Polyurethane foam without toluene - choose at any time of year !

What the new settler in the building market?

Polyurethane foam - a self-expanding mass that hardens under the influence of moisture. It is used for fixing door and window frames, mounting plates and polystyrene foam.When using it you do not need screws or nails.

It has three main functions: sealing (filling cracks and voids), sound (filling spaces and gaps between abutting pipes), bonding.Foam is divided according to the method of application to professional and manual.

The first is called the pistol, because to work with it requires a special gun.It is very convenient and helps treat hard to reach places.But it needs to be cleaned a special washing after each use, and that the extra costs.

Manual foam does not require additional tools, as it has a special one-off tube to the lever adapter, which is attached to the cylinder cap.

Polyurethane foam without toluene - divide seasonal

There are three main types, differing by application temperature - summer, winter and all season.

Winter foam differs significantly from the summer on the chemical composition.It can be used for mounting and sealing works at temperatures from -18 ° C to +35 ° C.In cold conditions, it does not break up and make the most out of the balloon.But it should not be colder than 0 ° C, and preferably if the temperature is about +10 ° C.In operation, the surface should not be in the ice or snow.

The summer can be operated at a temperature range of +5 ° C to +35 ° C.It should be noted that the operating temperature of any foam is from -50 ° C to +90 ° C.All-season took the best of the winter and summer.With its special formula the foam comes out in full, a rapid polymerization process.But it can work in the widest possible range of temperatures from -10 ° C to +40 ° C.

addition to thermal characteristics, determining the quality of the foam, you should pay attention for a few more features.For example, its expansion.Though summer, though all season, foam at the first exit expanding.Then, during drying, it again increases in volume.It was the second blow-foam affects the quality of the sealing seam.If she strongly expand, then it may have a negative impact on the design of the windows, doors or the like

Another important viscosity and fluidity of the composition.It may affect the ability to stay on a vertical plane and sliding down.The only thing this ability can be determined only at the time of use.

Polyurethane foam - describe the material

As with any product, the foam has its advantages and disadvantages.Advantages:

• ease of use;
• and water vapor permeability;
• resistance to many chemicals;
• elasticity;
• adhesion to most surfaces;
• good sound and heat insulation;
• biological neutrality.

She also has disadvantages:

• destroyed under ultraviolet light;
• complexity of disposal;
• has its own requirements for the humidity and temperature of air and cylinder;
• should be used when working goggles and gloves.

Whether used summer foam or any other , should adhere to certain rules in dealing with it.

1. to expanded foam before using the need to shake the bottle.
2. cylinder must be heated in warm water up to +5 ° C, if the work will occur during freezing weather.
3. pre-treat the surface with water to accelerate hardening.
4. Zapenivat gap should be 1/3, as the foam will expand in the drying process.
5. If vertical openings are sealed, the work is better to start from the bottom and slowly climb up.
6. excess can be cut off one hour after completion of the work.Drying occurs after 7-8 hours.
7. When the room should be well ventilated.
8. forbidden to carry out work near the fire.