Foam mounting: how to use without a gun

Mounting foam in the modern world is used in almost all types of repair and construction works. It is used during the installation of doors, windows and window sills, plumbing fixtures. Also this building material has found wide application as a heater - it is closed up with cracks and cracks, sandwich panels and various heaters are made of it.

The main advantage of the mounting foam is its convenience and ease of use.

Types of foam

In order to understand how to properly use the mounting foam, consider its varieties. Today, modern industry produces three types of this material: professional and household cylinders, as well as a two-component mounting foam (in this article we will not consider it, since it is used only in production conditions). What is their difference? What kind of preference? How to use a balloon with mounting foam The main criterion for choosing this material is its purpose.

Foam for professional use (pistol)

This material is sold in cylinders of 1.5 liters and differs in that it can only be used with a mounting gun. It is used, as a rule, by professional builders, since such a design makes it possible to perform work quickly and quickly.

Using the gun greatly facilitates the dosage of the material. For single-time work in the home, the material is not very convenient, since after use it is necessary to wash the gun, and this is an additional financial cost. There are manufacturers who fill cylinders with a tube for spraying. But it is not economical to apply professional foam from it, since strong pressure increases its consumption.

Foam for domestic use

Sold in tubes, whose capacity is 0.6-0.8 liters, and is completed with a tube. It is intended for single use. It is convenient for filling small spaces and fixing various installation imperfections. Household montage foam has the same properties as professional use. In the kit must have a tube. If necessary, you can use a balloon and a gun.

The cost of professional foam is much higher than that of household, and this is due mainly to the difference in volume.

Gun construction

Before you learn how to use a can of foam, first let's consider the design of the gun. Irrespective of the manufacturer? Its device is the same and quite simple:

• If the supply of household foam occurs through the PVC tube, then in the gun it is carried out through the metal with a special nozzle - a nozzle. The tip of the tip is 5 times smaller than the cross-section of the delivery tube, thereby increasing the working pressure of the mixture.
• The cylinder is connected via an adapter - an adapter, which is fixed to the gun body.
• The purpose of the adjusting screw is to dispense the mixture outlet.
• The handle of this tool is aluminum or plastic. It is fixed to the trunk with a nut. Thanks to the collapsible design, the gun can be easily cleaned of frozen residues.
• The trigger serves to feed the mixture from the cylinder.

How to install a gun on a gun

In order to learn how to properly use a gun for mounting foam, consider first how to insert it:

• The first thing to do is to warm the foam cylinder in hot water to room temperature and shake it thoroughly for 20-25 seconds to bring the polyurethane foam substance to a homogeneous state. Foam will come out in a homogeneous consistency and in full.

• The container from above is closed with a protective cap, which must be removed before installation. Then place the gun with the handle down. When connecting, firmly hold the device with one hand by the handle, and the other rotational movements on the adapter wind the balloon. The evidence of the connection will be hiss, which indicates the arrival of foam. If this sound was not present, it indicates a malfunction of the inlet ball valve or expiration of the foam itself. To eliminate this problem, the gun will have to be dismantled and cleaned of the dried old material.
• After shaking, the device is put into working position with the handle down. The adjusting screw turns a quarter turn and presses the trigger, sending the barrel into the bag. When the consistency of the foam is normal, start to work.

Foam mounting: how to use a spray gun with a gun?

To work with the mounting foam does not require special skills. It will be enough just once or twice to try something and you will succeed. Consider the sequence of work and some nuances:

• First of all, it is necessary to prepare the surface, on which the mounting foam will be applied, to clean it from dirt and dust. Then abundantly moisten it with water, as the adhesion process passes better with a wet surface. This can be done with a nebulizer.
• Now foam mounting. How to use the gun? There is nothing complicated here. The only thing you need to do is to dose the foam out.
• The nozzle of the gun should be directed to the prepared surface and, smoothly pressing the trigger, give the necessary amount of foam. You should know that the vertical slots are filled from the bottom up. Wide gaps fade in zigzag motions.
• The mixture squeezed out of the gun, when it comes into contact with air, has a property to expand greatly, so fill it with free space no more than 1/3 of the volume. After freezing of the first layer, the non-foamed areas are then better added. Removing excess foam is an additional expense and a waste of time.
• Despite the fact that the tool has a fairly long barrel, with some hard-to-reach places, it can not cope. Here you can use the extension adapter - a kind of flexible hose, which is put on the barrel of the tool.
• After applying the foam, you should wait until it freezes. How much do you need for this time? Typically, a full polymerization of such a building material takes approximately 6-8 hours. So, in any case, the manufacturer claims, however, in practice, as a rule, the situation is somewhat different - the duration of hardening of the mounting foam directly depends on its volume and in some cases reaches 12 hours.
• After the foam has solidified, it is necessary to cut off its excess with a sharp knife or use a saw blade for metal.

Foam montage is an ultraviolet-sensitive material, which under their influence is destroyed, changes color and crumbles. If the polyurethane sealant is used outdoors, then after complete drying and removal of surpluses, it is necessary to cover it with cement mortar.

How to use a mounting foam with a tube?

If the gun is not provided with a gun (in household foam), instead of it a PVC tube is included, which is screwed onto the adapter. The principle of work is identical to professional zapenivaniyu. With this cylinder is not always convenient to work with, but for one-time use it is great. This option will be ideal in this situation, if you plan to seal small seams.

So what are the disadvantages of foam mounting? How to use it, we already found out. Now let's consider the cons of this material:

• It is not possible to dose the supply of the contents of the container, which increases the consumption of the mounting foam.
• Inconvenience of working with this tool. Keep the balloon upside down by hand is quite tedious and even uncomfortable. The hand often gets tired, and constant breaks are needed.

Use of mounting foam without gun and tube

Sometimes professional foam can be used without a gun. How to use the balloon? In this situation, you have to pick up the tube for the foam and figure out how to press the valve. Figuratively, this process can be represented as follows: you need to release air from the bicycle camera so that it can get to the right point and does not catch your hands.

In this case, choose a tube of 3 parts: the first and the third - flexible, and the second - a solid one. The middle part is pressed the valve, the first does not allow the mounting foam to splash, and the third already brings it to the place of processing.

Conclusion

So, we considered foam mounting. How to use this material, we also studied. But do not forget about the protection of hands and face, since the foam is washed quite heavily. It is much cheaper to buy an extra pair of gloves than buying a solvent or walking with soiled hands.