Aluf technical characteristics. Characteristics, properties and application of reflective thermal insulation with aluf, penofol
Description
Reflective insulation ALUFOM - trademark the company "Resource" is a complex heat, steam and sound insulation with a high reflection coefficient of the radiated heat energy.
Polished aluminum foil (ALUFOM AL) or metallized polypropylene film (ALUFOM PE) is used as a reflective element ("thermal mirror"). Foamed polyethylene NPE is used as a basis.
The overall efficiency of a thermal insulation system using ALUFOM reflective insulation increases by 20-70% (depending on particular conditions, seasons, etc.).
Properties
Installation of Alyufom
Reflective insulation ALUFOM AL mounted directly on the wall and ceiling of the steam room of a bath or sauna with a reflective coating inside the room. Heat insulated if necessary Entrance door... Installation is carried out using construction stapler, or small nails. The canvases should be installed end-to-end, connecting the joints with aluminum tape. A prerequisite for the effective action of this isolation is the presence air gap not less than 9-15 mm from the foil surface to the nearest surface.
Aluminum is a good conductor, so wiring must be well protected.
Attaches to the reflective coating wooden lathing on which it is mounted interior decoration(lining, etc.)
Reflective insulation ALUFOM RE is laid on the surface of the floor slab with a reflective coating upwards. The canvases should be installed "end-to-end", connecting the joints with metallized tape to create a complete vapor and waterproofing. They are mounted on a reflective coating heating elements, while the contacts should be insulated to avoid short circuit... Then the entire surface is poured monolithic cement-sand screed(4-6 cm thick). In this case, additional protection for the reflective coating is not required, since it is made of a polymer metallized film and is able to retain its properties in alkaline environment cement-sand mortar.
Most of the heat loss from buildings is due to infrared radiation. In this regard, massive materials (basalt wool, penoplex, etc.) are not able to give maximum level thermal insulation. However, this problem has constructive solution- Aluf.
Alufom has a foil-clad aluminum base, thanks to which it is able to reliably protect buildings. On hot days, it reflects heat radiation, and in winter it keeps the heat inside. Next, let's get acquainted with the main features of such thermal insulation.
Advantages and disadvantages
This type of insulation has the following advantages:
- Highest heat reflectance. In this aspect, foil models outperform bulky materials. Their efficiency is close to 100% (on average it is 97%), which practically excludes the possibility of heat loss.
Tip: This type of insulation is the best option for finishing baths.
- Another major advantage this insulation- absolute moisture resistance. The aluminum layer is not “afraid” of even direct ingress of water, which provides the material with a long operating period.
- Thanks to its properties, Alufom can also serve as sound and waterproofing. Laying two layers will completely solve the problem with finishing floors.
- High temperature resistance. The operating temperature range is quite high, so it can be used in all regions, even the coldest.
- Saving space. The thickness of the insulation does not exceed 5 mm, which significantly reduces the cost of usable space when creating a heat-insulating layer.
- Ease of installation. Aluf is very lightweight, which makes it easy to work with. There is no need to create any strength frames - sheets can be immediately attached to the original surface.
Are there any significant drawbacks to this insulation? The only serious disadvantage of this material is its relatively high price. It is possible to organize a high-quality insulating layer at a cost that is 1.5-2 times lower. However, it should be borne in mind that it gives sound and moisture protection, so there is no need to lay the corresponding layers.
Key specifications
Most experienced craftsmen when choosing a heater, first of all pay attention to specifications, since its effectiveness will depend on them. Next, we will consider the main indicators that affect the overall efficiency.
| Technical specifications | Material type | ||
| A | V | WITH | |
| Thermal reflection coefficient (from) | 0,9 | ||
| Optical reflectance (from) | 97 | ||
| Thermal conductivity index (under normal conditions), W / m * С | 0,031 | 0,032 | 0,033 |
| Specific gravity (for models standard thickness) kg / m2 | 0,15-0,22 | 0,17-0,24 | |
| Water absorption coefficient (percentage) | 0,7 | 0,65 | 0,6 |
| Elasticity index (dynamic) MPa | 0,26 | 0,39 | |
| Heat absorption index (per day) | 0,51 | 0,45 | |
| Specific heat m2 * C / W | 1,95 | ||
All available classifications
There are several types of insulation Aluf, differing in their key technical characteristics:
- Alufom A is polyethylene foam covered with aluminum spraying foil on one side. Most often it is used as a vapor barrier or additional insulation. Laying in 2 (for cold layers 3) layers allows you to create reliable protection from heat loss.
