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Fastening/securing in non-frame structures

Composite thermal insulation systems in new buildings are mostly bonded with mortar (in some cases polymer-modified). Additional mechanical fastening may be necessary. Where walls are thermally renovated, additional fastening with dowels is the rule. In exceptional cases, if testing the adhesive tensile strength establishes that the existing substrate is functional, it may turn out that its load-bearing capacity is sufficient, in which case additional dowelling can be omitted.