Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

# Building Elements - Heat Loss vs. Thermal Resistivity

## Thermal resistance in building elements like walls, floors and roofs above and below the ground.

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.

## Search

Search is the most efficient way to navigate the Engineering ToolBox.

## Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .

## Citation

• The Engineering ToolBox (2003). Building Elements - Heat Loss vs. Thermal Resistivity. [online] Available at: https://www.engineeringtoolbox.com/heat-loss-buildings-d_194.html [Accessed Day Month Year].

Modify the access date according your visit.

4.10.13

.