Energy trusses have raised heels so they can reach r values of 30 or higher.
Residential names of roof trusses.
6 north light roof truss 7 quadrangular roof truss 8 parallel chord roof truss 9 raised heel roof truss 10 scissor roof truss.
This particular truss is made out of wood most of the time but it can also be built out of a combination of steel and wood.
Most common types of roof trusses gable trusses.
The raised heel roof truss reduces condensation problems since the truss creates a vapor barrier and is commonly seen in humid climates where mold is a common issue.
Most standard residential trusses can achieve r values r value referring to a rating that represents the insulation s capacity to resist heat transference from heated to non heated areas and vice versa of 11 or 13 near the sidewall.
The components of a roof truss 1 wall plate bearing 2 tye beam bottom chord 3 rafter top chord 4 webs 5 purlins battens 6 apex 7 cantilever 8 clear span 9 heel 10 joints 11 nail plate 12 overhang.
This truss requires a soffit siding and additional insulation work from the onset which elevates construction costs.