Dowel-fungus for insulation - the types and features of use

Dowel-fungus roll insulation materials - is widespread in everyday life the name of the front fixings for insulation, which are used for mounting of heaters as the outer and the inner surfaces of the walls of single-storey and multi-storey buildings.

Dowel-mushroom with a thermal head

In this article you will learn what are the kinds of anchors such as fungus, how to calculate and select the clips for thermal insulation, as technology attachment of plate heaters with their help will be discussed in detail.

To meet the needs of the construction sector currently produces three types of anchors such as "mushroom":

  1. Fasteners for insulation with a polymer with a nail;
  2. With a metal nail;
  3. With a metal nail and thermal head.

polypropylene, polyamide, or nylon can be used for fabrication of plastic dowels. The main advantage of polymer anchors is a low price, but the strength characteristics of such products is poor.

Plastic anchors can be fastened to strong insulation surfaces made of concrete or brick, but they are not suitable for fixation of heavy insulation in the hollow walls or surfaces of the foam concrete.

The average cost of a dowel for heat insulation facade panels with insulation polymer nail is about two rubles per 1 share.

Dowel-nail fungus with a polymer

Metal dowels in order stronger than polymeric counterparts, but their use is limited to high thermal conductivity metal which degrades the overall efficiency of the insulation.

Metal plugs form thermal bridges - the elements of which the thermal conductivity of the worse differs from the thermal conductivity of the entire structure.

Dowel with a metal nail prone to corrosion in operation they can form in the stucco facade of yellow rust stains.

The average cost of dowel with a metal nail is 3.5-4 rubles.

Dowel with a thermal head - a widespread alternative to metal dowels. They are based on all the same steel nail, but it is covered with a cap material of low thermal conductivity.

Typically, the coating is used as impact-resistant polyamide having a thermal conductivity of 0.027 W / mK, which is comparable with a similar characteristic of most popular heaters.

A metal nail completely recessed into the resin cover, whereby a plug is not afraid of moisture and does not corrode.

The cost of manufacturing a thermal head on the mineral wool insulation Tehnoblok ranges from 4 to 6 rubles per 1 piece, depending on the manufacturer.

Dowel-mushroom with a thermal head of the polyamide

1.4 Features of calculating the amount of

To ensure a secure fit of insulation is necessary to use high-quality wall plug-fungi, the need to calculate the required dowels correctly. This can be done using the following formula:

D = T + K + I + Z, wherein

  • T - thickness of insulation used;
  • K - Thickness of adhesive used for fixing the insulation panels;
  • I - the length by which the fungus has to go into a wall (not less than 4.5 centimeters);
  • Z - optional value, which is used in the case of deviation from the vertical wall is used as necessary.

Typically, to attach facade Penoplex panel when the decoration of the coated foam or foam, thickness 5 cm, using dowel-fungus 10.5 centimeters in length.

The length of the anchor dowel with which a heater is attached to the walls of brick or concrete marks M100, M200 and M300, must be 50 mm. If the heater fixing is performed to the walls of the hollow brick or foam (aerocrete, concrete blocks, cinder blocks) must be used with anchor fasteners 100 mm.

Choosing a dowel for fastening insulation fungus, consider advantages and disadvantages of the material from which it is made.

Mounting dowel-type "mushroom

Dowel-nail fungus of polyamide:

  • Pros: no cold bridges constitute, as it has low thermal conductivity; not afraid of moisture and corrosion;
  • Cons: has a low strength, which does not allow the use of such dowels for fixing insulation on facades of high-rise buildings. The same disadvantages are anchors for insulation with plastic nail.

In general, the anchors with a nail made of polyamide suitable for attachment of plate heaters heaters with a low density of the walls of brick or concrete.

Products with a metal nail:

  • Advantages: high strength;
  • Cons: fear of corrosion, worsens the thermal insulating properties of the insulation, as forms of cold bridges.

Dowels with a nail made of metal can be fixed any density insulation - mineral wool, expanded polystyrene foam, as usual, and to the hollow walls of brick or concrete.

Dowel with mushroom polypropylene nail:

  • Advantages: low cost, low thermal conductivity, which prevents the formation of cold bridges; not subject to corrosion;
  • Cons: strength.

The scope of operation of the anchors with a nail fungus is similar to polyamide.

Products with a thermal head:

  • Advantages: high strength, is non-corrosive, do not form thermal bridges;
  • Cons: The price of both the anchor plate

Plugs with a metal nail whose head is covered with insulating polypropylene are versatile one, by means of which any can be attached to any surface insulation.

