Practice shows that heat losses through the roof structure up to 40% of the total heat loss of the house. Therefore, it is important to properly insulate the ceiling, especially if the attic is cold and there are no plans to warm the room occupancy. To accurately calculate the necessary amount of thickness and insulation offer the convenient online calculator.
A calculator for calculating the desired thickness of insulation in the building from a cold attic
The methodology of the calculation
All calculations are based on two basic things: the location of the construction area and the type of insulation material. From the first value depends on the desired heat transfer coefficient of resistance (determined on a special map diagram), from the second - the thermal conductivity coefficient.
R = s / λwhere
R- the required resistance to heat transfer, m² · K / W;
s - thickness of insulation, m;
λ — the thermal conductivity of material W / (m · K).
This formula and laid the basis for the calculation algorithm calculator. To carry out the most accurate calculation should:
- select the heating material from the list provided;
- determined by the map-scheme of the thermal resistance for the floors in their region;
- select overlapping material (it also depends on the outcome);
- specify the thickness of the slab;
- if the ceiling will sheathe finishing materials, specify their type and thickness;
- if the attic is supposed flooring on the floors, then the accuracy of the calculation should also indicate the type and thickness.
For convenience, the final result will be presented in mm. But there is little to accurately calculate the required thickness. It should also be familiar with the rules of competent production work and possible problems.
Related article:
The causes of thermal bridges in the mansard roof. Why are there cold bridges and how to prevent the cause. How to insulate an attic.
