Liquid soundproofing for the bottom and arches
Content
Liquid soundproofing is applied to the bottom of the car and to the outer surface of the wheel arches in order to reduce the noise penetrating into the car interior from the mentioned body elements during driving, especially on a bad road. In some cases, liquid sound insulation is combined with classic sheet bitumen sound insulation. This enhances the corresponding effect. also, liquid noise insulation for cars additionally protects the outer surface of the car body from negative factors (water, dirt, small abrasive particles, chemical compounds that are sprinkled on roads in winter), prevents corrosion, and reduces the time between processing the bottom of the car and the surface of its wheel arches .
Liquid noise insulation (another name is liquid locker) is sold in the form of mastic in spray cans or cans / buckets, and it is quite simple to apply it. Even a novice car enthusiast can handle this. However, before direct application, you must carefully read the instructions on the package and strictly follow the recommendations given there. namely, in most cases, the surface to be treated must be thoroughly cleaned of dirt and rust. In addition, you need to accurately observe the dosage of the drug. Currently, many so-called "liquid noises" are being sold in car dealerships. further in the material are the characteristics of the most popular and effective of them. We hope that the rating will help you make your choice.
| Name of funds | Description and features | Packing volume | The price of one package as of autumn 2018 |
|---|---|---|---|
| DINITROL 479 Undercoat | The tool is designed to protect the car from the effects of noise, corrosion and gravel impacts (mechanical protection). It has a different name - "liquid fender liner". The drying time of one applied layer is about two hours. You need to apply two or three layers. The time of guaranteed operation of the frozen film is at least 3…5 years. | 1 liter; 5 liters; 190 liters. | 700 rubles; 3000 rubles; 120 rubles. |
| Nokhudol 3100 | Complex noise and vibration isolation paste. also protects the body from corrosion and gravel impacts. A very popular paste among motorists, due to its high efficiency. Reduces noise level by 45…50%. The resulting protective layer has a thickness of about 2 mm. | 1 liter; 5 liters. | 1200 rubles; 6000 rubles. |
| Primatech Extra | This is a sprayed universal noise insulation, which also performs the functions of vibration isolation and protection of the treated area of the car body from corrosion, including electrolytic corrosion. Safe for paintwork, it is used to treat wheel arches and / or the bottom of the car. Before application, the surface must be cleaned, but degreasing is not necessary. | 1 liter; 5 liters; 20 liters; 100 liters. | 1 liter costs about 500 rubles |
| Defender Noise | Means for protection of a car body from noise and vibrations. Including protects the body of the car from corrosion and exposure to sand and gravel. Safe for paintwork, rubber and plastic parts. Drying time for one coat is 24 hours. Operating temperature range — from -60°С to +120°С. Before application, the surface must be cleaned, but it is not necessary to degrease. | 1 liter | 500 rubles |
| Aerolux | Domestic development that protects the car body from vibration and noise, as well as corrosion, exposure to sand, gravel and small impacts to its lower part. According to its characteristics, it is similar to the above compositions. When applied to the surface, it only needs to be cleaned, without degreasing. | 1 liter | 600 rubles |
Advantages and disadvantages of liquid sound insulation
First of all, you need to deal with the question of what the use of liquid sound insulation for fender liner and bottom gives, as well as what advantages and disadvantages such compositions have. As mentioned above, with the help of these compounds, it is possible, firstly, to reduce the level of sound noise, and secondly, to protect the lower part of the car body from corrosion and minor damage. The composition of liquid noise insulation is based on the use of a rubber component with the addition of various additives. It is rubber that gives reliable protection to the body of the car.
The advantages of soundproofing with liquid rubber include:
- Ease of use. To apply such a composition, it is not always necessary to buy additional expensive equipment. All work can be done in a garage. The only requirement in this case will be the presence of a viewing hole or a lift, since you will have to work with the lower part of the car body.
- Sprayed liquid sound insulation is sold in the form of mastic (in jars or small buckets). In this case, it must be applied with a brush. You can also use a spray bottle and then the composition can be sprayed. This, firstly, provides ease of use of these tools, and secondly, it allows you to process even the most inaccessible places without any problems.
- The mass of the frozen sound insulation does not exceed 10 ... 20 kilograms, which does not affect the dynamic characteristics of the car, as well as its fuel consumption.