Different types of anchors for insulation

2 Features thermal insulation installation

Technology mounting any slab insulation - Styrofoam, Styrofoam or Penoplex, dowel-type fungus is identical. All insulation works, in fact, be reduced to the following algorithm:

  1. Preparing to warm the surface;
  2. Installing insulation panel for adhesive solution;
  3. Fixing plugs panels;
  4. Processing of insulation joints;
  5. Installing the insulating film;
  6. Sheathing thermal insulation decorative material, or plastering.

Before installing the insulation is necessary to prepare the surface - to remove plaster, cement the cracks and irregularities, degrease.

Further, polystyrene foam panels, foam or Penoplex planted on a special adhesive composition which contains no organic solvents - toluene, and acetone. When mounting adhesive mixture should be evenly distributed across the back surface of the insulation.

To avoid shifts insulation under its own weight under the first row of panels installed metal profile that assumes the support function.

At the expiration of days required for the drying of the solution, fungi are used for additional fixation of the insulation.

Drilling holes using a drill with a diameter equal to the diameter of the legs, the length of the opening must be larger than the length per centimeter dowels to secure fixation does not interfere in the aperture gathered dust.

Stages bolt in place insulation

Building codes determined by the following standards for the number of dowels used:

  • For fixing insulation on interior walls or on the facades of single-storey buildings on each square meter of insulation you need five pieces - 4 at the corners and one in the center of the panel;
  • For mounting on the corners of buildings - 6 pieces (fungi are set parallel to each other);
  • For mounting on building facades, height of 8 to 20 m, it is necessary 7 pieces per 1 m² insulation (parallel + 1 in the center);
  • For mounting on the facades of multi-storey buildings with a height of over 20 meters - 9 pieces per square meter of insulation.

Fungi are best placed on the joints of panels of foam plastic or Penoplex, because this method does not lead to a significant increase in the holes in the insulation, which have a negative impact on its effectiveness.

If mushroom plug must be installed to the metallic coating of sheeting, is secured to the leg of screw anchors, whereupon it is extruded insulation so that the screw has reached insulated surface.

Thereafter, using a power screwdriver with a tip of the anchor is screwed into the screw metal. The depth of the hole for the screw should be at least 10-15 mm.

Thermal insulation fastening completion of joints between the foam panels or Penoplex, glued aluminum reinforcing tape. The joints between the floor or ceiling, and adjacent panels are sealed with foam.

Calculate the insulation of their homes

Smolensky Alexander Pavlovich

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Friends advised to insulate the bath to use Izospan. I live near the shop "Barn-stroy9raquo ;, respectively, primarily for insulation, I went to get it. Consultants helped me choose the right size and shape of the insulation, for which a special thank you to them.

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Fungi for fixing insulation: types and installation technology

Fungi for insulation fittings are common in everyday façade fasteners, are used to install insulation to the inner and outer surfaces of the walls and low-rise buildings. Before choosing such consumable items should be familiar with their varieties, as well as technological features.

In order to meet the needs of modern construction sector, today made three kinds of fungi to install insulation. Among them - the fixing polymer with a nail, metal, and metal nail with a thermal head.

Plastic anchors, for example, made of polyamide, nylon or polypropylene. The main advantage of these products acts as a low price, but their durability leaves much to be desired.

Characteristics of plastic dowels

Plastic molds for insulation fittings are intended for the installation of thermal insulation on the surface of brick or concrete, but they can not be used for heavy heaters on hollow walls or surfaces of the foam concrete. Today, the cost of such fasteners for insulation polymer nail roughly equal to two rubles per share.

Features metal molds

Metal dowels stronger as compared with polymeric counterparts, but their use is limited to quite impressive thermal conductive metal, which may be detrimental to the efficiency of thermal insulation. Metal molds for mounting a heater capable of forming cold bridges which are areas with a fairly high thermal conductivity. Plug with metal nail can corrode during operation, and if the installation was carried out in plaster facades, the surface can be covered with yellow spots of rust. Pay for one such plug with metal nail will have about 4 rubles.

Characteristics fungi with a thermal head

Fungi for fastening insulation that have the thermal head, distributed alternatively metal dowels. At their base steel nail, but the cap is coated with a low thermal conductivity metal. In the role of shock-resistant polyamide coating is used, the thermal conductivity equal to 0.027 W / mk, this parameter can be compared with a similar quality of a large number of popular heaters. Among other things, a metal nail is in the so-called polymeric sheath, which is why the plug is not exposed to moisture and corrosion. However, to pay for all these qualities have higher price products with a thermal head can vary from 4 to 6 rubles. for one thing, the final cost will depend on the manufacturer.

