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2. Wall with internal thermal insulation without vapour barrier
The technical notices for these product families clearly stipulate that when these systems are to be installed on perimeter walls in contact with the outside atmosphere, they must include a vapour barrier.
The consequences can be assessed if, through ignorance and/or as an "economic ... measure", these ITI thermal insulation systems were installed without a vapour barrier!
2.1 Concrete wall with ITI (EPS) without vapour barrier in winter
Table 4 shows the calculation note required to plot the Glaser diagram for the clad wall under the selected winter hygrothermal conditions (see § 1.2.2 of
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Wall with internal thermal insulation without vapour barrier
Walls with external thermal insulation (thick rendering on polystyrene)