- Liquid sound insulation of the cabin has higher performance characteristics compared to similar sheet sound insulation. This advantage is provided by the fact that the liquid is more evenly applied to the curved surface of individual body elements, eliminating the appearance of thin spots in the hardened layer.
- Liquid noise insulation reliably protects the treated surface from corrosion, and in addition, it is resistant to moisture, slight mechanical damage, the effects of non-aggressive chemical compounds (weak solutions of acids and alkalis), as well as temperature changes, including sudden ones.
- Long service life, which is several years (depending on the specific vehicle and vehicle operating conditions).
- Liquid locker can be painted to match the color of the car. This can be done additionally, or when the body is completely painted, then the treated areas can be safely painted in the selected color.
However, like any other property, liquid sound insulation also has disadvantages. Yes, they include:
- Long process of solidification of the composition. It depends on the specific brand of product, but some of them can freeze up to two days. But in fairness, it should be noted that at the present time sound insulation is appearing on the market, which hardens in a matter of hours. However, such compositions are much more expensive. Surely this situation will change over time, since liquid soundproofing is a relatively new means, and they are also in the process of development.
- High price. In addition, most of these compositions are spent uneconomically due to their characteristics. Accordingly, for high-quality (dense) surface treatment of the body, a lot of material is needed, which will significantly affect the total cost of this procedure. However, as indicated in the previous paragraph, as various similar products develop and competition between their manufacturers, the price of liquid sound insulation will only decrease over time.
But, as practice shows, if you do not take into account the high cost of such sound insulation, then nevertheless the advantages of their use exceed the disadvantages. Accordingly, if the car owner has the financial opportunity to buy liquid sound insulation and use it to protect his car, then it is better to produce it. Using the product will not only make trips more comfortable, but also protect the bottom and fenders of the car.
Types of liquid soundproofing and their application
There are two basic classes to which all liquid soundproofings belong. Thus, the compositions of the first class are less technological, which is expressed in a longer preparation of the treated surface before the direct application of the composition. In addition, with the help of such sound insulation, only wheel arches and the bottom of the car can be processed. Generally, the following steps are required for surface treatment:
- to mechanically clean the surface. That is, with the help of water, brushes, detergents, you need to get rid of dirt. Next, you need to carefully remove the rust. To do this, you can use special rust converters. After all this, the surface to be treated must be degreased. However, read the full instructions on the soundproofing packaging, as there are exceptions or additions!
- Surface priming. This is done with special compounds that need to be bought additionally along with liquid sound insulation. Its essence lies in the fact that the composition would hold securely on the surface and protect the body of the car.
- nominal application of liquid sound insulation (liquid rubber). This is done with a brush or a spray gun (in the second case, it is much more convenient to work, and the consumption of funds will be lower). Excess that has fallen on visible areas of the car's paintwork should be removed immediately before the composition has hardened. Usually liquid rubber completely hardens in one to two days. The exact time when the machine can be used after treatment is indicated in the instructions on the package body.
Liquid noise insulation of the second class is more technologically advanced, its application requires less time, but its price will be higher. namely, the algorithm of its application is similar to the one given above, the only difference is that it is not necessary to perform preliminary priming of the treated surface. That is, you can apply the product immediately after cleaning and degreasing it.
in order to save oneself from the need to remove the “Shumka” composition (as it is called in machine jargon) from the visible surface of the paintwork that accidentally got there, the edges of these surfaces can be glued construction tape. It will protect the paintwork itself and will not cause damage to it during its subsequent peeling off. Cellophane can be used instead of tape. For protection, it is better not to use stationery tape, as it can damage the paintwork when it is removed.
Often, soundproofing is applied in two layers (and sometimes even three). This needs to be clarified further in the instructions for use of a particular tool. After applying the first layer, you need to let it dry completely. This will take several hours (less often up to two days). After that, a second layer is applied on top of it. It also needs to be allowed to dry completely.
A few additional tips for applying Shumkov to the surface of the body:
- The processing of wheel arches is best done by first dismantling the wheels. At the same time, it is desirable to cover the elements of the brake system and suspension with construction tape or polyethylene so that the specified agent does not get on them.
- Do not apply liquid insulation at an ambient temperature below +10°C. Similarly, leave it to dry. At low temperatures, the hardening of the agent will be very long and can be up to 7 ... 12 days, especially if one thick layer of sound insulation has been applied.
- Do not mix liquid mastics of different types and brands. It is better to buy exactly the same composition in the store.
