Snow loads, –30 °C nights, and humid summer heatwaves test any cabin. A prefab kit that thrives in those extremes starts with a super-tight shell: thick wall assemblies, continuous insulation, and ...

When a snowstorm rolled through Southern Maine last winter, Colin Goodson’s neighbors were dark. But inside his factory-built house, the lights remained on, the air was toasty, and the kitchen buzzed ...