- B - is a polyethylene foam covered on both sides with aluminum foil. These are already more advanced models with a maximum operating period. Most often used for finishing roofs, mansard rooms, attics, etc.
Important! When buying, ask the seller for certificates of conformity. Today, cheap, partly "handicraft" analogs are often sold under the guise of popular materials. This is especially true for the field of foil insulation, in which the population did not have time to fully understand.
- C - especially flexible polyethylene, which is coated on one side with aluminum spraying, and on the other with an adhesive base. This greatly facilitates the installation of the material, since self-adhesive and additional measures it is unnecessary to undertake on fixation. Most often, this type is used for arranging air ducts and heating mains (in combination with kaolin)
Application area
As mentioned earlier, Alufom has found wide application in many industries. It happened thanks to him high efficiency, which most competitors cannot boast of. They use it for insulation:
- Roofs, attics and attics. Here, high moisture resistance comes to the fore.
- Saunas, baths, garages.
- Climate systems.
- Walls of private and industrial buildings. At the same time, both external and internal insulation is permissible (in the second case, the efficiency will be several times higher).
- Water mains. In this case, group B is used.
- Heating boilers, warm floors. This is achieved through a wide operating temperature range. Not many competitors are able to withstand such colossal loads (daily drops up to 400 degrees)
- Transport facilities. In particular, even more often the others are used for finishing containers and vans. Its properties are ideal for these conditions.
- Country and agricultural buildings.
Conclusion
In general, Aluf seems to be an excellent material capable of solving many problems. However, given the high cost, it can be recommended only in cases where there is a very high humidity(baths, saunas, baths, etc.), or when design features do not allow the use of more massive materials.
The problem of reducing heat loss today is faced by every owner of real estate (state, federal subject, legal and individuals). Right choice thermal insulation of buildings is essential condition to create a comfortable indoor climate, slow down the process of wall destruction from thermal stress and humidity and reduce payments for consumed energy resources (gas, electricity, solid and liquid fuels).
Improving the thermal performance of existing buildings is a major challenge. This problem can be solved according to new requirements, only due to the device of additional thermal insulation, made of the most effective materials ensuring long-term preservation of quality indicators during operation and environmental friendliness.
It is known that heat is transferred in three ways: heat conduction, convection and infrared radiation. Pictures show the share of these components in the total heat transfer for an empty building without internal partitions:
As can be seen from the figures, thermal radiation plays a dominant role in all cases.
Heat transfer is the movement of heat at the molecular level (when one end of the rod is heated, the other end of the rod heats up due to heat transfer).
Convection is the movement of heat through gases and liquids due to their movement. Warm masses rise up and are replaced by cold ones.
Radiation is the spread electromagnetic waves in space. When the body absorbs such rays, their energy turns into heat, heatsand transfers it further, entering into molecular contact with solids and liquids. Manufacturers of solid insulation materials, drawingattention to the meaning "R"Lose the insulation of the largest source of thermal energy - thermal radiation. Modern massiveinsulating materials, despite their thickness, do not have the ability to reflect thermal radiation. In fact, they act as batteries, storing heat, which is then radiated again. A striking confirmation of this is any building in the evening after a hot day. Even with the windows and doors open, the building remains "hot". This is the main reason that in summer at noon in buildings that are not provided with air conditioning, but have massive insulation, it is quite hot. Fighting this phenomenon requires additional energy costs. When massive insulation heats up in cold weather, condensation will form and, as a result, the penetration of water vapor into constituent elements walls. When humidifying, heat insulators based on mineral wool and glass wool lose their insulating properties up to 50%. According to their technical characteristics, not all heat insulators can be used in a residential area. The main material used to stop losses from thermal radiation is polished aluminum foil with high degree content of pure aluminum. The use of foil allows thermal radiation to be reflected back to its source. Therefore, on a hot summer day, the building will be protected by the reflection of heat radiation to the outside, and in the winter by the reflection of expensive heat inward. All this contributes to more effective use heat and energy resources.
One of the most effective species heat, steam, and sound insulation is ALUFOM ( PENOFOL ) - reflective thermal insulation material new generation, which reduces by 70% heat losses in a building in winter and heat accumulation in summer, reflects 97% of thermal radiation, creating a "thermos effect" environmentally friendly - completely harmless to humans, fireproof. You can walk on the insulation - the material can withstand human weight without changing its structure. Keeps its properties when wet. Rodents and insects do not start in polyethylene.
