Green thinking and DIY store Praxis appear to be opposites, but not if your clients are Jan and Claudia van Pul. These franchisees succeeded in combining a green heart with being in the black. Adiabatic cooling, PlatoWood facades, a moss- and sedum-grown roof and FSC-certified wood. All of these on a budget acceptable for retail trade. This shows that even for very normal building assignments a green and sustainable course can be set.