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Diffusion resistance for a layered vapor barrier
Beregn den samlede diffusionsmodstand Sd af din dampspærre-opbygning ud fra hvert lags µ (diffusionsmodstandsfaktor) og tykkelse — begge fra produktets datablad. Sd = Σ(µ · d) er den ækvivalente lufttykkelse. Et opslagsværktøj, ikke en fugtteknisk kontrolberegning.
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