ALUFOM (PENOFOL) is a multilayer material consisting of a layer of environmentally friendly food grade polyethylene foam with low thermal conductivity, on one side (type A) or on 2 sides (type B) covered with clean (99.4%) food foil with high reflective characteristics. Type C is produced with one-sided foil, on the other side there is an adhesive composition with a coating material. The foam can be from 2 to 8 mm thick in rolls up to 30 meters long. Has unique thermal insulation properties with small thickness.
ALUFOM(PENOFOL) increases the heat-shielding properties of structures without increasing the volume and is used as an independent thermal and sound insulation, or in conjunction with different types insulation, significantly complementing their properties, provides a comfortable microclimate in residential and other premises.
Installed under the roof of agricultural buildings, ALUFOM will relieve pets from the sweltering heat in summer and soften the frost in winter, which will not slow down to affect growth and milk yield.
Reference indicators:
|
Application temperature |
From -60Со to +100 оС |
|
Reflective effect |
up to 97% of radiant energy |
|
Thermal conductivity |
0.031-0.032 W / (m оС) |
|
Sound absorption, not less |
32 dB (A) |
|
Vapor permeability coefficient |
0 mg / (m h Pa) |
|
Relative compression, Eq, MPa |
0.09 Mpa |
|
Compressive strength, not less Water absorption by volume |
0.035 MPa 0,6% |
|
Estimated durability |
25 years |
Fire-technical characteristics:
|
ALUFOM type B |
4 mm (foil on 2 sides) |
Silicate brick |
840mm (3.5 brick masonry) |
|
Clay brick |
672 mm (2.5 brick masonry) |
Mineral wool mats |
67 mm |
|
Expanded clay concrete |
490 mm |
Mineral wool slabs |
77 mm |
|
Aerated foam concrete |
348 mm |
Expanded polystyrene |
46 mm |
Insulation ALUFOM designed for thermal, noise, and vapor insulation of building envelopes, thermal insulation of air ducts and pipelines of cold and hot water supply systems and heating systems for rooms B, G, D in residential, public and industrial buildings, including agricultural, insulating buildings and structures from the rodon, for insulating transport containers, cars, awnings, tents, field hospitals, sleeping bags, etc.
Installation:
The maximum effect from the material is provided when there is an air space of at least 1-2 cm from the side of the ALUFOMA foil. In a wet screed, cement and its components are an aggressive medium for foil, therefore it is necessary to protect the foil plastic wrap or use a specially produced laminated ALUFOM (PENOFOL). Aluminum is a good conductor - wiring must be securely protected! A simple installation of Alyufom behind a heating radiator increases its efficiency by 20-30%. ALUFOM (PENOFOL) can be used for waterproofing wooden structures buildings. To insulate the outer walls inside the room with ALUFOM, foil-coated on 2 sides (type B), a crate is made on the wall, onto which it is stuffed with a stapler or nails into the joint with obligatory gluing with foil tape to ensure vapor barrier.
With a brickwork thickness of 1 brick R = 0.5, in this case, you can add between brickwork and foam up to 50 mm of mineral wool insulation in the first crate, which will give R = 0.5 and as a result we get 2.72, etc. The use of ALUFOM (PENOFOL) when insulating walls increases the usable area by 4 running meters by 0.2 - 0.4 square meters... When installing walls, roofs, it is necessary to provide ventilation from the side of the foil. ALUFOM can be used as insulation for floors, baths, toilets. concrete screed, fill in the mesh and also put concrete, and a tile covering on top. For floor insulation, ALUFOM can be placed under the carpet. By insulating pipes, it is possible to save on the thickness of the insulating layer and prevent the appearance of rust. For effective pipe insulation, ALUFOM (PENOFOL) with 2-sided foil is used.
To create an air space between the pipe and the foil, banding rings made of ALUFOM or other material with a height of at least 20 mm are placed on the pipe, then the pipe is covered with ALUFOM. For isolation ventilation ducts and pipes, it is most effective to use self-adhesive ALUFOM (PENOFOL) type C. When insulating ceilings, roofs and attics, reflective insulation significantly increases the heat-shielding properties of the structure without increasing its volume.
To avoid the penetration of radiation through the roofs in summer, you can use ALUFOM with double-sided foil (heating the roof in summer over 80 ° C).
All seams must be glued with aluminum tape to create a heat and vapor barrier. The damaged ALUFOMA foil is repaired with aluminum tape.
Alufom-A
- Scope of application
- Features of Alyufom
- Advantages
- Varieties
Reducing heat loss is one of the main tasks, both for a private trader who is building his own house, and for any other homeowner. Only correct selection hydro, heat and soundproof materials is able to guarantee in the future (after completion of construction or carried out repairs) the presence of a rather comfortable microclimate inside the premises. Therefore, on the pages of this article of the site, the site will tell you about an innovative building material Aluf - with reflective insulation to reduce heat loss.
