Currently, almost, with any kinds of construction or repair work, assembly foam is widely used. This convenient material is used everywhere in the arrangement of door and window openings, the installation of plumbing devices, sealing windows and in the case of other similar manipulations.
In addition, the universal sealant is often used in the manufacture of heat insulating panels, they are filled with various types of cavity and cracks in building structures. The main advantage of this building material is the versatility of use. Enjoy them is easy and convenient.
Foam, Pistol and Cleaner - Main Attributes Working With Mounting FoamWhat is the mounting foam
This sealing material is a household and professional variety. Their operational characteristics are comparable, the main differences are concluded in the amount of containers in which one or another type of packaging is packaged. Household foam is produced in cylinders with a capacity of up to eight hundred milliliters equipped with a small cross section tube. The magnitude of the internal pressure does not reach large values, it helps reduce the consumption of the active substance, even when using a spray without special devices.
Professional foam has appropriate labeling The sealant for professional use is produced in cylinders with a capacity from one and a half liters and is designed to perform a large volume of work on the seal of doors, windows, filling significant cavities and so on. The pressure inside the container is very large, so apply the material correctly without special devices is difficult. The outlet of the professional capping is supplied with an attachment for installing a pistol sprayer.
Preparation for material application
The processed elements before applying the mounting foam must be prepared. For this, the following manipulations are performed:
- The surface is thoroughly cleaned from construction pollution and degreases. If the width of the cavity exceeds eight centimeters, it is recommended to fill in a foam to reduce the consumption of mounting foam and improving heat insulating properties.
- The processed area is moisturized. To do this, it is better to use a sprayer, then the surface will be saved evenly.
- The ambient temperature is monitored. The foam can be applied in the range of positive temperatures from five to twenty degrees Celsius. The upper limit is thirty degrees. With frosts, material resistant to low temperatures is used.
Winter foam is designed to work at low temperatures When working, it is necessary to comply with the safety requirements. All manipulations are performed in protective glasses and gloves. The respirator is used in the case of the presence of toluene in the active substance.
Work canter with a tube
You can work without a pistol as follows. Before you start, the cartridge with the mounting foam must be vigorously shake. Then the existing tube is screwed into the adapter, and the container turns up upwards. This is done due to the fact that the oscillating gas is much easier than the active substance, and with this position of the cylinder, all components of the material are better mixed and exited out of the container.
Rules for applying foam with tube When applying foam, it is necessary to take into account that the material is significantly increased in the amount of frozen, and therefore the cavity should be filling no more than one third of its depth. The excessive excess can always be trimmed with a long sharp knife.
It is necessary to make water, not only the treated surface is necessary, but the sealant itself, so it will grab faster.
The thickness of the applied material should not exceed four centimeters. Before continuing the work, it is necessary to wait about thirty minutes to solidify the previous layer. The final curing will occur after eight hours. It must be recognized that it is not always convenient to use the mounting foam without a pistol. The following video will help solve the remaining questions.
Advantages of the use of pistol foam
The use of pistol foam compared to the use of household springs has a number of advantages. The main of them is the exactly verified amount of sealing material supplied to the treated surface. In addition, quite long breaks are possible in operation. The mounting foam in the pistol device does not pour significantly longer than in the canopy with a tube.
Pistol foam work easier The long trunk of the pistol allows the processing of hard-to-reach places, feeding the foam through a nozzle is much more smooth than through a plastic tube. This is very important with layer-by-layer filling significant in terms of cavities and, if necessary, vertical applying sealant.
Indicators of plasticity at professional foam is better than the household, due to this and more accurate dosage, the material is spent more economical.
Labor productivity using a gun increases significantly. This is especially important when performing construction work of large volume.
How the gun is arranged
A gun is arranged for foam feed enough. The main components of its design are:
- Threaded or snap-down fastening on containers with mounting foam. It houses the valve with a pin.
- Opening the output of the foam mechanism. It is made in chicken form.
- Material regulating device. It is performed as a screw.
- Output tube. A foam is served through it.
- Pistol handle. She is obliged to comfortably go to hand.
The quality of the pistol determines the convenience of work The more metal parts in the pistol, the more reliable in use. In particular, it concerns the details of its design, which are subjected to the greatest operational loads.
