Everything you need to know about creating a roof from foam concrete

Recent years have seen a rise in the use of foam concrete for roofing due to its adaptability and advantages. It is a material that can be utilized in a variety of construction projects because it is strong, lightweight, and energy-efficient. It’s critical to comprehend foam concrete’s characteristics and the steps involved in building a sturdy and dependable structure if you’re thinking about utilizing it for your roof.

Excellent thermal insulation is one of foam concrete’s key benefits; it can help keep your house comfortable all year round. It’s also lightweight, which lessens the strain on the building’s structure and makes it appropriate for both new construction and remodeling. Because of this, foam concrete is a desirable alternative for both builders and homeowners.

Everything you need to know about building a foam concrete roof will be covered in this article. We’ll walk you through every step of the installation process, from the supplies and equipment you’ll need to the precise steps involved. Regardless of your level of experience as a professional builder or do-it-yourself enthusiast, this guide will give you insightful advice on how to make sure your project turns out well.

What is this construction?

The last structural component of a building is its foam concrete roof, which is installed to guarantee its strength, dependability, and protection of the interior from the outside weather while also serving the house’s aesthetic purpose.

On a flat roof, foam concrete serves as a base and can be made in a precast-monolithic manner, monolithic, or in slabs.

The foam concrete layer that has been installed is covered with a "roofing pie," the contents of which are determined by the house’s layout and the climate in which it is situated.

Foam concrete is a contemporary building material that is successfully utilized in wall blocks, floor slabs, and flat roof foundations in civil and industrial construction today because of its improved performance characteristics.

This kind of material is made of a mixture of sand, cement, and foaming agent and is extracted from a highly porous mass. Once it solidifies, it becomes a sturdy, low-weight stone.

Foam concrete can be produced on building sites as well as in factories thanks to modern construction technologies. Consequently, private home developers now have the chance to construct their own foam concrete flat roofs, obtaining a structural and heat-insulating structure with design indicators.

What types and kinds of roofing can be made?

The majority of foam concrete roofs are flat or single-pitched, with an inclination of no more than 14 degrees. The best-looking foam concrete roofs have a single conditional slope that runs from 1 to 4% to the horizon. Runoff is consistently redirected to the roof overhang or water intake points by such a design.

As per established standards, the foam concrete roof, regardless of its steepness, needs to have a "roofing pie."

1. Vapor barrier protects the insulation from household fumes from the premises.
2. Insulation, in one or two layers, depending on the climatic characteristics of the area. Protects the building from heat loss in winter and overheating of premises in the hot season.
3. Screed, provides rigidity of thermal insulation and slope to drains.
4. Waterproofing – protects the base of foam concrete and roofing cake from the effects of precipitation.
5. Finish coating – to create an aesthetic appearance of the roof of the building.

Because of the slight slope of flat roofs, it is not advisable to use piece materials, such as foam blocks, in the arrangement of such a structure because there is a risk of leaks from the many seams between the blocks.

Additionally, because it is technically impossible to fill the foam concrete and compact the "roofing cake," using foam concrete for pitched roofs is unacceptable. Additionally, because the material is weak, the snow load may cause the foam concrete’s inclined base to crack.

When it is advisable to install?

It is best to install such a roof in specific climate zones. It can withstand almost any wind load because it doesn’t need a rafter frame and rests directly on the load-bearing walls, but it can’t handle snow loads or roof water drainage well. Thus, based on meteorological factors, it is better in dry areas with high winds.

Depending on the design approach and intended usage, the foam concrete roof device can be installed as follows:

1. Non-exploitable, which is used only for repair and restoration work. Advantages: simplicity of construction, light weight, low cost per 1 m2, long service life, good repair potential, wide range of applications from summer cottages to high-rise residential, industrial and public buildings. Disadvantage – reduction of the volume of usable area in the building.
2. Usable with a slope of up to 2 degrees, ensures permanent presence of people, can be used for the construction of parking, swimming pool and recreation areas. Advantages: used for permanent presence of people, increasing the usable area of ​​the building, wide areas of application from private large cottages to multi-storey buildings for public, commercial and industrial purposes. Disadvantages – significant cost and high requirements for ensuring high reliability of load-bearing wall structures.
3. Inversion, differs from a conventional flat roof, in the reverse order of the roofing pie: waterproofing is swapped with insulation. Advantages: simplicity of the device, low weight, low cost per 1 m2, the highest protective functions, long service life and repair potential, wide range of applications. Disadvantage – reduction in the volume of usable area in the building.

