There are a few companies making pre-fabs out of structural insulated panels (SIPs) that can have a high R-value for Northern climates.
They can even withstand earthquakes with a better survival rate than frame and stick.
There are a few companies making pre-fabs out of structural insulated panels (SIPs) that can have a high R-value for Northern climates.
They can even withstand earthquakes with a better survival rate than frame and stick.