Preparation and replacement of the canister, pistol installation
Before installing a pistol, the material must be prepared. For this, the following procedures are performed:
- The container is heated in water to operating temperature and vigorously shakes to bring the active substance to a homogeneous consistency. This is done for the uniform exit of the material.
- The pistol device is located down the handle, top view or snap the cylinder with a pre-removed protective cap. The hissing sound denotes the beginning of the installation of the mounting foam.
- The adjustment screw when pressed the curricular mechanism is achieved by the output of the foam of normal density. The first portions are sent to a polyethylene package for wiring from an excess air system.
Even with a small amount of work without a purifier foam, it is difficult to do Before replacing the cylinder, the design details of the pistol device must be cleaned of contamination. For this, the following manipulations are performed:
- the clever mechanism is pressed for strengthening excessive pressure in the system;
- a tank with a cleansing solution is installed on the pistol device;
- several times for about ten seconds, washing up to the exit of a clean solution;
- design elements are lubricated.
Rules for working with pistol foam
The pistol foam is applied to the processed surfaces evenly in the direction from the left side to the right or vertically from the bottom to the top. The cavity is filled with half or one third of the volume in accordance with the coefficient of expansion of the material. If it is necessary to seal the seams on the ceiling overlap, the pistol barrel is lengthened with a flexible tube in such a way that the spray can be placed under the ceiling. The length of the applied layer should not exceed ten, and the thickness of four centimeters. The subsequent layer is applied after the initial clarification of the previous one.
When seeding seams on the ceiling, the advantages of using a gun are noticeable even more Pistol foam as curing is expanding and presses on the adjacent plane, which can cause their deformation. As a result, in the event of the needs of filling through gaps, the mounting foam is poured only on the one hand, and with the opposite - use other sealant, most often on the basis of silicone.
In the process of performing work, it is necessary to ensure such a situation so that the end of the pistol barrel is always placed inside the applied layer of sealing material. Cleaning foam is purified with a vein moistened with acetone or another solvent. A specially selected video clearly demonstrates the described process.
Frozen Time and Shavi Processing
Complete curing of the mounting foam occurs eight hours after applying it. All this time, it is not necessary to have a mechanical impact on its surface, since the internal structure of the sealing material may be subjected to undesirable changes. After this time, the surplus of the mounting foam is cut into sharply sharpened cutting tools or hacksaw for metal. If this is premature, it is possible to violate the quality of the seam itself, it can seek and fall inside. To accelerate the frozen of the sealing material, it is recommended to moisten using a sprayer.
Stages of processing, protection and finishing after applying a mounting foam The mounting foam has excellent heat and soundproof operational qualities, but the surface of the seams formed by this material does not look very beautiful. As a result, in most cases their decorative treatment with putty, cement mortar, paint or other finishing construction material is carried out.
The hardened sealant maintains significant temperature fluctuations in the environment, but decomposes under the influence of ultraviolet when irradiated with the straight rays of the sun. As a result, the surface of the seams formed by the mounting foam is painted, plastered, closed by platbands or is protected from solar radiation in any other way.
The appearance of a new generation in the modern construction sector of windows opened ample opportunities for the use of modern sealant on a polyurethane basis - a mounting foam. It is designed to connect various elements of the structures among themselves. The installation of plastic windows is no longer done without a construction foam. Earlier, the installation of windows was distinguished by the inconvenience and increased complexity of sealing due to the use of packle on a cement solution, which ignored numerous small increasing spaces. The mounting foam is capable of filling them, thereby ensuring heat, sound insulation and sealing properties during installation. Filling the emptiness and cracks in the door and window blocks, water pipes, roofing materials and other building structures, the mounting foam creates not only tightness, sound insulation due to the filling of voids, but also reliable fixation of the elements.
Features of mounting foam
Construction foam, as a rule, is stored in aerosol cylinders of various capacities, as it is a mixture of polyurethane substance and gas under pressure in a 3/1 ratio. In such a proportion, foam easily fills any emptiness, cracks, potholes.
The ability of the mounting foam to ensure the designs of thermal insulation, tightness and resistance to various kinds of influences can be enhanced under the condition if it takes into account its peculiarity of collapse under the influence of direct sunlight.