Scope of application
Aluf for arranging underfloor heating Aluf is used quite widely, today it is used for thermal insulation of various packaging, in thermal blankets, in sleeping bags, in flooring for tents, in construction, in transport (blinds, awnings), etc., however, Aluf is widely used in construction. It is mainly used to reduce heat loss;
Thermal insulation of the balcony with the help of Alyufom - in saunas;
- in suburban buildings;
- walls (outside, inside);
- in agricultural buildings;
- roofs;
- climatic equipment;
- when arranging underfloor heating;
- ventilation;
- boilers, heating devices;
- pipelines;
- metal structures.
Insulation of the engine compartment in a car with the help of Alyufom
In addition, alufum is used in the transport industry in containers, vans are protected with it by bodies and engine compartments.
Application features
Since most of the heat loss occurs due to infrared radiation (this is about 60-65%), therefore massive thermal insulation materials do not provide enough good protection at home from heat loss. The main material that is capable of returning infrared rays back is aluminum foil. The walls of the building, which have such protection, return heat to the inside of the building in winter, and in the summer heat, heat radiation is reflected to the outside.
As already mentioned above, this is an innovative sound-, hydro-, heat-insulating material that has a fairly high coefficient of heat reflection. The functionality of Alufom is based mainly on the properties of polished foil with a high aluminum content and the presence of air bubbles in the polyethylene microfoam. Such a structure is capable of reflecting up to 97 percent of heat radiation in the summer and preventing cooling in the winter.
Aluf is used for pipeline insulation Advantages
Alufom has many advantages over similar materials. If you look at the reviews, then with the help of it you can equip the most reliable and high-quality thermal protection. It also creates hydro, steam, and sound insulation and is able to function reliably even under conditions high humidity... Savings are provided when using it useful space, so it has a small thickness, besides everything during operation, it does not wear out, does not rot and is environmentally friendly. To work with it, you do not need any (special clothes), the installation of this material is quite simple, since it has a low weight. It has no significant drawbacks.
Self-adhesive aluf Varieties of material
Aluf, depending on the available technical characteristics, can be divided into varieties, such as Aluf A, Aluf B, Aluf S.
- Aluf A- made on a polyethylene base, which on one side is covered with foil. It can be used as a vapor barrier or as an additional layer of thermal insulation, and sometimes it is laid in two layers. In this case, Alufom is able to provide full heat and waterproofing.
- Aluf B- made of polyethylene and covered with foil on both sides. They use it for arranging roofs, insulation attic room, gender, etc.
- Aluf S(self-adhesive) - polyethylene is covered with foil on one side, and its other side is covered with glue, and on top of the glue with a special covering material. This type of Alufom is mainly used only on air ducts.
Description
Reflective insulation ALUFOM - a trademark of the Resource company - is a complex heat, steam and sound insulation with a high reflection coefficient of the radiated thermal energy.
Polished aluminum foil (ALUFOM AL) or metallized polypropylene film (ALUFOM PE) is used as a reflective element ("thermal mirror"). Foamed polyethylene NPE is used as a basis.
The overall efficiency of a thermal insulation system using ALUFOM reflective insulation increases by 20-70% (depending on particular conditions, seasons, etc.).
Properties
Installation of Alyufom
Reflective insulation ALUFOM AL mounted directly on the wall and ceiling of the steam room of a bath or sauna with a reflective coating inside the room. If necessary, the front door is insulated. Installation is carried out using a construction stapler or small nails. The canvases should be installed end-to-end, connecting the joints with aluminum tape. A prerequisite for the effective action of this insulation is the presence of an air gap of at least 9-15 mm from the foil surface to the nearest surface.
Aluminum is a good conductor, so wiring must be well protected.
A wooden lathing is attached to the reflective coating, on which the interior decoration (lining, etc.) is mounted.
Reflective insulation ALUFOM RE is laid on the surface of the floor slab with a reflective coating upwards. The canvases should be installed "end-to-end", connecting the joints with metallized tape to create a complete vapor and waterproofing. Heating elements are mounted on the reflective coating, and the contacts should be insulated to avoid short circuits. Then the entire surface is poured with a monolithic cement-sand screed (4-6 cm thick). In this case, additional protection for the reflective coating is not required, since it is made of a metallized polymer film and is capable of retaining its properties in an alkaline environment of a cement-sand mortar.
