Recommendations from builders on how and with what to attach Penoplex to a brick wall for insulation

Builders frequently use Penoplex, also known as extruded polystyrene foam, to insulate brick walls in order to increase a building’s comfort and energy efficiency. Penoplex is renowned for being strong and lightweight, which makes it appropriate for a range of insulation applications.

To ensure longevity and effective insulation, it’s important to adhere to recommended procedures when attaching Penoplex to a brick wall. It’s common for builders to advise using specialized adhesive made for insulation. By reducing thermal bridges, this adhesive not only firmly adheres Penoplex to the brick surface but also offers thermal insulation.

Make sure the brick wall is clean and clear of any loose mortar, dust, and debris before applying. By doing this, the adhesive will stick to the brick surface and the Penoplex panels more readily. In addition, for added security, some builders suggest using mechanical fasteners like plastic dowels or screws with plastic caps, particularly in locations vulnerable to strong winds or earthquakes.

For a uniform bond and to prevent gaps, it’s crucial to apply the adhesive evenly across the back of the Penoplex panels. Make sure all of the panels are level and positioned correctly by pressing them firmly against the brick wall. Before adding any more layers or finishing touches, let the adhesive cure in accordance with the manufacturer’s instructions.

Calculation of material for insulating a brick house

Establish the minimum insulation layer before making an appropriate insulation purchase. It is based on the following formula and is dependent on the climate, brick characteristics, and thermal protection area: Where: Sp= (Rq – S1/Kt. With.)x Kt.at.

• Sp – minimum thickness of the insulation layer in m;
• Rq – temperature coefficient for climatic zones, Rq = 3.3 m2 * K/W for g. Kerch;
• S1 – brickwork, m;
• CT. With. — thermal conductivity coefficient of the wall material, for solid red brick, Kt. With. = 0.81 W/(m*K);
• Ct.u. – The thermal conductivity of the insulation material for the foam complex CT.UP. = 0.04 W / (m * K).

For instance, the insulation thickness for g. Kerch, with wall thickness of 1.5 brick – 380 mm, density of 1800 kg/m3, plan 10 x 10 m, and height of 3 m, will be sp = (2.8 – 0.380/ 0.81.) x 0.04 = 10.26 cm.

Next, select packaging with a foamine thickness of 100 mm or less:

• The number of plates in the package is 4 pcs.;
• The area of ​​the plates in the pack – 2.8 m2;
• The number of packs with a stock coefficient 15%, 120/2.8/0.85 = 49 packs.

The area of the door blocks and glazing will need to be removed for a more precise calculation.

What is required for installation?

Tool types and quantity of consumables are determined by:

• Heater brands,
• specifics of work – external or external,
• chosen heat -protective pie,
• the number of storeys,
• technical condition of the walls.

External heat protection

The master will have to buy Penoplex in packs from the retail chain in order to have external protection.

How do you adhere the material to a brick wall using glue? You may also need to purchase consumables in accordance with factory recommendations, which vary depending on the insulation manufacturer. Typically, their list consists of the following:

1. Primer solution to increase the adhesion of the material to the brick; you can use a product with deep penetration of the solution at the rate of 300 ml/m2.
2. Starting profile for fixing the 1st row of slabs, calculated based on the perimeter of the building.
3. Profile fasteners according to the number of joints, 2 pcs. at the junction.
4. Dowels for fastening supporting parts, every 30 cm.
5. Adhesive for fixing slabs, first layer 5 kg/m2, additional layer for reinforced mesh – 10 kg/m2.
6. Mushroom dowels for Penoplex, 6 pcs/m2.
7. Fiberglass mesh for reinforcement, 1.1 m2 per m2 of insulation.
8. Plaster mixtures and paint for finishing, according to the recipe of the manufacturer of the finishing material.

The master needs a set of tools in order to produce high-quality work, and these include:

• construction level,
• ruler,
• plumb line,
• pencil,
• different spatulas,
• sandpaper,
• needle roller,
• hacksaw,
• knife,
• hammer drill,
• Bulgarian,
• electric drill,
• ladder.

Internal

The selection of consumables for internal thermal protection of walls requires particular attention because they must, among other requirements, comply with environmental safety regulations, be inert, and not emit microparticles into the environment.