Aerators, attic, and atticless ventilation systems can be installed to ventilate a foam concrete roof. These types offer two benefits: one can potentially make a non-attic structure exploitable, and the presence of an attic allows for the placement of all required engineering communications on it.

For which buildings is it suitable?

Flat foam concrete roofs are frequently installed by developers in contemporary civil and industrial construction projects. This is explained by how affordable and simple the structure is to install and maintain. According to experts, the following buildings would benefit most from foam concrete roof installations:

• infrastructure structures;
• terraces of private buildings;
• high-rise condominiums;
• public buildings;
• industrial buildings;
• shopping centers;
• wine cellars;
• educational institutions;
• buildings of logistics companies;
• medical institutions.

Wall materials

For foam concrete roofs to be installed, strong load-bearing walls must exist. They have to be completed in compliance with the laws and regulations of the present state. The most significant of which is the standard set by SNiP for various materials for supporting the foam concrete base on load-bearing walls.

Standard overlap values on load-bearing walls are the standard for supporting a foam concrete flat roof structure during installation; an ideal overlap value is 120 mm. Wall material types for a foam concrete roof with a support depth:

• large-format blocks made of concrete grade not lower than M 200 – 90 mm;
• brick -120 mm;
• low-strength blocks of aerated concrete and foam block -150 mm;
• steel load-bearing elements – 70 mm;
• stone walls – up to 150 mm.

If the ideal support value cannot be guaranteed, experts must specify the minimum indicator while accounting for all operating load types, including the area’s seismic resistance, the roof’s specifications, the height of the building, the thickness of the load-bearing wall, and the presence of facing and heat-insulating building materials in the "wall pie."

Because foam concrete is lightweight, strong, and insulating, using it to create a roof is a sensible and effective option. This material provides good thermal and sound insulation, eases construction, and lowers the overall weight of the building. This post will discuss the advantages of foam concrete, how to install it correctly, and important maintenance advice to keep your foam concrete roof in good condition and function as a dependable and affordable roof for a variety of construction projects.

Properties and characteristics of the roof

Given that the foam concrete roof serves multiple protective purposes, it needs to be robust and long-lasting, possess the right qualities, and fulfill the following requirements:

1. Moisture resistance – requires increased moisture protection of the "roofing pie".
2. Fire resistance – non-flammable and does not spread combustion.
3. Frost resistance – not lower than F35.
4. Service life – not less than that of wall structures and the overall service life of the building, more than 50 years, with replacement of soft roofing after 15-25 years, depending on the type of external coating and the composition of the "roofing pie".
5. The optimal type of drainage is selected depending on the climatic characteristics of the area: external systems in southern regions – water is diverted through pipes placed outside along the perimeter of the building or through gutters fixed at the bottom; in the northern and middle climatic zones – an internal slope drainage system diverts water to water intake points in the center of the roof, and then through insulated pipes into the in-house sewerage system.
6. Optimal slope of the drain: 1-4%.
7. For middle and northern climate zones, water inlets on the roof must be heated.
8. The thickness of the screed for soft insulation material is 25 mm, for hard insulation – 15 mm, for bulk insulation – 40 mm with steel reinforcing mesh.
9. Ventilation system of roofing cakes made of bitumen and bitumen-polymer materials – the location of weather vanes by the total area, the step is determined by the composition of the "roofing cake".
10. The foundation of the house and the load-bearing capacity of the walls must ensure the weight of the foam concrete roof.
11. If the height of the building is over 10 m, a parapet must be installed on foam concrete roofs, and for exploited ones, the parapets must be at least 1.2 m high. For a non-exploited roof and a one-story cottage, you can install fencing gratings instead of a parapet.

Requirements for the material for pouring

Since foam concrete serves as the roof’s foundation, the roof must shield it. The roofing pie is designed to withstand atmospheric loads for an extended period of time, shielding the foam concrete and the house’s entire structure from damage.

