How to make roof insulation with polyurethane foam - methods and rules of work

The innovative technology of insulation with polyurethane foam is the best suited for thermal insulation of the roof. Our company offers services for spraying a two-component polyurethane foam mixture. We are ready to work with roofs of any type and size, as well as with non-standard solutions. The fact is that the features of the spraying technology make it possible to carry out thermal insulation even in the most difficult conditions, while not reducing the quality of the work performed.

Practice shows that high-quality roof insulation can significantly reduce energy consumption. Moreover, in the case of insufficient roof sealing, in the cold season, condensation may appear on the surface, which will not only contribute to the appearance of harmful microorganisms, but also gradually destroy construction and finishing materials.

As for polyurethane foam, it penetrates into absolutely all hard-to-reach places and guarantees complete insulation. Work can be carried out both on a flat and on a mansard and pitched roof of a residential building, an outbuilding or an industrial facility.

For all questions, call: 8 (968) 868-81-93 or leave a request:

Technology advantages

  • Roof insulation with polyurethane foam does not imply the dismantling of the old coating, which will save money, effort and time.
  • Polyurethane foam can be applied to any surface configuration, since the material has high adhesion rates.
  • High speed of insulation, which reaches up to 500 square meters per day.
  • Low coefficient of water absorption, which is extremely important for the roof.
  • The structure of the material allows air to pass through well, which contributes to the normalization of the indoor microclimate.
  • Polyurethane foam is not a medium for the development of insects, rodents and pathogenic microorganisms.
  • Low coefficient of thermal conductivity, allowing you to keep cool inside the house in the warm season, and warm in the cold season.
  • The porous structure further enhances sound insulation.
  • The possibility of insulating both the outer and inner sides.

Is it possible to insulate the attic PPU

The presence of the attic already indicates that its insulation is required. It is foolish to have a second floor and not use it to expand living space. Even if it is not supposed to live in these rooms in winter, you still cannot do without this procedure. Heat from the lower floor tends upward. If the roof is not insulated, condensation forms when it encounters cold air. The attic will be constantly wet, fungus will appear, and the wooden elements of the rafters will quickly rot.

The properties of polyurethane foam determine the material as an excellent insulation for the attic

With regard to polyurethane foam, we can say that this is an ordinary polyurethane foam, only for such works it is used in large volumes. For the attic, PPU is considered an excellent choice. In a solidified state, the material forms many airtight pores with air, due to which the insulating properties are improved. Cured polyurethane foam is vapor and moisture resistant. He does not need steam and waterproofing. Due to the expansion, the PUF fills all hard-to-reach areas. Foam insulation is considered safe, since the material is environmentally friendly, not inclined to maintain combustion. All of these qualities meet the requirements for attic thermal insulation. It is safe to say that PPU is suitable for work.

A feature of the attic is the complex shape of the roof. The use of rigid slabs is not possible in some areas. Rolled materials slide off the slopes, the mineral wool is caked.A popular option for insulation is laying basalt slabs, but they must be protected from moisture on both sides with membranes. With polyurethane foam, everything is simple. Spray foam on surfaces of any complexity. Even on the fractures of the roof, a single sealed layer is formed.

Important! If the insulation is made with polyurethane foam, the attic stops "breathing". The effect of a thermos is created. Arrangement of ventilation will be required, otherwise dampness will form. 1-2 layers of polyurethane foam on the roof of the attic allows you to save up to 30% heat

In a non-residential attic, it is enough to spray a couple of layers of polyurethane foam, which will already save up to 30% of heat. However, it is important to know that UV foam breaks down. After warming, you will definitely have to fix the finishing sheathing, for example, lining.

Another nuance is the choice of insulation technology. PPU is of three types. Foam differs in hardness: soft, medium and high. The classical technology of insulation is based on the use of PU foam of the same stiffness. Polyurethane foam is sprayed in several layers. In complex technology, several types of foam are used, only the layers are sprayed alternately. Rigid PU foam is always used for the first layer. Its thickness is from 3 to 5 cm. Subsequent layers are sprayed from soft foam. Their thickness varies from 5 to 8 cm.

WATERPROOFING WITH POLYUREA

The price for waterproofing with polyurea depends on:

  • the thickness of the layer of polyurea and the applied polyurea;
  • the scope of work on surface preparation (grinding, dedusting, washing);
  • the need to apply UV resistant enamel;
  • and many other factors ...
Waterproofing with polyurea Huntsman or BasfRoof waterproofingWaterproofing of floors, parking lotsWaterproofing foundation, plinthWaterproofing of tanks, containers, pools
Spraying polyurea with a middle layer of 2 mmfrom 1500 rub / m2from 1500 rub / m2from 1500 rub / m2from 1500 rub / m2

What is PPU

Polyurethane foam (abbreviated as polyurethane foam) is a type of foamed plastic with a fine-mesh structure filled with gas. About 98% of the material is a mixture of carbon dioxide and air, and 2% is hardened plastic. Due to this structure, polyurethane foam is characterized by low weight, low hygroscopicity and an insignificant degree of thermal conductivity.