In order to prevent moisture absorption from the room, the insulation needs to have a low vapor permeability coefficient and a minimum thermal conductivity coefficient of no more than 0.04 W/(m * K). You should also consider the way the heat insulator is integrated with the finishing materials before making a purchase.

Furthermore, the master will have to buy:

• starting metal profile,
• slats on the sheathing,
• self-tapping screws,
• foil tape,
• adhesive compositions,
• primer and antiseptic fungicidal impregnation.

A carpenter’s tool for installing the sheathing and a screwdriver are not included in the standard kit for a heat insulator for interior work.

How to warm it correctly?

This styling technology will be contingent upon the type of insulation (internal or external), its thickness, and its fastening technique. For instance, you will need to arrange a wooden or metal profile crate if the foam is enclosed by siding. It is not necessary to use a vapor barrier in this situation because there will be a ventilation gap between the protective layer and the decoration.

Brick wall insulation can occasionally take the shape of a hinged facade, which necessitates base preparation. Additionally, insulation is frequently installed on the frame for internal thermal protection.

How to glue from the outside?

Both slabs and wall coatings are meticulously prepared prior to heating the house. In the first instance, surface roughness is achieved by treating the slabs with a needle roller. In the second scenario, any cracks in the wall are carefully sealed and all previous layers of dirt are removed. Fungicide treatment of the surface from bio-pollution will also be necessary.

Once the surfaces have been properly prepared, check the base’s verticality and horizontality. If any deviations are found, use cement mortar to fix them. Anti-corrosion agents are applied to all metal components.

Once the prepared surfaces are totally dry and have reached their ultimate hardness, insulation installation can begin.

External installation technology

1. Mark the “0” line.
2. Install the starting profile at the lower level 30 cm below the 1st floor along the entire perimeter of the house. The level is struck with a laser tool.
3. Prepare and cut Penoplex slabs, adhering to the rule that the pieces should not be narrower than 200 mm. In the area of ​​openings, the elements are made in the shape of the letter “L” and have allowances for precise joining on slopes.
4. Prepare glue solutions on the recommendation of the manufacturer of the plates, which is indicated on the packaging. Usually the shelf life of the adhesive solution is not more than 2 hours and is used at a temperature not lower than +5 C.
5. Apply glue along the perimeter of the insulation with a width of 100 mm and a layer thickness of no more than 2.5 mm, while the surface of the sheet should be covered with adhesive composition of at least 40% of the area.
6. The first row is installed on the starting metal profile.
7. Each sheet is pressed tightly to the base, excess glue is removed and the vertical and horizontal levels are checked.
8. The position can be adjusted by tapping with a float.

The slabs can be further fastened with unique dowels after 72 hours. Following this, you can apply a layer of plaster to the reinforcing mesh and carry out decorative finishing.

How to secure from the inside?

Because Penoplex practically completely blocks the passage of steam, this is an extremely uncommon method of installing thermal protection. If there isn’t a thermal insulation system outside the building, this installation can be done with the appropriate strategy. An insulation layer in this instance is quite thin.

Penoplex installation technology on a room’s interior brick wall:

1. Cleans brick wall surfaces from dirt and deposits.
2. Seal cracks and chips, remove protrusions so that the surface is smooth.
3. Treating a brick wall with antiseptics.
4. Mark the insulation boards and check their quality according to the level.
5. Install the lower starting profile horizontally.
6. Knead the glue.
7. Begin installing the insulation from the bottom up with the seam offset, forming a staggered laying order.
8. Liquid nails are applied crosswise and along the perimeter of the slab.
9. The joints between the sheets are coated and sealed with foil tape.
10. If necessary, after 72 hours they are additionally secured with dowels.
11. Perform finishing that is acceptable according to the standards for interior work.

Possible difficulties and errors in the process

The foamyplex insulation is not difficult to install, but if the master does not follow the installation guidelines, the finished insulation system will not be able to offer the house excellent protection against heat loss.

Most typical errors that are permitted when installing Penoplex on a brick wall:

• the insulation was not pressed tightly against the wall during installation;
• dew point violation;
• the brick wall was not treated with a primer;
• the adhesive solution was spoiled because it stood for more than 2 hours;
• the glue was not leveled properly with a spatula;
• the drying period was not waited for the installation of umbrella-type dowels;
• The dimensions of the dowels are incorrectly chosen; they do not protrude beyond the insulation;
• plaster is made without reinforced mesh.