The advantage of the construction foam is its relatively low cost. It is used almost with all building materials - concrete, wood, plastic, glass, brick. The exception is plastics, teflon, silicone, polyethylene. If the foam is applied to these materials, then their surface is pre-treated with acetone. Labor costs and time spent when working with mounting foam minor due to the rapid polymerization.
Note! The disadvantages of the assembly foam include its chemical basis (it takes to ventilate residential premises and the use of protective equipment - gloves, respirator - when working with aerosol), instability in front of ultraviolet rays and natural sediments - rain, snow. Therefore, the slots filled with the mounting foam, it is required to be covered with paint, sealant or to cover with a platband.
It is also worth noting that the cost of the aircraft for a cylinder with foam is significantly higher than the value of the balloon itself, but due to its repeated use, it will pay itself in speed.
Installation foam is single and two-component. When spraying a single-component foam, a chemical reaction occurs with the formation of polyurethane foam capable of transforming into a solid consistency in the medium with 35% humidity, which increases by 250%. The ambient temperature should vary within + 5- + 35 degrees Celsius. Ideally, the air temperature should be 20 degrees, air humidity - 60-80%.
Note! There are types of specialized foam, which is used in winter conditions (at a minus temperature), but under the main condition - sufficient humidity. Otherwise, the mounting foam will not harde it.
Operating principle
Before you understand how to apply the mounting foam, it is important to know the principle of its education. In the aerosol can, the mounting foam is contained in the form of polyurethane ingredients, which are located in the center of the tank. In its lower part there are diisocyanates, in the upper gas. The main condition for the application of the contents of the cylinder is the mixing of components, so before applying the mounting foam, the canopy should be thickened thoroughly. Under the influence of gas, the foam is supplanted from the cylinder outward, increases in the amount due to the interaction of polyurethane and diisocyanates, and then absorbs moisture from the environment and hardens, forming a dense plastics.
Note! For hardening (polymerization), foam requires at least 8 hours, for complete drying - 2nd days. After drying, the foam gives some shrinkage from 5% and higher (50% shrinkage gives household sealant). The smallest shrinkage (5%) allows foam applied with a pneumaticistole.
Preparation of the surface and work with the material
Depending on the scope of work, preference is given or a mounting foam with a tube in a balloon valve ("amateur"), or its application with a pneumaticistole ("Professional"). By chemical composition, such foams do not differ from each other. "Amateur" packaging with a tube will fit "amateur" to close the small cracks, which in a few hours after use comes to disrepair due to the foam hardened in it. Professional Packaging with special threads on the valve to attach the gun is important in the case of a large amount of "fine" work, where accurate, economical dosing in hard-to-reach places is required.
When applied, the foam should be followed by the following order of work:
- Remove trash (sins, etc., the old foam is removed by mechanical way) from the places of application of foam. The foam is used for cracks 2-8 cm wide. The slots up to 2 cm are closed with a different sealant, the cracks are wider than 8 cm decrease.
- Moisten a pulverizer surface to which mounting foam will be applied, not allowing drip moisture.
- The temperature of the cylinder with foam should coincide with the air temperature. For this, the cylinder is lowered for several hours into the container with water of the desired temperature.
- Shake the cylinder for 1 minute to join foam components in a chemical reaction.
- Apply a foam from below to the top of smooth movements by 1/3 of the gap. The balloon should be in the position upside down.
- Deep gaps and large voids are filled with foam layers or 50% with breaks of 10 minutes for foam swelling. The diameter of the foam jet - 1 cm. During the break, as well as during the storage period, the balloon should always be in a vertical position.
- After removing the gun from the cylinder, it is necessary to clean them from the residues of foam using a special solution, apply technical vaseline for processing the screw, nest and a pistol stream.
After hardening the foam, its surplus is removed with a knife, the places of application are protected from exposure to the environment with a layer of paint, sealant or putty, or covered with a platband.
Video
How to work with pistol foam, see below:
When there is a need to fill cracks, holes, seams, various voids, during repair or construction work, a mounting foam is used primarily. This material is widely used as a heater. You can use the mounting foam almost together with any material: stone, iron, wood, plastic. Instructions on how to use construction foam and its properties Consider in the article below.
