Larsen truss / Guides

Passive House wall system ; Larsen Trusses & dense-packed cellulose insulation
Wall assemblies - new construction

Larsen truss wall systems with double-stud construction & extra insulation for new homes & energy efficient home renovation

...Larsen Truss wall design: This wall system was developed in 1981 by a builder in Edmonton, Alberta named John Larsen (hence the name), and while the original wall was 8 ¼” thick, they can be made as thick as you like. Larsen trusses use a variety of insulation types, including batt insulation (Rockwool or fiberglass)...

How to Insulate Exterior Walls from the Outside US Canada Ecohome
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 ...

Naugler House: the most energy efficient Passive House design in New Brunswick
Efficient home design

New Brunswick's most energy efficient home is Passive House designed

...Larsen truss wall system clad with 1x8 board sheathing and filled with dense pack cellulose insulation , designed by Southern Exposure, provides a thermal bridge-free building envelope that is fast to assemble with minimal work on staging. It keeps the insulation in the same plane as the foundation insulation. Interi...

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

...Larsen Truss design - see here to read more and see the video. However, with greater insulation comes greater risk of condensation because of the longer constant temperatures and the greater temperature differential between inside and out. In this situation, it is recommended to use a semi-permeable retarder on the i...

Renovate, Remodel or Rebuild? How to choose which is Best for Homes
Wall assemblies - renovation

Should I be renovating my home or tearing it down & rebuilding?

...Larsen truss wall system . If you like the shape of the house and the supporting walls are in relatively good condition, retrofitting, renovating and insulating house walls from the outside is a great option to choose. You will save demolition costs, and save the material and labour costs of framing a new structure. ...