When fastened to the wall insulation to fungi is important in the first stage to calculate the required length of the consumable items. Thus it is necessary to follow the rule that involves the use of the formula: D = T + K + I + Z. It value T - is the thickness of the applied insulation, whereas K - is the thickness of the adhesive layer, which is used to strengthen the insulation panels. The length by which the anchor will deepen in the wall, denoted by the letter I, this value can not be less than 4.5 cm Finally, Z -. Is the amount which is applied at a deviation from the vertical wall. It should be used, if necessary.

If the fungus will be used by you for fixing the heater, the cost of 1 square meter you must be defined. To do this, use the building regulations. For fixing insulation on interior walls or facades of single-storey buildings on the square meter of insulation necessary to use four fasteners, each of which is located in the corner. In this case, you need to add one in the center pane. If we are talking about the corners of the building, it would take more than 6 fungi, which are installed parallel to each other. To install the insulation on the facades, whose height starts at 8 and ends 20 m, required 7 per square meter. If you have to work with a facade of a multi-storey building, whose height is more than 20 meters, the per square meter of insulation will be required to spend 9 fungi.

If you need a heater for fixing fungi, buy in St. Petersburg the consumables can be of varying value. For example, in the case of the dowel, the dimensions of which are equal to 10x100 mm and the nail has a polypropylene coating, the per unit price will have to pay 2.39 rubles. If the length is increased to 160 mm, the dowel for heat insulation will cost 5.68 rubles., While it will have a metal nail. Fasteners with nylon nails at 120 mm length will cost 3.86 rubles. Fungi for fixing a heater, length of 120 mm, are 6.27 rub. In this case there is a thermal head and a metal nail.

If you are interested in a kind of fungus, which has a metal nail and the thermal head, the mounting length may be equal to 160 mm, in which case the price is increased to 7.74 rubles. At the same length, but the polypropylene nail price will be equal to 2.94 rubles. Buy fungi for attaching insulation in Moscow can be of the same value, if the length is increased to 200 mm, and a nail is a metal, then for 1 unit will have to pay 7.79 rubles. If necessary, you can find a metallic nail, which has the form of dowels with a length of 220 mm, and the price is equal to 9.82 rub. Such fungi for fastening insulation "Tehnonikol9raquo; also fit, they can be used and the length of 140 mm. If the nail is covered with polypropylene protection for the plug will have to pay 2.67 rubles.

Whatever the insulation you may have been used, whether it is foam, polystyrene or penoplex, material mount technology using dowels to be identical. First insulation is prepared, then installed on the panel adhesive solution, and the next step is performed fixing dowels. We should not forget the need for treatment of joints, as well as the installation of an insulating film. At the final stage of finishing sheathed with insulation material or plastered. Before installing the insulation is important to prepare the surface, remove the plaster and seal the bumps and cracks. In order to increase the adhesion of adhesive quality, the base wall degreased. Panels foam, styrofoam or Penoplex sit on the adhesive composition which does not contain toluene or acetone, and other organic solvents. In order to eliminate the shift insulation under its own weight under the first row of tiles to be laid metal profile. Once the solution dries, it is possible to carry out additional fixing fungi. Required for their installation holes for breaching drills which use the same diameter fastener legs. Whereas the length of the opening should be larger than the length of dowels per centimeter, it would eliminate the unreliable fixing when openings within the gathered dust.

Fungi should be located at the junction of the panels, as this will not cause an increase of holes in the insulation, which may adversely affect the efficiency of thermal insulation layer. If the fungus is to install a metal coating, then to its pedicle screw to be fixed, after using it in the extruded insulation fasteners to screw reached uteplyamoy surface. After using the screwdriver is screwed into the metal dowel and the screw hole depth should be approximately 15 mm. After the installation of thermal insulation panels formed between the insulation joints need to glue reinforcing aluminum tape.

Fungi for insulation fittings: 5 main advantages

An important element with insulation walls - a fungus for mounting a heater to perform the heater fixture as mineral wool, foam insulation and other sheet using special device, which have the shape of fungi. For high-quality fasteners in these cases, the force of friction of the plastic mold with the wall. And due to the fact that with the help of fungi fasteners can be done once, it is necessary to choose the best mounting location. In addition, all considered important the size and flow of the material, as otherwise the insulation sheets can not firmly attached.

Fungus for insulation fittings: key advantages

Fixing any insulation is performed using special molds, which are called fungi or umbrellas for insulation. These fungi can keep the fragile insulation. Such umbrellas can be fixed on the insulation brick, concrete, gas and foam blocks, as well as stone.