Requirements for the roof’s foam concrete:

1. Density: 150-1200 kg / m 3 . The first indicator provides high thermal insulation characteristics of the roof, and the second for structures that require high strength characteristics.
2. In terms of environmental friendliness, not less than 5 cl, for comparison, wood has 1 cl, brick – 10 cl, foam concrete – 2 cl.
3. Compressibility strength class – B: from 0.75 -12.5, respectively for thermal insulation and structural strength.
4. Thermal conductivity coefficient: 0.05 – 0.15 W / m ° C. The first indicator is for cold climates, when it is necessary to ensure high thermal insulation characteristics of the roof, the second for structures with high strength characteristics, for example, when installing operational roofs.
5. Water absorption, 10-16% of mass.
6. Frost resistance, F35.

What is needed to make the roofing pie:

1. Ease of installation, maintenance, repair and dismantling.
2. High resistance to mechanical and climatic influences.
3. Excellent waterproofing qualities.
4. Durability from 15 to 60 years.
5. Heat resistance – no deformation at temperatures above 120 °C.
6. Lightweight reinforcing base.
7. Density of the outer layer is not less than 80 g / mm 2 .
8. Light weight, not less than 8 kg / m 2 , with a lower indicator, the layer thickness may be insufficient to provide all protective functions.
9. Resistance to UV rays.
10. Wide operating temperature range from -50 to 110 ° C.
11. Fire and environmental safety, bitumen spontaneous combustion temperature is over 300 C, the material is not dangerous in everyday life and is not subject to decay.
12. Moisture resistance – 100% reliability over the entire roof area.
13. Acoustic comfort – does not create noise during rain, hail and hurricane.
14. Wind resistance must correspond to the climatic characteristics of the location of the facility.

Rules for its preparation

Cement, sand, and water are combined with a unique foam concentrate and hardener to create foam concrete. A barosmixer or foam generator is used for mixing. Air bubbles consistently form in the solution’s thickness during the mixing process, increasing the product’s volume and giving it a lighter, less dense structure.

Since the GOST dosage directly affects the quality of the final foam concrete, all components are dosed in accordance with this standard. The most crucial ingredients in the working mixture are the foaming agents.

They may be:

• protein;
• synthetic.

The first ones cost more and are of better quality:

The latter are more affordable but of lesser quality:

It is recommended to perform the work in air temperatures greater than + 10 C.

High-quality factory foam concrete with a quality certificate is used to pour the foam concrete base, or it can be prepared on the job site in mobile concrete mixing plants.

They can feed prefabricated foam concrete up to 30 meters into the formwork that has been put in place. You can use both traditional systems with an automatic foam generator and small-scale bar installations for this. To obtain the necessary strength and density, they can precisely dose each ingredient in accordance with the recipe.

When working on pouring a foam concrete roof, the following cannot be done:

• to use a mixture obtained by a handicraft method in low-power concrete mixers;
• to pour foam concrete without a quality certificate or having a heterogeneous structure.

Pouring a monolithic structure in small batches and without a break is also unacceptable.

Furthermore regarding the solution’s preparation:

How to calculate the quantity?

The design grade, the overlap area, and the base layer thickness are necessary to determine the volume of foam concrete needed to create a roof. From 100 to 200 meters is where the base layer is taken, depending on the roof structure.

Typical weight composition of the mixture based on brand:

1. Foam concrete brand — D400/D600.
2. Sand — 0.15/0.21 t, price — 300 rubles./t.
3. Cement M500 — 0.30/0.31 t, price — 5000 rubles./t.
4. Water for diluting the mixture — 115/115 l.
5. Water for diluting the foaming agent — 60/55 l.
6. Foaming agent — 1500/1300 g — price — 140 rubles./l.
7. Volume of pores in finished foam concrete — 85/75%.
8. Foam concrete yield — 0.47/0.68 t.
9. Volume of foam concrete — 1.1/1.1 m 3 .

