Insulation Calculation Tool
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The table presents different output options and mean values (in bold) for various parameters. Further it gives minimum and maximum values (small font size). Average values, minimum and maximum are based on a number of simulations (indicated at right) made to handle the variation in material properties and climate.
If no results are shown, based on your input (location, wall type etc.), the web tool at present does not contain any simulations with the chosen combination. To get results you can broaden your search, e.g. by selecting a town instead of a specific address, by choosing a wider interval of orientation or wall thickness or by choosing another combination of internal and external plaster
(7 aggregations out of 1015) show introduction
Reference - no insulation
This is an average of 1 simulations across 1 weather stations.
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Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 1.94 1.94 – 1.94
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Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 0 – 0
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Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 1 – 1
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Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 76736 76736 – 76736
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Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 15.4 15.4 – 15.4
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110 mm Phenolic Foam λ=0.02 W/(mK)
This is an average of 5 simulations across 1 weather stations.
-
Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 0.24 ref. 1.94 0.24 – 0.24
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Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 ref. 0 0 – 0
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Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 ref. 0.99 1 – 1
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Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 10762 ref. 76736 10755 – 10779
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Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 19.4 ref. 15.4 19.4 – 19.4
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90 mm Phenolic Foam λ=0.02 W/(mK)
This is an average of 5 simulations across 1 weather stations.
-
Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 0.28 ref. 1.94 0.28 – 0.28
-
Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 ref. 0 0 – 0
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Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 ref. 0.99 1 – 1
-
Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 12549 ref. 76736 12542 – 12566
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Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 19.3 ref. 15.4 19.3 – 19.3
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- Fugiat ipsum ipsum deserunt culpa aute sint do nostrud anim incididunt cillum culpa consequat. Excepteur qui ipsum aliquip consequat sint. Sit id mollit nulla mollit nostrud in ea officia proident. Irure nostrud pariatur mollit ad adipisicing reprehenderit deserunt qui eu.
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80 mm Phenolic Foam λ=0.02 W/(mK)
This is an average of 5 simulations across 1 weather stations.
-
Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 0.31 ref. 1.94 0.3 – 0.31
-
Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 ref. 0 0 – 0
-
Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 ref. 0.99 1 – 1
-
Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 13707 ref. 76736 13700 – 13724
-
Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 19.2 ref. 15.4 19.2 – 19.2
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- Fugiat ipsum ipsum deserunt culpa aute sint do nostrud anim incididunt cillum culpa consequat. Excepteur qui ipsum aliquip consequat sint. Sit id mollit nulla mollit nostrud in ea officia proident. Irure nostrud pariatur mollit ad adipisicing reprehenderit deserunt qui eu.
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65 mm Phenolic Foam λ=0.02 W/(mK)
This is an average of 5 simulations across 1 weather stations.
-
Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 0.36 ref. 1.94 0.36 – 0.36
-
Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 ref. 0 0 – 0
-
Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 ref. 0.99 1 – 1
-
Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 15964 ref. 76736 15955 – 15984
-
Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 19 ref. 15.4 19 – 19
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- Fugiat ipsum ipsum deserunt culpa aute sint do nostrud anim incididunt cillum culpa consequat. Excepteur qui ipsum aliquip consequat sint. Sit id mollit nulla mollit nostrud in ea officia proident. Irure nostrud pariatur mollit ad adipisicing reprehenderit deserunt qui eu.
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45 mm Phenolic Foam λ=0.02 W/(mK)
This is an average of 5 simulations across 1 weather stations.
-
Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 0.46 ref. 1.94 0.46 – 0.46
-
Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 ref. 0 0 – 0
-
Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 ref. 0.99 1 – 1
-
Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 20676 ref. 76736 20662 – 20702
-
Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 18.7 ref. 15.4 18.7 – 18.7
- About
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20 mm Phenolic Foam λ=0.02 W/(mK)
This is an average of 5 simulations across 1 weather stations.
-
Sim. U-Value (W/m2K)
?U-value (W/(m2K))Requirement for the simulated thermal resistance (W/(m2K)) or simulated U-value of the wall is usually specified in building regulations and based on climatic zones. A low U-value corresponds to a low heat loss. Note, the U-values is simulated parallel with the hygrothermal simulations.
- 0.75 ref. 1.94 0.75 – 0.76
-
Mould (Index)
?Mould (index)A number on a scale from 0 (no mould) to 6 (extensive mould growth) indicating the risk for mould growth between the existing wall and the internal insulation. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, material properties and the characteristics of mould fungi present, using the VTT model Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 0 ref. 0 0 – 0
-
Algae (Index)
?Algae (index)A number on a scale from 0 (no algae) to 1 (full coverage) indicating the share of the exterior surface covered by algae. This is based on a complex interaction between environmental factors (relative humidity and temperature) and duration, and surface properties (porosity, roughness), based on Avrami’s law improved into a modified model. Colour coding using green (low index), yellow (medium) and red (high) classifies the different solutions presented. The number given is the maximum value within a five-year simulation period.
- 1 ref. 0.99 1 – 1
-
Heat loss (W/m2/year)
?Heat loss (W/m2/year)Heat loss through the external wall per m2 per year after being insulated. The lower the number, the higher the reduction compared to the situation before applying internal insulation. Heat loss is expressed for a homogenous part of the wall with no thermal bridges etc. Heat loss depends on the outdoor climate, i.e. a location in a cold climate corresponds to a high heat loss compared to a location in a warmer climate.
- 33635 ref. 76736 33601 – 33679
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Min. surface temperature (°C)
?Min. surface temperature (°C)Minimum temperature (°C) of the interior surface of the walls achieved within a five-year simulation period. The lower the temperature, the higher the risk of mould growth or condensation. The critical surface temperature depends on the location of the building and the indoor climate. The simulations are based on indoor climate EN 15026 class A and B. In both cases indoor temperature goes from 20 C at 10 C outdoor to 25 C at 20 C outdoor. No change below 10 C outdoor or above 20 C outdoor. Class A: Relative humidity goes from 35 % at -10 C outdoor to 65 % at 20 C outdoor. Class B: From 40 % to 70 %. No change below -10 C and above 20 C.
- 17.9 ref. 15.4 17.9 – 17.9
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This project has received funding from the European Union’s
Horizon 2020 research and innovation programme under
grant agreement No 637268