The insulation and air sealing implemented in our Passive projects keep the interiors at comfortable temperatures all year round, even through blistering heat waves and frigid snow storms, with very little help from mechanical systems. Part of this is due to the insulation and air sealing that is used around the perimeter of the building. We recently published an article on the Passive House Accelerator website that explains the evolution of our approach to the perimeter walls of our passive projects. We include how our details have changed, tips that builders have shared through their experiences, and products that have streamlined the whole process. Stay tuned as we roll out additional articles!