Mistakes in Choosing a foam, the consequences of which are best avoided

Polyurethane foam is used for sealing construction joints, void filling and sealing joints during installation of windows and doors. Often manufacturers mislead consumers an attractive view of the balloon. How to avoid mistakes when selecting a foam?

Structure and working principle of foam

The foam composition contained chemical processes accelerators (catalysts and hardeners), in addition, additives that protect against fire and temperature difference.

Polyurethane foam can be one-component (Entering a chemical reaction with moisture and air spray) and Professional two component.

In the first case the foam hardens within days depending on humidity, because it is difficult to control chemical reactions. Professional foam occurs when the activation of the two components very quickly and freezes for half an hour. It is used entirely for large volumes of construction and installation of windows, because the spray should be used immediately.

Errors in the selection of foam and their consequences

Household foam (with a tube) is used for the cup minor repairs and one-time work, while its professional version (with a gun) requires the use of skills.

It is believed that the home - for beginners, while the second option is more professional, for masters with skill. This is used by manufacturers by increasing the volume of the filler gas cartridge and reducing the amount of active polymeric substances, which significantly reduces the yield of the resulting foam. When this value exceeds pistol cartridge price for single use, so beginners it is better to use a curing agent in cans with a straw.

• Operating temperature regime required to indicate on the can, depending on the foam it can be year (+5 to +35 degrees), winter (from -10 to -35 degrees), And year-round between these values. This temperature is used for the execution of works, exploitation withstand wider temperature range. Working with a hardener in winter will reduce the possible foam outlet and the cold outside, so it will be less.
• Attractive labels of large output of finished foam from the canister is difficult to verify, it is on this and designed ads. Often, the gas volume exceeds the volume of polymeric substances and can not measure this parameter, which is used by manufacturers.

• When purchasing a note balloon weightIt should be weighty and polymer soderzhimoy- roll back and forth. Compare weight of two cylinders of different manufacturers.
• Note the shelf life of the cartridge. Overdue foam hardens before its intended use, and you just can not use it.

• Prefer trusted manufacturers of foam -Makrofleks, Titan, Proflex, Soudan, Penosil.

The better known and promoted the brand manufacturer, the higher the price, but the foam from unknown manufacturers can be made with violation of the technology, and in the pursuit of price, you can not get the result, which expected. Note the presence of a certificate of quality, especially in the procurement of large amounts of foam, it will protect you from low-quality fakes, especially when purchasing foam from unknown manufacturers, if you do not want to overpay for the brand, and fame.

Choosing an unnamed assembly foam, you risk getting a low-quality version of the seal, only suitable for small-scale construction work. The use of high-quality foam from trusted manufacturers will get a durable result.