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Lambda-value & detail library
Design λ & μ values · 36 materials
Design thermal conductivity (λ) and vapour-resistance (μ) for the materials that turn up in most build-ups, in one place. Search it, then drop the figures straight into the U-value or condensation tools.
Materialλ · W/mKμUse it in
No materials match that search.
Design values for guidance. Always use the certified declared value from the product’s datasheet (BBA, ETA or equivalent) for a real specification, λ rises with moisture and ageing.
Beyond the data
Need the certified junction details?
We hold a library of certified, thermally-modelled junction details from real Mosart projects, wall-to-floor, eaves, openings, balconies. Tell us what you’re detailing and we’ll share what fits.
Done. We will be in touch.