Advantages and disadvantages of insulation

Penoplex insulation is now frequently used in construction projects, for both internal and external brick walls. Its distinct heat-shielding properties, with thermal conductivity not exceeding 0.03 W/m*S, provide the main explanation for this.

The following benefits are noted by users who selected this building material:

1. The highest degree of thermal protection.
2. Very reliable protection against vapor formation.
3. Optimal moisture protection, which allows it to be used even in baths and saunas.
4. High compressive and tensile strength.
5. Good noise protection properties.
6. Non-flammable material.
7. High biological resistance.
8. Light in weight and easy to install.
9. Does not require expensive equipment for installation.
10. Extended service life of 50 years or more.

Among the drawbacks for homeowners are:

• its toxicity when heated, it does not burn, but melts, releasing hazardous substances into the environment,
• afraid of directed sunlight,
• breaks down under the influence of solvents.

Costs for building materials

The Moscow area’s and Moscow’s construction markets can currently provide the following materials to buyers at competitive prices:

• Penoplex in packs, thickness 100 mm for outdoor use, 1550 rub.;
• Penoplex in packs, thickness 50 mm for interior work, 1250 rub.;
• primer solution 10 l, 300 rubles.;
• plaster mixtures, 25 kg, 360 rub.;
• fiberglass mesh for reinforcement, 35.50 rub/m2;
• profile fasteners, packaging, 740 RUR.;
• glue for fixing plates, 25 kg, 230 rub.;
• mushroom dowels for Penoplex, 3 rubles. /PC.;
• dowels for fastening supporting parts, packaging, 740 rub.;
• starting profile, 120 rub.;
• facade paint for finishing, 15 kg, 513 RUR.

Cost of work in the Russian Federation

The number of discrete operations involved in the technological process of installing Penoplex on brick walls also determines the overall cost of work per square meter of brick wall area.

The region in which the object is located, the accessibility of the building, and its height all affect finishing work costs.

Average costs for various types of work by Russian Federation region:

1. Insulation of external brick walls, RUB 380. /m2.
2. Internal protection of brick walls, RUB 310. /m2.
3. Reinforcement of a brick wall with fiberglass mesh, 410 rubles./m2.
4. Wall grinding glue, 220 rub. /P.m.
5. Wall primer, 80 rub./ m2.
6. Applying decorative plaster, 380 RUR./m2.
7. Wall painting, 110 rub./m2.

Check out this section to learn how and what can be used to insulate brick walls from the inside as well as the outside.

Penoplex insulation of a brick wall necessitates careful thought and the right methods to guarantee durability and efficacy. The significance of properly preparing the surface prior to attaching Penoplex insulation is emphasized by builders. In order to do this, the brick wall must be cleaned to get rid of any dust, debris, or loose mortar that can compromise adhesion.

Building professionals advise applying a strong adhesive made especially for insulating boards after the surface has been cleaned and allowed to dry. A strong bond can be achieved by evenly applying the adhesive to the Penoplex panels and pressing them firmly against the wall. For additional stability, some experts advise using mechanical fasteners like screws with plastic washers or plastic anchors.

The use of adhesives such as liquid nails or other generic adhesives, which might not offer enough strength or durability for long-term insulation, is discouraged by builders. The Penoplex panels are less likely to move or sustain damage over time if they are properly fastened to the brick wall.

Homeowners can successfully insulate their brick walls with Penoplex, improving energy efficiency and comfort in their living spaces, by adhering to these guidelines and using the right supplies and methods.

Builders advise utilizing specialized adhesive made for insulating boards when securing Penoplex insulation to a brick wall, making sure the surface is dry and clean beforehand. A strong bond can be achieved by evenly applying the adhesive to the Penoplex panels’ backs. To guarantee complete contact and prevent air gaps that can lessen the effectiveness of the insulation, it is imperative to press the panels firmly against the wall. Extra stability can also be added by fastening the panels with mechanical fasteners, such as screws or plastic dowels, particularly in locations that are subject to strong winds or movement. By ensuring that the insulation stays firmly in place over time, this technique not only improves thermal performance but also maximizes building energy efficiency.

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