Then this place once again shpatljujut zapodlitso with sheets and after drying grind. If the seam remains opened, it fill shpatlevkoj completely or half (fig. 78, and,). Seams can be closed shtapikami 4.
That seams have turned out equal and smooth, they are recommended to be undressed with the help rasshivki (template) which move by the strengthened rule. Superfluous mastic from an obverse surface of sheets delete otrezovkoj or steel shpatelem. All roughnesses smooth out a skin.