BUILDING SYSTEM WITH MULTI-FUNCTION INSULATION BARRIER

The invention relates to a building section including a sub-structure and a cladding member connected in fixed relation relative to the sub-structure. A multi-function elongate, flexible insulating element is disposed between the sub-structure and the cladding member for damping energy transfer between the cladding member and the sub-structure, facilitating alignment of the cladding, and creating a rainscreen configured to drive out moisture from the wall cavities. In some implementations, the insulating element has at least one insulating layer which is substantially incompressible and which has a substantially constant density in the range of 200 kg/m3 to 300 kg/m3. In certain preferred implementations, the insulating element can be formed of a foam material such as foam tape or thermal break tape.