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Seminar Outline
Condensation Conundrums – Where to put your insulation, vapour barriers and breather membranes.
Building envelope design is no longer just about keeping out the rain and wind. We are now faced with the challenge of balancing the need to keep out or keep in, and let in or let out cool and warm air, daylight, fresh air, contaminated air, sound, fire and moisture as appropriate for all seasons and all times of the day.
The drive for energy efficient buildings with improved air tightness and insulation has changed the dynamics of the building envelope as insulation, whilst keeping some surfaces warm, also keeps other surfaces cold. Sealing up the building can also prevent the safe passage of water vapour, resulting in potentially damaging condensation on these cold surfaces.
Long perceived to be immune from such problems, ‘the lucky county’ has seen an increase in the occurrence and severity of condensation problems across disparate climate zones as standard designs start to fail. The ABCB and the AIA in recognition of this, recently published a Condensation Handbook to inform the industry about these risks and to promote best practice.
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