Umbrellas can even hold a loose and friable material

Positive aspects of such umbrellas:

  1. Wide cap dowel for heat insulation, enables perfectly secure even minvatny insulation, and because of this, they are popular.
  2. As the umbrella has a long stem, it is able to withstand greater load bearing. Also performs gain fixation Long Expansion Zone, which consists of 3 zones. Hat itself has a roughness, and special openings.
  3. These fungi remain perfectly warm and have influence on the occurrence of corrosion. And if you compare the old way of fixing insulation with a new, a new method of fixing does not rot and is not destroyed.
  4. Since the umbrellas are made of plastic, they are not very expensive. And also creates additional plastic cold bridge, is durable and reliable material.
  5. In addition, they are very flexible. This makes it possible to reverse the expansion and contraction of the material, without damaging it.

To fixation was more robust in the center mold insert special wedge that expands when driving rod 3 side. And to what would be used for the installation of the fungus Penoplex on a concrete wall, you need to be sure to know the size, to allow for full flow and plug the appropriate option to purchase.

Fasteners for insulation: Terms of Use

Fastening of insulation must be performed on the building codes that specify the required number of fungi on the fasteners.

The widespread use of this type of fixture has received because of its design: the outer cap is wide enough that allows a good fix even mineral wool insulation

  • Installation of insulation on the internal walls or facade floor house should be carried umbrellas 5 per square meter, namely 4 umbrella on the corners and one in the middle;
  • At the corners of the house must be 6 fungi, which are installed parallel to each other;
  • If the building has a height of between 8 and 20 meters, then for optimal fastening of the insulation must be 7 umbrellas per 1 m 2, and perform the necessary hardware so that b 6 umbrellas are parallel to each other, and the 7th in the center;
  • If the building is a multistory, you need umbrellas 9 per 1 m 2.

Placing umbrellas would be better on the joints of panels of foam plastic or other sheet insulation.

Such a method does not lead to a significant increase in the thermal insulation holes, which adversely affect the efficiency of heat insulation.

If the umbrella is necessary to fix a metal coating, the umbrella attached to the rod screw and then extruded insulation, thereby to screw reached, insulated surface. Thereafter screwdrivers screw is screwed into the metal. Screw-in depth of the screw must be less than 1 cm.

What is plug-fungus for insulation

Fungi sheet insulation fasteners have several kinds.

For fixing all types of thermal insulation materials are special dowels - the so-called insulation for mushrooms or umbrellas

  • Fungi with plastic anchors;
  • Umbrellas with a thermal head;
  • And with a metal rod.

Fungi plastic anchors are characterized by having apertures in the conical plane of the flat bars, which obviously increases their adhesion to the wall. Also, these umbrellas have the lowest rate of thermal conductivity, which makes it possible to eliminate cold bridges. Installation of these anchors is possible even in places with a temperature indication from - 40 degrees.

Dowel with a thermal head is worth buying only if the heater is mounted on a wooden base. In order to minimize heat loss to the iron rod fastened plastic parts for sealing. Fasteners such dowels can withstand loads of up to 1 ton per 1 m 2.

If you take the option with a metal rod, there carnations, which extends the rod in the wall, made of galvanized metal. All other parts of the umbrella made of solid polypropylene, but bigger than the rest.

Umbrellas for insulation fittings: how the installation

Use of the fungus when attaching the sheet of insulation is very important detail, to the heat-insulating layer.

With such umbrellas you will get rid of the cold, as well as maximum insulation fits tightly to the base.

In order to properly secure the insulation fungi, it is necessary to perform the work in a sequence.

The sequence of insulation fittings fungi such:

  • The first thing we determine the number of fungi, which is necessary;
  • Next, we make, mark the place where the insulation sheet is fixed, but remember that the greatest spacing between the umbrellas should not be more than 80 cm horizontally and 30 cm vertically;
  • Now do the preparation of the seat, it is necessary to drill a hole the diameter of which should not be more than 1 cm;
  • Then dent umbrella to a maximum fit with the cap insulation, but not to apply a hammer wherein;
  • Further, hammering a nail into the wall, and closed by a special protective cap.

Remember that before the installation of insulation necessary to delete all the old plaster, and if this is not done, the drilling depth should be increased.

Dowel for fastening insulation fungi (video)

In the case of thermal insulation of your own home you must strictly adhere to the rules of fasteners, which means that the save on umbrellas in any case not worth it. If you save, the fungi can not withstand the load of plaster and subsequently collapse with all the insulation. This often happens if the saving on the corner regions since these regions are loaded with the maximum wind gusts.

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