PPU roof insulation

Roof insulation with polyurethane is performed using two types of this material:

  1. Elastic PU foam... So it is customary to call rolls or slabs of a foamed heat insulator, the basis of which is plastic with a maximum density of 20 kilograms per cubic meter. The cells of the elastic material have an open structure - for this reason, air moves in them and the polyurethane foam bends without problems and quickly restores its original shape. Usually, this type of polyurethane foam has a density of 8-15 kg / cu. m. They carry out internal and external insulation of roof slopes, it has excellent sound insulation. To insulate the roof with polyurethane foam, strips of this heat insulator of the required size are laid between the legs of the rafters.
  2. PPU rigid type... This material includes insulation with a foam plastic base, the structure of which is composed of small cells. It contains 2-3% solids. Due to its structure, rigid polyurethane foam does not deform, it is resistant to various mechanical and chemical damage, and weighs a little. Its density is 30-60 kg / cubic meter. m.

PPu roof insulation

The price of PPU roof insulation largely depends on the size of the heat-insulating layer and the square of the slopes. Roofers with extensive experience recommend laying it with a thickness of 50-100 millimeters.

Cost of spraying polyurethane foam

Density of polyurethane foam:

12 - 22 kg / m3

From 375 rub / m2

  • 5 cm - 450 rubles / m2
  • 10 cm - 800 rubles / m2
  • 15 cm - 1225 rubles / m2

to order

Density of polyurethane foam:

35 - 40 kg / m3

From 700 rub / m2

  • 5 cm - 750 rubles / m2
  • 8 cm - 1200 rubles / m2
  • 10 cm - 1400 rubles / m2

to order

Density of polyurethane foam:

60 - 75 kg / m3

From 1300 rub / m2

  • 5 cm - 1350 rubles / m2
  • 8 cm - 2120 rubles / m2
  • 10 cm - 2600 rubles / m2

to order
For all questions, call: 8 (968) 868-81-93 or leave a request:

Insulate the roof with polyurethane foam, foam

Following physical laws, heated air initially tends upward. For this reason, roofs are the most vulnerable element of the entire building structure, and they account for up to 40% of all heat losses.

Roof insulation with polyurethane foam

In order to select the most suitable material and insulate the roof structure, the shape of the roof should be evaluated. It can be:

  • flat roofs;
  • pitched (one-, two- or four-pitched);
  • hip and half-hip roofs;
  • tent;
  • sawtooth roofs;
  • attic;
  • arched roofs;
  • cross;
  • arched roofs;
  • rainbow;
  • domed roofs;
  • conical;
  • roofs like pagoda, bell tower and others.

The nature of the building is of no less importance. For example, approaches to roof insulation of residential and country houses, office buildings, shopping centers, churches will differ.

Specialists of our company use a universal roof insulation based on closed-cell polyurethane foam (PPU). It fits absolutely all buildings and roof configurations.

Why is it profitable to insulate the roof with polyurethane foam (PPU)?

Polyurethane foam is an environmentally friendly material. The weight of the polyurethane foam is small, so it does not put additional stress on the base. At the same time, insulation with polyurethane foam is more effective than when using other materials, since it has high thermal insulation properties.

Insulate the PPU roof profitable for several reasons at once:

  • polyurethane foam has the lowest thermal conductivity, due to which polyurethane foam retains much more heat than analogs;
  • polyurethane foam is durable - the average service life of polyurethane foam reaches 50 years;
  • polyurethane foam is universal - polyurethane foam is compatible with various types of finishing materials;
  • insulation with polyurethane foam is practical - PU foam can be applied to the entire surface, even in hard-to-reach places;
  • polyurethane foam is effective - polyurethane foam insulation excludes the formation of a cold bridge, since the foam adheres tightly to the surface of the base;
  • polyurethane foam is hygroscopic - polyurethane foam does not absorb moisture, therefore, it is not subject to decay;
  • insulation with polyurethane foam is environmentally friendly - when heated, PU foam does not emit toxic substances, does not support combustion;
  • insulation based on polyurethane foam is easy to apply - so that insulate the roof with foam PPU, it is not necessary to additionally arrange a vapor barrier or wind protection.

