Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 35·6.29
Ventilation behind timber-supported cladding
Where cladding is supported by timber or applied to timber framed buildings, a ventilated space must be provided between the cladding and building to allow rapid drying of penetrating water.
Where cladding is supported by timber components or is on the façade of a timber framed building, the space between the cladding and the building should be ventilated to ensure rapid drying of any water that penetrates the cladding.
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