Thermal Bridging Material Estimator
Estimate supplementary insulation material for selected structural junctions such as slab edges, beams, columns and wall transitions without pretending to perform a thermal-bridge simulation.
Junction treatment inputs
Supplementary insulation estimate
How the thermal-bridge material estimate works
The tool models supplementary insulation as a treatment strip along a defined junction. This converts linear junction length into an area and, where thickness is supplied, into material volume.
Volume = treatment area × insulation thickness
Planning volume = volume × (1 + allowance)
Worked example
For 80 m of slab-edge treatment at 0.4 m width, the linear treatment area is 32 m². At 60 mm thickness, the basic material volume is 1.92 m³ before allowance.
Why geometry matters
A narrow continuity strip and a larger wrap around a structural element can require very different material quantities even when they occur at the same number of locations. Enter the actual treated width rather than using a generic percentage of wall area.
Why this is not a thermal-bridge calculation
Thermal bridge performance depends on junction geometry, conductivity, boundary conditions and surrounding construction. A material takeoff cannot establish the thermal bridge's actual heat flow.
Design boundary
Use junction-specific drawings and thermal analysis for design decisions. This estimator is useful after the intended treatment dimensions are known and you need a procurement quantity.
Frequently Asked Questions
Can this be used for slab edges?
Yes.
Can beams and columns be modeled?
Yes, using the required treatment dimensions.
Does it calculate ψ-values?
No.
Why include a waste allowance?
For cutting and detailing variability.