First information needed to compute D400:

1. Roof dimensions: thickness — 150 mm; length — 10 m; width -10 m.
2. Characteristics of reinforcement: cell length and width — 400×200 mm; D-6 mm; number of rows — 2.
3. Formwork board: thickness — 25 mm; length — 6 m; width — 100 mm.
4. Composition of foam concrete: cement in bags — 50 kg, for 1 t — 20 bags, for 1 m 3 — 7 bags.
5. Proportions of foam concrete by composition: cement — 0.30:0.47=0.63; sand — 0.15:0.47=0.31; foaming agent — 0.0015/0.47=0.0031.
6. Cost of building materials: cement – 250 rubles./bag; sand – 300 rubles./t; foaming agent – 140 rubles./l; board – 5500 rubles./1 m 3 ; reinforcement — 20,000 rubles./t.
7. Measure the roof area — 10x10m.

Determine how much foam concrete will be needed to pour the roof:

• Slab area: 100.00 m 2 .
• Volume of foam concrete for the roof: 100×0.15 = 15.00 m 3 .
• Calculation of reinforcement for rows: horizontal — 26 pcs.; vertical – 51 pcs.; total length – 1540 m; total weight — 341.88 kg.
• Formwork area: 6.00 m 2 .
• Lumber: 0.15 m 3 or 10 pcs = 6: (6 x 0.1).
• Building materials: cement in 50 kg bags — 105 pcs. or 5250 kg.
• Cost of cement: 5250 x 5000 = 26250 rubles.
• Sand: 1.8375 t x 300 = 551 rubles.
• Foaming agent: 1.1 x 15 = 15.75 kg.
• Cost of foaming agent: 140 x 15.75 = 2205 rubles.
• Board: 0.15 m 2 x 5500 rubles.= 825 rubles.
• Reinforcement: 341.88 kg x 20000 = 6838 rubles.
• Total cost foam concrete base=36684 rubles.

Equipment and devices for installation

When large volumes of concrete need to be poured, equipment for pouring a monolithic foam roof can be purchased from a retail network. Otherwise, you can rent for a one-time project.

List of instruments and supplies needed for a foam concrete roof:

1. Concrete mixer with a capacity of at least 300 liters.
2. Compressor for supplying compressed air to the foam generator.
3. Concrete pump for supplying mortar to a height.
4. Ready-made removable formwork with telescopic supports.
5. Measuring dishes for maintaining mortar proportions.
6. Buckets.
7. Mortar shovel.
8. Extended rule.
9. Personal protective equipment: gloves, safety glasses and a respirator.
10. Specialized roofer tool.
11. Gas burner for roll material.
12. Foam generator for obtaining foam. This is a device in which air, water and a foaming agent are mixed.

One liter of foam for every one meter three of foam concrete is the maximum amount of foam that can be used. The strength of the completed roof base deteriorates and the hardening time increases if this ratio is exceeded.

Step-by-step instructions for creating

The monolithic foam concrete base device for a roof makes the assumption that the mixture should be poured into a horizontal formwork, which is also known as a "deck" in real life. The formwork can be installed using plywood panels or ready-made prefabricated panel structures. The inner surface of the formwork is covered with a waterproofing film. Detailed instructions for pouring foam concrete on a house roof:

