Calculation method for
assessing
Thermal Bridging at the edges of openings
Example
The diagram below shows a window jamb in a masonry cavity wall, with Therma-Close closing
the cavity.
Robust details require a cavity closer with a minimum Thermal Resistance
of 0.45m²K/W
Calculation of
Thermal Resistance Path (R value)
This table shows the thermal resistance for each segment of the path ABCD.
The thermal resistance for each segment is obtained by dividing the length
of the path segment in metres by its thermal conductivity in W/mK
