I found Insulmax® while researching on online how to improve heat retention of our older house. Insulmax® is an awesome product which we experienced significant benefits straight away with reduced condensation and a warmer house which required the heatpump much less frequently. The process was super easy and installation was quick, a great option without having to pull down existing Gib and suited our application as we were repainting internally anway. Highly reccommend for a cost effective upgrade.