1. Vertical support posts are installed with a step of 1 m and a distance from the walls of 0.2 m. It is better if telescopic posts with height adjustment are used as supports. They can withstand the weight of a foam concrete base up to 2 tons, the cost of renting such formwork is 160 rubles. per 1 m 2 of area.
2. On top of the posts, crossbars are placed in the form of a longitudinal beam, I-beams or channels, capable of holding the formwork.
3. Formwork is laid horizontally on the beams. If a homemade formwork is not used, then additional transverse beams are laid on top of the longitudinal bars.
4. Perfectly fitted moisture-resistant plywood without gaps is laid on top.
5. The formwork is installed in such a way that there is an overlap of the slab on the wall at a distance of at least 150 mm, where a vertical fence of the formwork contour is made.
6. Check the slope level from 1 to 4 degrees with a level.
7. If the base for pouring is made of metal, its surface is lubricated with machine oil, and a wooden base is covered with a film so that after completion of the work it is easy to remove the formwork.
8. A reinforcement frame is installed from 2 meshes of A-500C steel reinforcement with a diameter of up to 12 mm, with 200×400 mm cells, the mesh is knitted with 1.5 mm knitting wire, the rods are connected with an overlap of at least 0.40 m.
9. A necessary element for connecting foam concrete walls and a foam concrete base is a stiffening belt made of a continuous reinforced concrete structure located along the perimeter of the load-bearing walls at the level of the ceilings.
10. The reinforcing mesh should extend onto the load-bearing walls by 150 mm, and the ends of the reinforcing mesh must have a gap with the walls of the vertical formwork along the entire perimeter of at least 25 mm.
11. The bottom layer of the mesh must also have a gap with the formwork of 25 mm from the upper and lower edges of the future foundation. For this, plastic clamps are installed under the lower reinforcing mesh with a step of 1 m at the intersections of the reinforcing bars.
12. The thickness of the base must correspond to the ratio of 1:30, where 1 is the thickness of the base, and 30 is the length of the span. For example, when the span is 6 m, the thickness of the base must be at least 200 mm. In this case, the distance between the reinforcing meshes is from 120 to 125 mm.
13. To ensure compliance with the inter-mesh distance, special clamps are made with a bending tool from a 10 mm rod and with upper and lower shelves of 350 mm and a vertical size of 120 mm. The installation of such clamps is carried out in rows every 1 m with a staggered arrangement.
14. To strengthen the support of the foam concrete base on the roof, install end clamps every 400 mm along the ends of the reinforcement frame.
15. In order for the upper and lower mesh to perceive the load as a single structure, install connectors every 400 mm, and 700 mm from the support zone every 200 mm.
16. It is better to pour foam concrete from a mixer, this will ensure the uniformity and strength of the resulting base for the roof.
17. It is necessary to pour simultaneously without interruptions, in a layer with a working thickness, but not less than 150 mm.
18. Before pouring, frames and boxes for technological openings must be installed in the base: ventilation ducts and chimneys.
19. After pouring the foam concrete, compact the mass by vibration with deep or surface vibrators, operating under compressed air or from the electrical network.
20. Densely reinforced bases are compacted only with external vibrators for 30 – 60 seconds, the exact time will depend on the plasticity and mobility of foam concrete.
21. Excessive vibration of the concrete mixture must not be allowed, as this can cause emergency delamination of foam concrete.
22. The step of rearranging the internal vibrators is taken from 1 – 1.5 of their working radius of action.
23. When performing compaction, it is prohibited to lower the vibrator onto embedded parts or reinforcement structures; in these places, the mixture is compacted manually – by ramming.
24. Vibration is carried out until the foam concrete mixture stops settling, cement milk appears on the surface and the release of air bubbles stops.
25. After pouring, care is taken of the foam concrete to ensure the working temperature of hardening and protect it from rapid drying. To do this, it is covered from exposure to sunlight with tarpaulin or bags and film from rain.
26. Periodically, for 14 days, the concrete is watered at a rate of 0.5 -1 l / m 2 .
27. After the base has completely hardened, the formwork is removed and soft roofing can be installed.

Installation of soft roofing on a flat base

Soft roofing is typically made of bitumen and resinous materials; the former include roofing felt and the latter are bitumen derivatives of roofing felt. When installing, the subsequent procedure is employed:

• gluing rolls on hot bitumen mastics;
• on cold rubber-bitumen and bitumen-polymer adhesives.

Gas burners can be used in a fire method for heating, or in an IR radiation method without a fire. Certain kinds of roofing materials have an adhesive foundation. Traditional foam concrete roofing pie:

1. Foam concrete base.
2. Vapor barrier layer in the form of a vapor barrier membrane, to protect against moist vapors from the room, which are formed during human activity.
3. Penoplex insulation or mineral wool.
4. Waterproofing layer.
5. External protective layer.

A day prior to the commencement of work, the rolls are unrolled to allow for maximum straightening and cutting to the length of the roof, with an additional 250 mm added for bends over the parapet.

Soft roofing installation technique on a foam concrete foundation:

1. Prepare the roof base – remove all dirt.
2. Prime the base using an epoxy primer, at a rate of 0.2 kg / m 2 for a porous surface, for a non-porous surface – 0.12 kg / m 2 . Pre-mix the primer with a low-speed mixer until smooth, and then dilute with water in the desired ratio.
3. Apply the primer to the surface with a paint roller.
4. Perform special reinforcement according to the scheme: a layer of special mastic at a ratio of 14 kg / m 3 , later mount a construction bandage into it and cover with another layer of mastic.
5. Install a vapor barrier layer.
6. Install a layer of insulation.
7. Install a layer of waterproofing and, if necessary, an external coating.

