How to insulate walls with polyurethane. Polyurethane insulation - a relatively young and promising method
Warmth and comfort in the house is impossible without properly executed thermal insulation. And one of the main tasks at this stage of construction is the selection of insulation materials. Fortunately, today the market is literally replete with various options for insulation on any wallet. However, in this article we will talk about a relatively new, but rather promising way of building insulation using polyurethane.
- Polyurethane as insulation
- Advantages and disadvantages of polyurethane
- External wall insulation with polyurethane video
- Internal wall insulation with polyurethane video
- Polyurethane foam insulation
Polyurethane as insulation
Today, such a versatile material as polyurethane is used in many industries: in the manufacture of automobiles, in medicine, and, of course, in construction. Indeed, at present, builders are more and more often found who prefer to use polyurethane for thermal insulation work in houses and apartments. Actually, the growing popularity of this material by leaps and bounds is quite justified if you get to know its characteristics more closely.
Firstly, polyurethane spraying allows you to create a thermal insulation layer even in the most inaccessible places or, for example, on surfaces of complex shapes.
Secondly, the material adheres perfectly to vertical surfaces, which also makes it one of the best options for wall insulation.
Thirdly, polyurethane is perfect for roof insulation. When insulating the roof with polyurethane, you can not only get rid of the rather laborious work that could not be avoided when warming with any other material, but also save up to 50% of money.
Advantages and disadvantages of polyurethane
Of course, like any building material, polyurethane has its advantages and disadvantages. Of the most attractive advantages of this material can be identified:
- High adhesion. Due to this undeniable advantage, polyurethane can be safely used not only for wall insulation, but also for thermal insulation of any vertical surfaces or surfaces with a slope. Also, polyurethane adheres perfectly to surfaces made of metal, glass or concrete.
- Strength and expansion of the material during application. Thanks to these features, you can be calm, the insulation will not only fill all the bumps or cavities on the surface, but it will also last for many years without losing its characteristics.
- High rates of heat saving.
- Affordable price.
- Environmental friendliness.
- Soundproofing.
- Ease of work allows you to do polyurethane insulation with your own hands.
There are not so many disadvantages of polyurethane. Among the main ones can be noted:
- Low fire safety.
- The need to spend money on a special spraying installation, necessary for applying polyurethane to the wall.
I would also like to note the fact that the total service life of polyurethane is an average of 15-20 years. Moreover, after five years of operation, the material may lose 2-30% of its thermal insulation properties. Therefore, if you want your insulation to retain its properties longer, it is recommended to purchase polyurethane with a closed cell structure.
External wall insulation with polyurethane
Polyurethane foam is an ideal material for external thermal insulation of walls. Warming with polyurethane will prevent freezing, condensation or thermal erosion, and blowing. In addition, polyurethane foam is able to effectively withstand the effects of various environments, including any weather phenomena, direct sunlight, acids and alkalis. Also, the material is not susceptible to rot or insects or rodents.
At the same time, with the help of polyurethane foam, it is possible to carry out thermal insulation of both brick houses and a wooden bath. For better adhesion to the surface, it is recommended to moisten it slightly before spraying the polyurethane.
Note, when spraying, the insulation is applied to the wall using specialized equipment with a density of 30-60 per cubic meter. If necessary, a second coat can also be applied. However, as a rule, double application of insulation is required only for thermal insulation of the roof, as well as for more reliable sound insulation.
Internal wall insulation with polyurethane
When there is no way to insulate the external facade of the building, you have to resort to thermal insulation of the internal walls. But here it is necessary to approach the choice of material with particular care, given its environmental friendliness and, of course, volume. After all, when warming the outer walls, you can not really think about the volume of material, another thing is the internal warming of the walls, when illiterate material can eat a lot of usable area.
In this case, one of the best options is polyurethane, since it will allow you to save as much of the useful space in the room as possible without compromising thermal insulation. In addition, the material is environmentally friendly, which is also an indisputable advantage in the insulation of internal walls.
To conduct thermal insulation of the internal walls using polyurethane foam, it is necessary to first prepare the surface, removing any coatings from it. Next, you need to moisten the surface of the wall so that when spraying, the polyurethane grip is more reliable with the surface. After our wall is perfectly clean and slightly moistened, we can evenly apply a layer of mounting foam. After the foam applied by us is completely dry and hardens, you need to cover it with a primer. This will allow the cladding to better grasp the surface. Then you can decorate the wall with the materials most familiar to you with wallpaper, lining, paint, etc.
Separately, I would like to note that if you plan to sheathe the walls with drywall, then the profiles of the crate must be installed before the walls are insulated with polyurethane.
Polyurethane foam insulation
When warming with this material, the expanding mass should be poured into the gap between the walls. For this purpose, small holes are made in the wall, where polyurethane in liquid form is supplied using a special filling system. In this case, polyurethane will act not only as a heater, but also as a connector between two layers of masonry.
It is worth noting that this method of warming will significantly reduce the time and money costs for the repair of old houses. In addition, with the help of polyurethane it will be possible not only to achieve a heat-insulating effect, but also to strengthen the walls of the building and provide reliable sealing.
