How To Insulate A Exterior Wall. Retrofit wall insulation is a debatable subject because there is no single right answer for all homes and homeowners. The rigid insulation is an air/moisture barrier, and you should tape the seams to make it a comprehensive seal.
External solid wall insulation is one way of insulating your home.
A shear wall is an interior wall that is lined one side with plywood, from exterior wall to exterior wall. Fear not, because those walls can stay just how they are and don't need to be all but demolished to make your home more comfortable. Firstly, if the property has existing render, a render test must be. Retrofit wall insulation is a debatable subject because there is no single right answer for all homes and homeowners.