How to do thermal insulation: foam or mineral wool?
Let’s leave the lyrical digressions and go straight to the facts.
Each material has a thermal conductivity, which is measured in W / m * K. The lower the thermal conductivity of the material, the more it resists heat transfer.
And here are the numbers. The data are presented in accordance with the state building codes of Ukraine “Thermal insulation of buildings” DNB B.2.6-31: 2006
Comparative characteristics of mineral wool and foam.
Polystyrene with a density of 35 kg / cubic meter under operating conditions, that is, not a dry material, has a coefficient of thermal conductivity of 0.050 W / m * K. Cotton wool with a mineral density of 145 kg / cubic meter – 0.048 W / m * K. The heat resistance of the wall is equal to the thickness of the wall divided by its coefficient of thermal conductivity.
Suppose you have a wall of reinforced concrete, thermal conductivity of 1.69 W / m * K, and its thickness is 20 cm, like a balcony partition of new buildings in Pesochin. Then the heat resistance of such a wall is 0.118 square meters * K / W.
Kharkiv is located in the temperature zone No. 1, where the minimum allowable value of heat resistance for external walls should be 2.8 square meters * K / W.
Suppose you decided to continue the apartment, removed the balcony front wall, glazed the balcony, and decided to insulate its partitions. Mineral wool density of 145 kg / cubic meter Rockwoll FACADE BATTS thickness of 100 mm. 0.1 m of the wall we divide 0.048 W / m * K = 2.083 sq. M. * K / W – this is the heat resistance of a pure insulation + 0.118 sq. * K / W. The heat resistance of a reinforced concrete wall = 2.201 sq. * K / W – received a total heat resistance
Polyfoam with a density of 35 kg / cubic meter 100 mm thick. 0.1 m of the wall we divide 0.050 W / m * K = 2,000 sq. M * K / W – this is the heat resistance of a pure insulation + 0.118 sq. * K / W. The heat resistance of a reinforced concrete wall = 2.118 sq. * K / W – we got the total heat resistance
The result: a difference of 0.083 square meters * K / W. This is 3.77%. That is, with the indicated manufacturers and characteristics, mineral wool is “warmer” than foam by less than 4%, which cannot be said about its price.
Polyfoam or mineral wool – you decide. The heat resistance of these two materials is not very different, but they differ in price. The significant advantages of mineral wool over foam plastic is that the mineral wool does not burn at all and is environmentally friendly. However, be careful when choosing a manufacturer and pay attention to the water absorption of mineral wool, the lower it is, the better.
| Prices for 2020 | ||
| Thermal insulation | ||
| Thermal imaging examination of the apartment from 1000 UAH | ||
| Window jambs: 250 UAH per meter linear (with material) or do not subtract the area of windows from the total area of insulation. | ||
| Balconies: +200 UAH to the cost per square meter of insulation. | ||
| The prices are indicated for a volume calculation of up to 30 sq.m., if the volume is more, the discount is from 3% to 10% | ||
| Minimum order for insulation = 20 000 UAH,
including the cost of materials, this is 30 sq.m. + jambs of two windows. Unite with neighbors – get a 5% discount |
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| The cost of thermal insulation includes: materials, the ebb over insulation, replacement of window ebbs. Finish works – painting. | ||
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Thermal insulation of foam plastic thickness of 50 mm, including the cost of materials, Warranty – 5 years |
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| Name | Measure | Price |
| Thermal insulation of facades “Standart” 50mm | sq.m. | 600 UAH |
| Thermal insulation of facades “Standart” 50mm – materials of Ukrainian manufacture “Stolit” | sq.m. | 650 UAH |
| Thermal insulation of facades “Optimus” 50 mm – “RedBag” mixtures | sq.m. | 700 UAH |
| Thermal insulation of facades “Premium” 50 mm – materials of the Swiss brand “Baumit” | sq.m. | 750 UAH |
| Thermal insulation of facades “Maximum” 50 mm – all of materials from “Ceresit”, except for a heater | sq.m. | 800 UAH |
| thickness of 100 mm | ||
| Thermal insulation of facades “Econom” 100 mm | sq.m. | 675 UAH |
| Thermal insulation of balconies and loggias “Econom” 100 mm | sq.m. | 875 UAH |
| Thermal insulation of facades “Standart” 100 mm | sq.m. | 700 UAH |
| Thermal insulation of balconies and loggias “Standart” 100 mm | sq.m. | 900 UAH |
| Thermal insulation of facades “Optimus Prime” 100 mm | sq.m. | 750 UAH |
| Thermal insulation of balconies and loggias “Optimus Prime” 100 mm | sq.m. | 950 UAH |
| Thermal insulation of facades “Premium” 100 mm | sq.m. | 800 UAH |
| Thermal insulation of balconies and loggias “Premium” 100 mm | sq.m. | 1000 UAH |
| Thermal insulation of facades “Maximum” 100 mm | sq.m. | 900 UAH |
| Thermal insulation of balconies and loggias “Maximum” 100 mm | sq.m. | 1100 UAH |
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Thermal insulation of stone wool thickness 50 mm, including the cost of materials, Warranty – 5 years |
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| Thermal insulation of stone wool “Standart” 50 mm | sq.m. | 800 UAH |
| Thermal insulation of stone wool “Premium” 50 mm | sq.m. | 950 UAH |
| Thermal insulation of stone wool “Maximum” 50 mm | sq.m. | 1150 UAH |
| thickness of 100 мм | ||
| Thermal insulation of stone wool “Standart” 100 mm | sq.m. | 1000 UAH |
| Thermal insulation of balconies and loggias with stone wool “Standart” 100 mm | sq.m. | 1200 UAH |
| Thermal insulation of stone wool “Premium” 100 mm | sq.m. | 1200 UAH |
| Thermal insulation of balconies and loggias with stone wool “Premium” 100 mm | sq.m. | 1400 UAH |
| Thermal insulation of stone wool “Maximum” 100 mm | sq.m. | 1300 UAH |
| Thermal insulation of balconies and loggias with stone wool “Maximum” 100 mm | sq.m. | 1500 UAH |
| Thermal insulation with extruded polystyrene foam | ||
| Thermal insulation with extruded polystyrene foam “PENOBOARD” 50 mm | sq.m. | 700 UAH |
You can find out more about the insulation service and prices on the page Thermal insulation of apartments, houses, offices
