How big are the holes?

SMALL – The team at Insulmax® has developed proprietary installation machines so that we can deliver an install process with the smallest hole size of any injected dry fibre wall insulation product. We use a 16 mm (10c coin size) in timber clad/plasterboard cladding and 16 mm diameter holes (10c coin size) in brick / masonry cladding. The hole in the brick cladding is small enough to be made in the mortar joint between three bricks.