I need to insulate a 100mm gap between a breeze block wall & wood cladding.
I was thinking about taking some boards at the top off and pouring in loose fill insulation. Would this be effective? I’m not sure whether this would create enough density as it should be pressure blown in.
Alternatively I’m tempted to remove the entire cladding, pin up new 150mm vertical battens on top of the existing 100mm battens & insert 250mm compressed foam foil back board and replace the cladding. Is this the best approach or am I missing a trick?