Properties of mounting foam
The main property of the substance providing him with common use is a high degree of filling and excellent adhesion. The expansion coefficient changes from 10 to 60%. Harding occurs due to the interaction of material with moisture and air. A gas is also added to the cylinder, with which the pressure is created to displace the substance. The main components are methylenediphenyldiisocyanate (MDI), polyol, foaming, as well as catalyst.
Varieties
The material can be divided into one-component and two-component, as well as household and professional. The quality of this strong difference does not have, but the way of exiting foam from the balloon is different. When using professional cylinders, a mounting gun is required: a device controlling the substance consumption. While household are equipped with PVC guide tubes, which are sprayers. In addition, the material has differences on the use temperature:
The disadvantages include sensitivity to ultraviolet rays, under the influence of which it is destroyed and for a long time of frozen. The setting time of the substance is characterized by the duration of polymerization and depends on the volume. The period of frozen is from 8 to 12 hours.
Proper use
A balloon with household assembly foam is designed for one-time use, so it is worth thinking about its effective application, since the unsighted material will be lost. Mounting foam is usually produced in cylinders, tubes, on the surface of which information is applied, on the conditions of application and preparation for operation.
Capacity is 600-800 milliliters. Completely, a disposable tube with special nuts from PVC is coming to the unprofessional cylinder. Due to the notches, the length of the tube can be shortened, and in the case of hard-to-reach places, the extension adapter in the form of a flexible hose is put on.
Before starting work, the balloon shake intensively and remove the cap, serving a kind of fuse. Then it remains only to fasten the plastic tube to the threaded part of the cylinder, which is supplied with it and has internal threads.
It is important to notice: the tube can be used several times. It has a collapsible design and Lego is cleaned with a Schomptol or a piece of thick wire from foam frozen in it.
To improve the degree of expansion of the solution and its hardening, the required amount of moisture contained in the air may be insufficient, therefore additional wetting is applied.
How to use a mounting foam without a pistol? Consider recommendations:
The process itself occurs as follows. The edge of the tube is located approximately at a distance of five centimeters, from the place that you want to fill. I would like to pay attention to what is filled about half the required volume due to the expansion of the substance. Material is extruded by wavy movements. Since the substance increases in size form excess, which are cut with a sharp knife, after solidification.
Precautions when using
Construction foam is not an easy to use material. Since it contains poisonous substances, the work room must be well ventilated. This is a flammable material, so it is impossible to expose to flame. When it is applied, it is necessary to adjust the power of the pressure, it is necessary to put it evenly, so that the contents come out with an equal amount.
The substance in case of hitting the surface is very difficult removed and subsequently can spoil the coating. In case of hitting the non-desired areas, it is necessary to wait for its solidification, but only after that attempts to remove. The residues can be removed with acetone, and at susceptible to solvent coating - to treat special detergents.
It is extremely important to protect both the organs of vision. For this wearing transparent glasses. To protect hands, gloves use gloves, as foam has excellent adhesion with skin.
Disadvantages and advantages of household construction foam
You can note the following:
- increased material consumption due to the impossibility of accurate dosing of its output;
- difficulties when working: the balloon has to keep upside down, girth, which gives a load on the hands and leads to fatigue;
- cost is usually cheaper compared to professional;
- satisfactory result of work.
Thus, if there is no mounting gun in the presence, then nothing will remain, except to use the mounting foam with the tube. The video processing of work can be viewed on numerous sites, on the Internet dedicated to construction.
Mounting foam is one of the most difficult materials: if she fell on cloth, skin, or other surfaces, clean them quite difficult. But it's worth trying.
