Insulating Open Web Floor Trusses

The joists allowed us to reduce the boxes and bulkhead to hide ducting to almost zero with the exception of inside a main floor closet and the main floor powder room.

Insulating open web floor trusses.

To achieve the 16 inch depth we wanted for insulation and an air space under the sheathing we used open web parallel chord trusses as the rafters. It also allowed us to create a basement ceiling with minimal bulkheads except where load bearing beams are installed. Spray foam insulation expands upon exiting the foam gun. Open web joist chase opening.

Open web wood floor trusses can be designed to support nearly any span. It must be cut to fit snug between floor joists. Plan on the thickness of the floor being roughly equal in inches to the span in feet. Open web floor truss insulation options hi bodo and welcome to the forum.

These trusses typically used as joists have diagonal bracing or struts and are made in quebec by open joist triforce. I ll have to do some searching on the paper against the bottom of the floor if you go this direction but one of the experts in the field stated that paper to the warm side of a home was not intended for basements. Gaps in open web truss or engineered floor joist systems may be difficult to address with this type of insulation. Joist bays the open spaces between floor joists are prime hosts for insulation under specific circumstances.

Of the conditioned space above. In my own home we have floor trusses which clearspan 48 feet.