Recently had a installer fit these on a small project at home, we are currently looking at cladding the outside of our bungalow, all the way round, found these guys quite helpful, and they even sent me some free samples, https://www.slipsfromstock.com/ , the installer we are looking to use wants to use their own branded brick slip adhesive, but is unsure if it will work with the insulation panels e are also having fitted. Has anyone had any experience of this situation, and if so what would be their recommendation for adhesive, or is their any adhesives to stay away from in particular?