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# Building Elements - Heat Loss vs. Thermal Resistivity

Thermal resistance in some common building elements are indicated in the table below. The values can be used to approximately heat loss calculations from buildings.

Thermal Resistance - Inside and Outside Walls
Thermal Resistance Inside and Outside WallsResistance (m2K/W)
Ri = 1/fi 1) Ro = 1/fo 1) Ri+ Ro
Building parts against the surrounding environment 0.13 0.04 0.17
Building parts others 0.13 0.13 0.26

Building Elements - Thermal Resistance against Earth
Thermal Resistance for Building Elements against EarthResistance (m2K/W)
Re
Floors 0.5 m above to 0.5 below earth bound, 0-1 m from inside outside wall - without cold bridge protection 0.2
Floors 0.5 m above to 0.5 below earth bound - with cold bridge protection 1.0
Center-field above 1 m from inside outside wall 1.5
Basement floors 0.5 m below earth bound 2.0
Basement walls under earth bound, the whole wall against the earth, where h is the basement floors level below the earth bound (m) 0.2 + 0.3 h
Basement walls under earth bound, basement floor against the earth and partly against air 2.0
• 1 K/W = 0.5275 (h oF)/Btu

## Related Topics

### • Heating Systems

Design of heating systems - capacities and design of boilers, pipelines, heat exchangers, expansion systems and more.

### • Insulation

Calculate heat transfer and heat loss from buildings and technical applications. Heat transfer coefficients and insulation methods available for reduction of energy consumption.

## Related Documents

### Heat Loss from Buildings

Overall heat transfer loss from buildings - transmission, ventilation and infiltration.

### Hot Water Heating System - Design Procedure

Hot water heating system design procedure with heat loss, boiler rating, heater units and more.

### Infiltration - Heat Losses from Buildings

Estimated infiltration heat losses from buildings.

### Transmission Heat Loss through Building Elements

Heat loss through common building elements due to transmission, R-values and U-values - imperial and SI units.

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