- Do not apply the product in a very thick layer, otherwise it will dry out for a long time and have a loose structure. Instead, it is better to apply two or three thin coats to the surface to be treated.
- The approximate thickness of the first layer is about 3 mm, and the second - about 2 mm. The thickness of the applied agent can be controlled using an ordinary match by immersing it in the same liquid layer and removing it from there. And then, using a regular ruler, check the length of the painted part on the match.
Consumption of liquid sound insulation
When buying soundproofing, the question certainly arises, how much will be needed for a car. According to the experience of many masters, about 4-2 liters of mastic are used for 2 arches with a layer of 3 mm. As for the bottom, here you need to take into account the dimensions of the car and the tasks assigned to soundproofing. For example: according to the instructions, for most Shumka manufacturers, 1 liter per 1 m2 is consumed (with a layer of 1,5 mm), and in order to reduce the noise level by 50%, you need to process the bottom in two layers, that is, 2 liters per square. Let's take the average dimensions of a passenger car, 4 (m. length) x 1,8 (m. width) \u7,2d 1 (sq.m.). We take away the engine compartment of 6,2 sq.m. and we get 2 sq.m. x 12,4 l.kv. = 13 liters (round up to 3 liters, in order for something to be exactly enough), so much is needed to process the bottom. As a result, to process the entire car, you will need 13 liters for the arches and 16 liters for the bottom, for a total of XNUMX liters.
Rating of popular liquid soundproofing
The car market provides a fairly wide range of liquid noise-insulating rubber. Often these are tools designed to provide both noise and vibration isolation. Our editors have compiled a rating of the best liquid noise insulation, which are most popular not only among ordinary car owners, but also among professional car service workers involved in the repair and maintenance of cars on an ongoing basis. The rating is not commercial in nature and does not advertise any of the presented funds. Its goal is to provide the most complete and objective information in order to make it easier for car owners to choose the best product for themselves from the stores on the shelves.
DINITROL 479 Undercoat Liquid Fenders
DINITROL 479 Undercoat is positioned by the manufacturer as a universal composition designed to protect the car from noise, corrosion and gravel. It is recommended to apply it to the outer surface of the wheel arches, although it is also possible to process the bottom with it. Another name for the composition is “liquid wheel arch liners” or “anti-corrosion compound for bottom treatment”. It is a bituminous wax mastic with a black rubber filler. Drying time is about two hours. Material in a container is on sale completely ready to application.
As for its application, for this you can use a brush, a rubber spatula or a spray gun (a gun attached to a compressor that produces a pressure of about 2 ... 6 atmospheres). Before applying, it is imperative to dismantle the wheels, carefully, using Karcher or its equivalent, rinse the surface to be treated from dirt. Please note that in garage conditions, simply using a bucket and a rag to wash the body well will not work, so it is better to ask for help (namely for washing, although it is possible to completely apply the composition) to a specialized service where there is appropriate equipment. also, if there is rust on the body, it must be removed with a grinding wheel (preferably) or a brush.
Real tests show that when applying two or three layers according to the technology corresponding to the instructions, the product will work for several years (at least 3 ... 5 years), thereby protecting the car body and making the ride of passengers and the driver more comfortable. Therefore, DINITROL 479 is definitely recommended for purchase.
Anticorrosive DINITROL 479 It is sold in different containers - a 1 liter bottle, a 5 liter bucket and a 190 liter barrel. Prices as of spring 2021 are about 1500 rubles, 6300 rubles and 120 thousand rubles, respectively.
Nokhudol 3100
Noxudol 3100 is a complex noise and vibration isolation paste. Accordingly, it can be used both to reduce vibration on various elements in the upper area of \u45b\u50bthe body, and to treat wheel arches and the bottom to reduce noise during driving and protect its surface from corrosion and impacts of small gravel. It is very common and is widely used by different motorists throughout the country. It is a microdispersed, elastic water-based paste of dark brown color. According to the manufacturer, it reduces the noise level by 0,156 ... XNUMX%. It has a low coefficient of thermal conductivity - XNUMX, that is, it maintains a constant temperature in the car. That is why she was given an honorable second place.
After processing, a dense layer about 2 mm thick is formed on the body, which can be further painted. The coating has high adhesion and water resistance, therefore it protects the body from corrosion. It is applied traditionally with a brush, rubber spatula or spray gun. Interestingly, this coating can be used not only in machine, but also in industrial technology, operating, however, at low temperatures, up to approximately +120°C.
