Mounting foam

You must have seen it, passing by the buildings under construction. It looks like a whimsically frozen mass of foam, and to the touch - like a stone. It replaced the cement and pakle. She is this mounting foam, one-component polyurethane foam sealant. How to buy a good mounting foam?

At first, Why do you need a sealant? The answer is very simple - this substance is very convenientto fill various slits. The tightness of the foam connection to the surface guarantees excellent sealing, sound and heat insulating qualities of this approach.

Mounting foam is realized in aerosolballoons. In the tank there is a liquid - a preponderant and a propellant gas - a propellant. By means of a special piston of the assembly pistol, the gas, under the influence of compression, displaces the liquid preponder, which fills all necessary, even the smallest, voids. Under the influence of air humidity, the liquid polymerizes, i. E. freezes.

What good is the mounting foam?

Advantages of mounting foam are many, but the home master, perhaps, will be interested in such advantages of mounting foam as:

easy foam penetration even in the most difficult and narrow places;

rapid congealing and the acquisition of hardness and strength;

Accessibility for work with any building materials.

If you decide to use a mounting foam for your needs, then always remember that this sealant triple increases its volume in comparison with the initial state. Therefore, be sure to fill the spacers when sealing the voids formed during the installation of doors or windows. This will help avoid deformation of the structure.

To foam well filled cavities and become a durable material, you should choose only quality foam. How to determine the quality of the mounting foam?

Quality foam is well fixed onie, it does not flow off. High-quality assembly foam has a slight shrinkage, good elasticity, sufficient density. So, a cylinder with a mounting foam of 750 ml should weigh 850-920 g. At low temperatures, good quality foam should not "crumble", which is especially important for outdoor construction or repair work.

In addition, in high-quality assembly foamgas-propellant should not be harmful to human health or the environment, so you should beware of cheap counterfeits. Learn about the properties of the mounting foam from a particular manufacturer can be consulted in a store or on the Internet. Read the instructions carefully before using foam!