Green Building Bible, Fourth Edition |
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Posted By: jamesingram(this is a typical value in the UK for the vapour permeability of still air)Will the vapour permeability of still air in Scotland change in the event of a â€śyesâ€ť vote?
Posted By: Ed DaviesFirst table: â€śCalculated Mu = Vapour Resistance x 0.2". I think â€śResistanceâ€ť should be â€śResistivityâ€ť here. It's what makes sense logically, given that Âµ factors are stated for materials in general rather than particular thicknesses of layers, and how the numbers seem to be calculated.
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