It is sold in two types of containers - a 5-liter jar and a 39110511-liter bucket. Their article numbers, respectively, are 39110405 and 1600. Accordingly, the prices for the above period are 6300 rubles and XNUMX rubles.
Primatech Extra
Primatech Extra is a sprayed universal sound insulation that simultaneously performs the functions of vibration isolation and protection of the treated area of the car body from corrosion, including electrolytic. The composition of the product includes high-quality bitumen, wax compounds, functional additives. The basis is a solution of organic compounds. The tool can process wheel arches and the bottom. The dried film is black. Absolutely safe for car paintwork, as well as its rubber and plastic elements.
The application is traditional, the surface to be treated must be thoroughly cleaned, and if there are pockets of corrosion on it, then get rid of them by mechanical cleaning (or using rust converters). Degreasing is not required. The documentation states that drying to degree 3 occurs in 24 hours. The temperature range of operation of the product is from -60°С to +120°С. The state of 5% salt fog at +35°C is about 1600 hours. Application is recommended to be carried out with a spray gun (pneumatic gun) at a pressure of 2 ... 6 atmospheres. The thickness of one layer should be about 3 mm.
It is sold in containers of four types - 1 liter, 5 liters, 20 liters and 100 liters. The price of a one-liter package is about 500 rubles.
Defender Noise
Defender Noise is positioned by the manufacturer as a means to protect the car body from noise and vibration. It is a set of functional additives and composites in a solution of organic compounds, odorless. Absolutely safe for car paintwork, as well as for rubber and plastic parts. Designed for application on the bottom of the car and / or its wheel arches from the outside. In addition, the product effectively protects the surface of the body from corrosion, including electrolytic and gravel impacts when driving on the corresponding road. Drying time to degree 3 - 24 hours. Temperature operating range is from -60°С to +120°С.
The manufacturer writes in the instructions that before applying the product to the surface, the latter must be thoroughly washed, dried and free from peeling paint and / or rust pockets. There is no need to degrease the surface! Shumka is sold ready for application. To do this, you can use a brush, rubber spatula or air gun. The latter option is most preferable, while the pressure in it should be in the range from 2 to 6 atmospheres. Real tests show the good effectiveness of this noise protection, so it can be fully recommended to both ordinary car owners and car service workers to sell it to their customers.
It goes on sale in a container of 1000 ml. Article - DF140001. The price of the package is about 500 rubles.
Liquid soundproofing "Aerolux"
Aerolux liquid soundproofing is produced in the Russian Federation by Rubber Paint. It is positioned by the manufacturer as protection of the car body from noise and vibration while driving on a bad road. it is also indicated that the product provides effective protective aerochemical protection of the car body from corrosion, exposure to sand, gravel, small abrasions in the lower, processed, part of the body. In general, it is similar to all the means described above, including in terms of characteristics and application method.
As for the latter, the surface to be treated only needs to be thoroughly cleaned, to remove dirt, peeling paint and, if it occurs, then rust. It is not necessary to degrease the surface. Shumka is applied using a pneumatic gun under a pressure of 2 ... 6 atmospheres. Traditionally packaged in a 1000 ml bottle. According to the reviews of the masters who used Aerolux, for example, they needed one cylinder to process two wheel arches on a Toyota Camry car. And for processing the bottom of the car "Lada Priora" - two and a half cylinders. The protection performance is quite good, and the cost is in the middle range. Therefore, such sound insulation is quite recommended both for use in a single case and on an ongoing basis in various car services. The price of one bottle is about 600 rubles.
Over time, the above rating may change and be supplemented, since more and more new similar formulations are currently entering the market. This is due to the popularity of these funds. If you have seen soundproofing products that are not listed or any others for sale, or you have had any experience using them, share this information in the comments. Thus, you will help other car owners in choosing one or another means.
Hack and predictor Aviator
The use of liquid noise insulation will not only reduce noise in the car, but also reliably protect its bottom and the outer surface of the wheel arches. Therefore, they are definitely recommended for use, especially in the autumn-winter period and in a situation where the car often drives on bad roads. this is also true for cars in which the suspension is not set up very well, and a lot of noise is distributed from it while driving. The application itself is not difficult. You just need to figure out which composition to choose - first or second class. The amount of preparatory work directly depends on this. If this article was useful to you, please share it on social networks!