A drainage system must be installed on such roof structures because of the small slope of the roof, which makes it crucial to keep water from building up on it and to guarantee its high-quality drainage into the environment. Its attributes are decided upon during the house’s design in accordance with the flat roof’s design solution and the local climate.

Possible difficulties

It cannot be argued that the foam concrete roof cannot be completed independently, despite the fact that doing so will be extremely challenging. To create a base, modern technologies of this design need expensive equipment and high-quality materials.

Furthermore, only businesses with the necessary permits should perform such work on residential and commercial buildings; otherwise, the object will not be allowed to operate.

If the proportionality of the material’s composition is upset during the manufacturing process, the majority of the challenges and mistakes encountered when building a foam concrete roof arise.

Apart from the mistakes in its creation, this kind of roof is also:

• Violation of the roof slope, poor water drainage;
• the drainage system is not installed correctly, water stagnation on the roof and destruction of the "roofing pie";
• Violation of the design composition of foam concrete;
• incorrectly calculated and installed reinforcement cage;
• the distance for supporting the foam concrete base on the load-bearing walls is not maintained;
• a monolithic belt is not installed on the walls made of lightweight blocks;
• violation of the manufacture of formwork in terms of the choice of materials and the layout of the supports;
• incorrectly calculated volume of the required foam concrete, the pouring of the base was carried out in parts from different batches of foam concrete;
• vibration of the poured surface was not performed;
• violation in the stage of servicing the poured surface, there is no protection from moisture and UV rays;
• incorrectly selected "roofing pie", there is no protection against steam and moisture.

Pros and cons

In comparison to roofs composed of regular concrete and aerated concrete, foam concrete roofs have proven in practice to have unique qualities. They are generally less effective than regular concrete in practically every major category, including strength, durability, and resistance to frost. His advantages over concrete are limited to his weight, cost, and heat-resistant qualities.

Benefits of penoboton roofing over aerated concrete

1. Moisture absorption is the advantages of foam concrete in connection with which he needs a smaller level of hydraulic protection.
2. The environmental safety of foam concrete is slightly higher, since aerated concrete is obtained with a reaction between lime and aluminum, with the release of hydrogen, which continues to be partially released during the operation of the product.
3. Thermal protection is higher in foam concrete.
4. Fire resistance in this indicator both materials are equal and relate to non -combustible.
5. At the cost of foam concrete is much cheaper than aerated concrete.

Drawbacks of Penoboton roofing in contrast to aerated concrete

1. Despite the fact that the density of both materials is in the range from 400 to 1200 kg/ m 3, with the same density, foam concrete is less durable and reliable.
2. Foam concrete has a shrinkage rate of 1 to 3 mm/m, and for aerated concrete it is below 0.5 mm/m.
3. In terms of frost resistance, aerated concrete is 2, and sometimes 3 times more reliable than foam concrete.

Average costs for materials and work

The price of the source materials determines how much a flat foam concrete roof will cost. The primary expenses include the price of foam concrete, transportation, height lifting, and installation labor for setting up the roof base.

The average cost of 150 mm-thick layers of monolithic foam concrete for roofing varies based on the density per 1 m3 / m2.

• 250 kg/ m3 — 3,341/502 rubles.
• 300 kg/ m3 — 3,671/550 rubles.
• 400 kg/ m3 — 4,357/653 rubles.
• 500 kg/ m3 — 4,579/686 rubles.
• 600 kg/ m3 — 4 791/718 RUB.
• 700 kg/ m3 — 4,995/749 RUB.
• 800 kg/ m3 — 5,141/771 RUB.
• 900 kg/ m3 — 5,476/821 RUB.
• 1,000 kg/ m3 — 5,657/848 RUB.

