Free tool · live 2D thermal simulation

Junction Thermal-Bridge Lab

A real steady-state 2D heat-flow solver, running in your browser. Watch the isotherms bend around a floor-slab junction, and read off the linear thermal transmittance ψ and the surface-temperature factor f_Rsi — the numbers a datasheet never gives you, and the clearest proof of why continuous external insulation wins.

Insulation position

Insulation thickness — 80 mm (EPS)

Wall structure

View

0°C

20°C

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ψ · linear transmittance (W/m·K)

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f_Rsi · surface-temp factor

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U_wall · 1-D (W/m²·K)

A demonstration solver, not a certified ISO 10211 assessment. This is a genuine 2-D finite-difference steady-state conduction solve on a simplified intermediate-floor junction with representative material properties and surface resistances (R_si=0.13, R_se=0.04). It is validated in-tool against the 1-D wall (see the check, left) and is intended to show the behaviour and relative magnitude of the thermal bridge. For a compliance-grade ψ-value, Technopol runs the full detail on its calibrated FEM — ask us.

Technopol SA (Pty) Ltd · info@technopol.co.za · +27 11 363 2780