The quality of the execution of the thermosystem is an essential factor for long -term comfort. The compromises with regard to the choice of building materials, the right accessories and even the work without a team of specialized workers mean, in fact, the sacrifice of quality.
The installation of a thermosystem on the facade of the house involves the capture of the basalt wool or polystyrene with the help of stickers and special pieces. The choice of pieces is a very important criterion for resistance over the time of the thermosystem. Find out how to choose and how to get dowels on the thermosystem.
6 criteria for the choice of dowels thermosystems
There are many types of Dowels thermosystemsBut not everyone is suitable for capturing basalt wool or polystyrene facades. To make the best choice, consider 6 basic criteria when you go to buy the dowels of the thermosystem:
- The material from which the dowels are made
You can opt for plastic or metal dowels. Plastic ones are ideal for the capture of polystyrene, while for basalt wool, metal ones are more suitable, considering the different weight of the two types of building materials.
Normally, thermal insulating pieces have a diameter between 8-10 mm. The thickness of the pieces is the factor that also determines the thickness of the drill with which the support layer must be perforated. The ideal is to opt for thick pieces, which guarantee a more resistant socket. In general, the thickness of the pieces also influences the price of these products, the most often is more expensive.
The length of the pieces is calculated taking into account the thickness of different elements, respectively the layer of isolation, the truth, the plaster and the depth of penetration into the support layer. In some situations, the pieces should penetrate the support layer of about 6-8 cm. This rule applies in the case of porous surfaces, for brick with holes or in the situation in which the thermosystem is mounted in natural stone.
If we are dealing with compact support, it is sufficient for the pieces to enter a maximum of 3 cm.
To capture the thermal insulation system, the facade of the house is indicated by plastic head dowels. They offer a great advantage, i.e. to prevent the formation of thermal bridges. The simplest (and cheaper, otherwise, otherwise) pieces that have the head of the nail in sight favor the formation of these bridges. Therefore, plastic dowels are recommended for thermal insulation.
Tasselli can be connected to the thermosystem by screwing or beating. Both options have advantages and disadvantages; While screws screwed are more resistant and can be more easily regulated, they have a higher price and require longer time. On the other hand, the pieces of the beating assembly are cheaper and are mounted faster, but have two important minutes: they do not allow the adjustment and can break the support layer. The adjustment may be necessary if the piece has been introduced too much in the cotton layer, in which case it can only be removed by cutting and replaced with another.
Most types of pieces have an expanding area of about 2.5-3 cm. There are, however, dowels with a longer expanding area (6 cm more accurate), which allow better fixation in the support level. The dowels that a wider expansion area are suitable above all for gaps.
Mounting suggestions
- A percussion shop will be used to create holes. In this way, avoid the deterioration of the support layer.
- Tasselli can be attached to the surface or by burial. The second method is commonly used in case of polystyrene, but it can also be applied if cotton has a uniform density. If the cotton is of the type double density (I.e., if the external layer has a greater density than inside), the pieces will be mandatory on the surface.
- The fixation of the pieces in the wool will be partially buried, so that, after spacing, the piece is at the level with cotton. Otherwise, in the paint layer or in the decorative plaster they will be remarkable bumps that indicate the places where the pieces have been mounted.
- In the case of surface installation, dowels are mandatory before applying the space of the space in which the reinforcement network is included. This phase prevents the formation of thermal bridges from the metal nail of the piece and the plastic rosette.
Different the plates of thermal insulation
In general, approximately 5-6 dowels/m2 are needed for the removal of thermal insulation plates. In buildings with high height regime or in the areas exposed to the wind or strong currents, it increases the density and quality of the pieces.
The choice of pieces is made taking into account the material from which the wall is built. Therefore, if we talk about a brick masonry with holes or ceramic blocks, the dowel anchoring area must overcome the thickness of the external wall of the brick. For other types of walls, it is recommended to perform snatch tests.
Diablux scheme of the thermosystem
A basic principle to capture the thermosystem is to use two variants for the assembly scheme. The first variant consists in the design of those intersection points between the vertical joints with the horizontal ones, adding a piece in the middle of each plate. The second option will include three pieces on each plate.
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