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Mounting of picturesque facade elements

 Mounting: Types and Methods


The base surface must be dry and clean, free from any dirt or dust.  Depending on size of the parts, properties of the façade surface and on its design features, the following types of mounting are possible: adhesive, mechanical and combined. 


Adhesive Mounting

It is recommended for small façade elements.  When the adhesive fastening, the element is attached to the wall using special adhesives for expanded polystyrene.  The adhesives are cement (mineral) based or polymer based.  The ability to use the adhesive mounting technique is limited by quality of the façade surface and size of façade elements.

 

Use the adhesive mounting for such large elements as big bossage is difficult and time taking, as uneven surfaces must be aligned thoroughly prior to mounting. 

Combined Mounting   

In this case, the façade element is attached with the adhesive with additional fastening wall dowels or pins.  Combined mounting is used for large-scale architectural elements for surfaces with good adhesion characteristics. 


The application of the adhesive cement and mounting of picturesque elements

Adhesive cement for expanded polystyrene is applied to the back of a picturesque element with tooth trowel.  Then, the element is mounted on the base in accordance with the layout.  Element is applied to the surface of the wall at a distance of 1-1.5 cm off the design indicated position. Then, it is shifted to the design position.

 

 Joints Processing


The elastic putty, same material as the one used as a protective layer for outer surfaces of the picturesque elements is used for joints of the picturesque elements surfaces.  Putty is applied with a spatula along the contour of the cross section, of 1.5-2 mm thick.  Consumption of protective coat for joints processing is about 1.5 kg per sq. m. 

To fix the decoration in the desired position, you can use screws, rawbolts, self-tapping screws or dowels, drill the profile through (no electric drill or pneumatic hammer), then tie the element through puck to the facade.


 SURFACE PREPARATION

 

Facade surface of outside wall panels (ground), to which the architectural details are mounted, should be prepared thoroughly.  It should be free from mortar, efflorescence, mildew and other contaminants.  It is desirable to perform this work mechanically, if there is a need - use the special tool. 


The construction ground must be dry and protected from moisture.  If there are any variations in plane more than
1 cm per 1 m2, it should be removed with appropriate mortar. 


The surface is cleaned with a finishing brush or cleaning rag, wet areas are dried.

 

 If there are stubborn oil stains or other surface contaminations, the dirty areas are processed with special compounds to neutralize them.  The old plaster is tapped across the surface and removed, where it sounds void.  Old peeling paint is removed mechanically.  After removing of old plaster, the wall surface roughness of more than 10 mm is restored by plastering and (or) adhesion of the entire wall surface with fiberglass mesh. 

The base strength should be no less than the strength of a plaster layer. 

The prepared surface should be dry, free from dust and dirt, grease and rust stains should be removed, the humidity should be no more than 5%, the surface acceptable tolerance when checking with two-meter rack is no more than ± 10 mm, the number of irregularities in the smooth outline of length 2 m - no more than 2.

 

                                                         

                                                                   Prior to mounting                            After mounting


 STEP-BY-STEP DESCRIPTION OF MOUNTING PROCEDURE - FRAME:

 

 

1. The required working tools: a saw, a brush, a set of rectangles, a hammer, nails / dowels, sandpaper, a tape, a spatula, a notched trowel for applying adhesive mixture. 


2. Mounting surface must be identified and measured.  The edges of the angles must be estimated.  Appearance of the model must correspond to the project, and the corners of the frame should definitely have a 45-degree angle, verified with a set of triangles. 


3. Internal or external corners of the product (element) must be respectively saw-cut.

 

 4. Uniformly cooked adhesive plaster is applied to the back side of the frame with

a notched trowel.


5. The frame is glued to the place specified in the project.


6. The top and side frames must be installed.


7. Chemically glued frames must also be mechanically fastened with nails/dowels at the appropriate places.  Locations of nails/dowels must be filled with mixed glue. 


8. Excessive glue must be removed.  Connections must be reinforced with acryl-based cement mortar.  Any irregularities must be removed by applying with a brush a thin layer of mixed glue.  Any rough edges after drying should be removed with sandpaper. 


9. When the upper and side sections of the windows are finished, it is time to start preparing the model of frame plinth.  The indicator of plinth sides’ smoothness is the integrity of the model, which is ensured by cutting using a polygon on the inside and on the outside. 


10. First, the frame is measured from the front mark to the back side to ensure the 45-degree angle.  Cutting is performed. 


11. Then a measured model of the frame plinth is accurately cut off again.  It is cut off from the front mark to the back side with a 45-degree angle. 


12. As it should look as one-piece figure, the part from the middle section is applied on top of the plinth model, and the integrity of the model is provided by machining.


 EXECUTION OF WORKS

 

The picturesque elements produced according to our technology, could be mounted applying any adhesion used in heat insulation.  For mounting of most picturesque elements, the only adhesive layer is enough. 


Over those details that jut out for more than
150 mm of the base waterspouts made of galvanized sheet steel or other metal should be installed.  Large elements, as well as medium ones must be fastened to the base with mixed glue and dowels, but in difference with medium-size, waterspouts should not be supported with architectural details, they must have their own support structure.

 

 

It is recommended to cover the upper surface of the unshielded architectural details, additionally with water-repellent.

 

Adhesion and surface processing of picturesque elements are considered wet processes.  For mounting of picturesque elements during winter, it is recommended to use a temperature matching curing bath.

 

One of the key components of correct mounting of picturesque elements is a jointing/splicing together.  We recommend applying the same adhesive, which is used as a protective layer.  The thickness of the layer should be 1.5-2 mm. The complete drying time is no less than 48 hours.