Decorative plaster in a building at the first stages is carried out the same as also high-quality. And, hence, and preparation of surfaces is spent by usual way. Obryzg and a ground make also usual solutions. Only nakryzoch th layer - decorative. Its manufacture has the specificity depending on the selected finishing covering (we will speak about it more low in process of analysis of different kinds of decorative plaster).
Under laws majachnoj plasters there is also a preparation of facades to oshtukaturivaniju. proveshivanie walls here becomes complicated necessity of careful check of an arrangement across and verticals of pilasters, corners, corbels, slopes of window apertures and to that of similar parts with which facades are usually rich.
The Raised insistence is shown to rigidity and durability of the bases. After all external plasters are subject to constant influences of an atmospheric precipitation and temperature fluctuations. Take at least such test, as "юсЁрсю=ър" a frost. The hardened solution constantly tests peremenno that freezing, thawing. Therefore solutions for facades a laboratory way test for frost resistance, and try to provide reliable coupling of a ground with a wall and all layers nabryzga with each other.
On the basic plane carefully close up apertures, furrows, hollows. If put woods it is recommended krepit them not to stoppers in a wall, and through window apertures to avoid then stains in places zadelki stoppers.
The beginnings the day before of plaster works of a surface of concrete and brick walls wash out water from a fire engine. Next day, approximately for an hour before drawing of the first layer of a solution, a surface again moisten.
The Preparatory layer - one layer obryzga and one or several layers of earth - can be a miscellaneous and depends on a kind of knitting, a part decorative plasters. But at all variants a surface of last layer of earth which has not got stronger yet, protsarapyvajut combs (fig. 58 see). Grooves should be depth 3... 5 mm on distance from each other 2... 3 see Do it for the best coupling nakryvochnogo a layer with a ground.
Starting drawing nakryvochnogo a layer, it is necessary to be convinced that the ground has definitively hardened - namet should be an equal enlightenment (it usually happens on 6... 10th day).
Can happen that decorative nakryvochnyj a layer for any reason put at a distant day. If the break between drawing of a ground and definitive furnish makes 30 days and more before the beginning of works it is necessary from a plane obmesti a dust and to wash out a wall a strong stream of water.
And in any cases in dry weather a layer of earth for 1... 2 ch to nakryvki it is necessary to humidify plentifully from a spray, and before most nakryvkoj dobavochno to moisten a plane with a spray or at least a brush.
For colour izvestkovo-sandy nakryvochnyh layers are necessary grunty limy structure or with the small additive of cement. For stone plasters the ground undertakes cement to exhaust with the small additive (for plasticity increase). At terrazitovyh plasters grunty should be izvestkovo-cement structure.
The Preparatory layer regularly humidify with water during 4... 7 days, protect from solar beams and a wind. After reliable hardening of its ground before drawing nakryvochnogo a layer will sweep off and wash out water.
Before drawing nakryvochnogo a layer on a facade it is necessary to extend crowning eaves (and at once to cover with its metal peak), and also to finish slopes of window apertures.
For drawing, levelings, smoothing down decorative nakryvki apply the same tools and adaptations, as to usual plaster.
The Thickness of a decorative layer for a solution with fine-grained napolnitelem at a weak relief of plaster should be 8... 10 mm, with medium-grained - 10... 12 mm, with coarse-grained - 12... 15 mm. A decorative layer put in two steps. At relief plasters with nakryvochnym a layer 20... 25 mm put a solution in three steps.
Nakryvochnyj a decorative layer is necessary to moisten some time with water. At a difficult solution it is necessary to moisten a surface daily once during 2... 3 days; at a cement mortal - daily on 3... 4 times a day during 5... 6 days.
To avoid appreciable joints nakryvochnogo a layer on a plane, it is necessary to finish during the day completely the sites limited to any partitionings (corbels, pilasters, window apertures, ledges of walls). If for any reasons it is necessary to interrupt work, without having finished nakryvku to any element concealing a seam the surface at a joint needs to be veiled wet bast mats and, having started furnish continuation, diligently to grind in a new layer to the previous.
Impressive processing conduct in the most various ways depending on what invoice wish to receive (about it it will be more low told).
At the big field of operations apply the mechanised way of furnish of facades decorative plaster.
a Fig. 59. The scheme manual kroshkometa :
1 - the bunker; 2 - a nozzle and a nozzle; 3 - vozduoprovod with an atomizer; 4 - the handle; 5 - the crane
It is possible to put Izvestkovo-sandy decorative plasters in the mechanised way usual atomizers of pneumatic action. Special atomizers are applied to drawing of solutions with large decorative napolnitelem, rastvoromety, kroshkomety (fig. 59).