| Surface | Fresh foam | Frozen foam |
| Skin of hand | Gently removed with a sponge, the residues are removed by the screwdriver - scrub, acetone, solvent, gasoline, saturated with salt solution | Deleted only mechanically. Usually loses its properties and falls off after 2-3 days |
| the cloth | Collected with a stick, the remnants are removed by the cleaner. Important! When processing fabric, stains may remain! |
Large pieces are possible, and the residues are processed by a special solvent for frozen foam, white spirit or gasoline. The stains that appeared are removed by stains. |
| PVC (frames, window sills) | Carefully removed, the surface is wiping with a special PVC cleaner | Carefully cuts off, the surface is cleaned with a special PVC cleaner (usually marked - to install windows) |
| Outdoor coating (linoleum, laminate, parquet) | Remove foam with a spatula, remnants to collect a sponge moistened with a cleaner. Spots may appear! From the wooden surfaces they are removed by grinding, the lacquered coatings cannot be cleaned - they will have to replace them. | After the cutting of the foam, the residues are carefully dissolved with a special cleaner or drug "Dimeksid" (sold in pharmacies). It is necessary to work with such substances in gloves - potent components can cause burns! |
As you already know, the mounting foam is not intended for sealing holes of less than 1 cm - such slots are better filling with silicone sealants.
Alexander Byrgin, RMNT.ru
If you started repairs in the apartment, then at certain stages you have to think about how to use the mounting foam if you have not come across this before. Despite the fact that this material cannot be called innovation in the construction sector, not everyone knows the rules of its application, as well as its advantages and disadvantages.
Nuances when using mounting foam
Not only professional builders are used by the mounting foam, but also people repaid their homes, cottage or other rooms with their own hands. It is necessary for fixing products, improve thermal and sound insulation and sealing.
Due to the extensive area of \u200b\u200buse, the mounting foam is rapidly displacing cement, putty, bitumen and the pass from the construction market. It is easy to explain. If you have never used this product during repair and construction work, it's just because they did not know all its merits, which are very many.
So, here is a list of some advantages that you feel when using mounting foam:
- high thermal insulation;
- short duration of drying;
- ease of work;
- good noise insulation;
- stable sealing;
- elasticity of polyurethane;
- reliable fasteners of products;
- interaction with almost all kinds of building materials, with the exception of silicone, teflon and polyethylene;
- increased volume several times;
- resistance to humidity;
- resistance to ignition;
- poor conduction of electric current;
- filling out all the gaps and cracks that are even in a hard-to-reach place;
- if necessary, excess material can be cut with a knife;
- when used as fasteners there is no need to apply additional fixing agents;
- does not affect chemicals.
However, like any material, foam has some minuses:
- certain requirements of the temperature and humidity during operation;
- instability to the effects of ultraviolet;
- when used, the presence of protective equipment for eyes and hands is required;
- difficult disassembly.
As you can see, there are quite few minuses, moreover, they can be avoided when using technology.
Technology application of material
Before starting work, take care of protection measures, putting gloves and safety glasses. Next, moisten the surface to be treated and shake the cylinder thoroughly several times.
When using a summer foam, it is necessary to ensure that the air temperature is from +5 to +35 degrees.
If all the conditions are met, remove the cover from the cylinder, screw the special tube, then turn the balloon itself. If you handle the vertical hole, the process must be started from below, moving upstairs. Having finished, sprinkle the surface with water, thereby speeding up the process of frozen.
If after work, the gaps remained in the surface, re-pass on them foam and leave it until complete drying (8 hours). After the required time, the excess material can be carefully cut off by the knife.
When using foam as a clamp of products, window or doorways, you must use the struts to avoid deformation.
- To work in the cold time, you need to make a choice in favor of winter or universal foam.
- Foam elements remaining on hand or clothing are removed by a solvent or acetone.
- Do not buy cheap products, because they have low quality, and in the process of dismantling a high probability of damage to surfaces.
- To protect polyurethane from ultraviolet, you can cover it with paint, plastering or sharpening, or use the platbands.
- Work can be performed qualitatively only when the work room is well ventilated and ventilated.
- In order for the processing of horizontal surfaces and hard-to-reach places is less difficult, it is advisable to use the assembly pistol.
- If the processed slit has a width of more than 80 mm, it should be pre-filled with bricks, wood or cement mortar.
- If the gap is opposite with less than 10 mm, it is better to use putty.
Using the information above, you will learn to easily use the mounting foam where necessary. You should not be afraid to start using a stranger material, because there is nothing complicated in this, and realizing the advantages, you just do not find analogue when performing repair and construction work.
In addition, now almost all works that have previously trusted professionals, you can perform independently without special skills and knowledge. Already in a short time you will feel all the benefit of the mounting foam.
Video
In addition to the above information - the next video.