Walls and Roofs
The easiest way to insulate walls from the exterior in older homes
...Larsen trusses with cellulose or batt insulation
A Larsen truss wall is one with engineered I-joists attached to the outside of a stud or brick wall, which then creates a cavity that can be filled with additional insulation . You can add batt insulation, dense pack cellulose, rigid insulation panels or spray foam if ...