If you need to insulate the roof with polyurethane foam, then you need to take into account one more point - the brand of the PPU manufacturer. Different manufacturers of polyurethane foam may have different thermal conductivity characteristics. The difference in this indicator for polyurethane foam of different brands can be up to 40%.

VIDEO: Choosing a heater for the attic - which one is better

has been working on the market for a long time, we have selected the best brands of polyurethane foam for our customers, so we can guarantee high quality and durability of insulation. Employees of the company in their work use polyurethane foam only proven, well-proven brands. We insulate roofs with BASF, DOW, Huntsman polyurethane foam. An official guarantee is provided for all works on insulation of PPU roofs.

To get additional advice on technologies for insulating building elements with polyurethane foam, to calculate the cost of polyurethane foam and its application, contact our manager in any way convenient for you.

Prices for polyurethane foam insulation for 1m²

Density of polyurethane foam 15-20kg / m3
From 500 rubles / m2

To order

  • 5cm - 500 rubles. / m2
  • 10cm - 700 rubles. / m2
  • 15cm - 1300 rubles. / m2

Density of polyurethane foam 35-40kg / m3

From 500 rubles / m2

To order

  • 3cm - 500 rubles. / m2
  • 5cm - 750 rubles. / m2
  • 10cm - 1400 rubles. / m2

Density of polyurethane foam 60-70kg / m3

From 900 rubles / m2

To order

  • 3cm - 900 rubles. / m2
  • 5cm - 1600 rubles. / m2
  • 10cm - 3000 rubles. / m2

Note!

The exact cost is only after leaving the site and familiarizing our specialist with the specifics of the upcoming work. Depends on the area, surface evenness, humidity, surface accessibility, type of equipment used.

Why choose EKO PPU LLC

  • A staff of experienced and competent employees.
  • We always work for the result and are proud of our capabilities.
  • We provide a flexible pricing policy, which depends on many factors.
  • We are ready to work with any projects and provide turnkey work.
  • We are happy to cooperate with both commercial entities and private individuals.
  • We are always prompt and accurate, therefore we guarantee the quality of work.

Order a roof insulation service with polyurethane foam right now. Protect the premises from the harmful effects of the environment. Saving on the coolant will lead to a quick payback of the service.

INSULATION WITH POLYURETHANE FOAM

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Thermal insulation of the roof with polyurethane foam: options and possibilities

Thermal insulation of the roof with polyurethane foam is a universal option.The material and technology of its application makes it possible to implement any solutions, to obtain an effective and long-term result. We confirm this on the basis of an assessment of the dynamics of insulated objects over a period of 14 years.

PPU can really be sprayed on any prepared surface of any shape. That is, the technology really allows you to work with both flat and pitched roofs, to perform both roof insulation from corrugated board (as well as folded, etc.), and thermal insulation on a reinforced concrete base.

Thermal insulation of polyurethane foam roof from corrugated board from below

If we talk about flat roofs, the mechanical strength of the foam is such that it allows you to insulate any type of roof - soft or exploited (see figures). At the same time, the elasticity of PU foam is sufficient to compensate for movement of structures without rupture of the insulation itself. The best option for insulating roofs from the outside is thermal insulation with polyurethane foam with waterproofing from PM.

The vapor permeability of sprayed polyurethane foam with closed cells is so low that PU foam can be safely used to insulate the roof from the inside without the use of vapor barrier membranes (see figures). This is the only insulation that has such versatility in the absence of negative consequences in the form of condensation on the base and foci of the fungus.

It doesn't matter which method we chose - insulation of the roof with foam from the inside or from the outside. In any case, the ideal for heating engineers is the absence of unventilated voids between the base and the insulation. When spraying, polyurethane foam adheres to the base, filling all the "pits", and forms a kind of monolith with the base without air gaps. There are no such voids - there is no condensation, and there are no conditions for the occurrence of ice and the destruction of the insulation and damage to the roof.

In finished form, sprayed polyurethane foam forms a seamless coating over the entire insulated area, including abutments, outlets of utilities, etc. There are no cold bridges - there are uniform characteristics throughout the entire volume of the insulation and effective thermal insulation. In addition, polyurethane foam is distinguished by low moisture absorption, and it “does not get wet” even if the waterproofing is damaged.

A thin and light layer is required for effective thermal insulation. 50 mm polyurethane foam (~ 2.5 kg / m2) is equivalent to 80-90 mm polystyrene foam (~ 3-5 kg ​​/ m2), or 100-120 mm (18-25 kg / m2) mineral wool board, or 500 mm expanded clay (200 -400 kg / m2).

The low weight of PU foam is a great advantage when it comes to insulating a roof with a small bearing capacity, as well as when repairing "aged" buildings, when every kilogram "has a weight".

Rating
( 1 estimate, average 4 of 5 )

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