The majority of contractors give discounts for larger quantities. If the customer selects a standard "roofing pie," then the cost will be increased by the costs related to the installation of soft roofing. The tasks involved in installing soft roofing will include:

• preparing the base – cleaning from snow, ice and drying;
• adhesive vapor barrier;
• insulation with a 120 mm slab;
• sloping with wedge-shaped insulation;
• making a separating geotextile layer along the abutment;
• installation of a 1.5 mm PVC membrane;
• installation of water collection funnels and pressure strips.

Such work typically costs 1400 rubles per square meter.

You can use more precise pricing based on 1 m 2 with and without materials to determine the cost of soft roofing for a foam concrete roof in more detail depending on particular installation conditions:

1. Installation of vapor barrier from fused materials – 220/100 rubles.
2. Insulation mineral wool 100 mm in 2 layers with mechanical fixation – 465/165 rubles.
3. Thermal insulation XPS 100 mm in 2 layers with mechanical fixation – 630/130 rubles.
4. Slope with wedge-shaped insulation – 6050/2100 rubles./m 3 .
5. Screed device 580/450 rubles.
6. Device of 2 layers of fused material – 740/440 rubles.
7. Installation of 3 layers from roll material – 1040/620 rubles.
8. Device of abutments up to 0.6 m – 550/325 rubles./m.p.
9. Device of a carpet from a PVC membrane with a ballast / inversion system – 600/150 rubles.
10. Device of a carpet from a PVC membrane with mechanical fastening – 670/220 rub.
11. Waterproofing with TPO membrane — 720/240 rub.

You must carry out the following tasks in order to determine the cost of a 10 x 10 m foam concrete roof with a layer thickness of 150 mm and a density of 600 kg/m3:

1. Laying a foam concrete base per 1 m2, total — 4,791 rubles., including work — 718 rubles.
2. Insulation of vapor barrier — 220/100 rubles.
3. Insulation with 100 mm mineral wool in 2 layers with mechanical fixation — 465/165 rubles.
4. Installation of screed — 580/450 rubles.
5. Installation of 2 layers of fused material — 740/440 rubles.
6. Installation of a PVC membrane carpet with mechanical fastening — 670/220 rubles.
7. Waterproofing with TPO membrane — 720/240 rubles.
8. Total: 8186 rubles. for 1 m 2 .
9. Total: 10x10x8186 = 818600 rubles.

Aspect	Description
What is Foam Concrete?	Foam concrete is a lightweight, durable material made by adding foam to a cement mixture. It’s used in construction for its insulating properties and ease of handling.
Advantages	It’s light, provides excellent insulation, and is easy to work with. It also has good fire resistance and is cost-effective compared to traditional materials.
Disadvantages	It can be less strong than traditional concrete and may require careful handling during installation to avoid damage.
Preparation	Prepare the foam concrete mix by combining cement, water, and foam agent. Ensure proper mixing for consistent foam distribution.
Application	Apply foam concrete to the roof structure, ensuring an even layer. It can be poured or sprayed, depending on the project needs.
Insulation	Foam concrete offers good thermal insulation, helping to keep buildings warm in winter and cool in summer.
Maintenance	Regular inspections are needed to check for any cracks or damage. Foam concrete generally requires minimal maintenance.
Costs	Costs can vary based on the project size and location, but foam concrete is generally more affordable than traditional concrete.
Durability	It’s durable but may need reinforcement for heavy loads or extreme conditions. Proper installation is key to ensuring its longevity.

Foam concrete roofing offers a special combination of advantages that appeal to a lot of homeowners. Due to its lightweight design, it is perfect for both new construction and renovations as it lessens the strain on the building structure. Furthermore, foam concrete offers superior thermal insulation, which can lower energy expenses and help maintain a comfortable interior temperature.

The versatility of foam concrete is one of its best qualities. Because of its easy molding into different shapes, it can be used to create imaginative roof designs that would not be feasible with more conventional materials. Its adaptability and ability to insulate sound combine to make it a sensible and beautiful choice for a variety of architectural designs.

Despite the many benefits of foam concrete, it is imperative to work with knowledgeable experts who are familiar with its unique qualities and installation methods. Application done correctly maximizes the material’s benefits and assures durability. All things considered, foam concrete is a cutting-edge and contemporary option that can improve the performance and aesthetics of any building’s roof.

Video on the topic

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