The use of foam

When carrying out construction work or even basic repairs we have to stykatsya with foam. Scope of foam:-Filling the holes, gaps, cracks and cavities in different building materials. -Sealing of cavities and joints between different building materials. -Reduce air permeability of the exterior walls of buildings, as well as improved sound insulation. -Material for the mechanical fixing and insulation of doors and window frames. -Sealing and securing channels for laying pipes in the walls of various materials. Rules for working with foam 1. Installation work is desirable to perform in a warm and dry season at plus air temperature from +5 to +30 ° C. Under such conditions, the polymerization process is a lot better and faster. There are, however, and special winter foam, but they are a special subject. 2. Remember that working with foam required to wear gloves! After contact with skin should be thoroughly wash and dry hands. 3. Need to examine the object of forthcoming: assembly foam is best used for sealing cracks in widths from 1 to 8, see if the gap size more appropriate to take the cheaper materials (wood, brick, plastic, foam) to narrow the gap. If the gap is less than 1 cm, use sealants, fillings, etc. 4. Previously, before installation, handle the gap with water. To do this, it is quite suitable conventional spray, which the hostess used to moisten linen. Why do I need moisture? The fact that the hardening foam affects not only the ambient temperature, and humidity. So, the ideal conditions for the use of polyurethane foam is the temperature of +20 ° C and humidity of 60 to 80%. 5. Must thoroughly shake the container with foam, and this should be done at least for a minute. This is needed to ensure that the contents of the container has a homogeneous mass - because polyurethane foam is composed of different chemical components, which should mix well. 6. How to work with polyurethane foam as follows: remove the cap, wind pipe to the adapter and turn over bottle upside down. It is in this situation it must be for the entire running time. And here's why: gas, displacing the mounting foam, significantly lighter than other components. Therefore, if the situation can upside down components of the foam is better mixed. 7. After cooking, you can apply the foam. Zapenivat gap recommended by one-third of their depth, because the foam is inherent in mounting a substantial increase in volume. If zapenivayutsya vertical cracks, begin work better than the bottom and gradually go up (in this case, the foam will be more liquid than to keep). 8. Then you have to sprinkle water, foam, since the high humidity the foam quickly catches. 9. After about 30 minutes if the foam is not enough, add a little more. But do not overdo it again, there still expand. All excess foam to akuratno cut with a knife. Therefore, to fill much more foam is not necessary since et.d.rom money thrown away. Cut off any excess foam can usually be an hour after application. Than the fluidity of foam more, the time and before removing excess foam is also greater. 10. The foam hardens instantly to mind, but it is deceptive, for the full curing of foam must be at least 8 hours. 11. And one more important detail: the polyurethane foam is afraid of exposure to ultraviolet rays. Therefore, after setting the surface magnetic field should be treated with sealant, paint, plaster, putty, cement, protect casings, etc. The foam is supplied in cartridges for the pistol and cartridges with nozzle (tube). In the case of foam with a gun, then this foam is called a professional because the builders are very convenient to use a gun while working on large areas, as well as continuously dosed flow of foam into the gap, which saves the cost of the foam. The use of the gun allows you to leave for a month unfinished bottle with foam, and then continue. Disconnect the cylinder from the gun is not required. If the foam and the work is over, the gun was washed with special cleaners that are sold in cans and attached to the gun instead of foam. Spray foam to the nozzle - a one-time option to use non-professionals, or when one-time jobs.