Energy heel

Energy heel

The point at which typical roof rafters connect with the top plate of the exterior wall leaves little room for the full depth of attic insulation, creating compressed insulation and reduced performance. An energy heel raises the truss at least 6 inches to allow the insulation enough room to produce its full R-value at this critical location.
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An "energy heel" truss roof (in which the trusses are built with an elevated vertical heel between the top and bottom cords to allow for ample insulation all the way to the wall perimeter) was erected and topped with warm brown standing seam metal roofing.
At the attic level, an "energy heel" raises the roof at least 12 inches above the attic floor, improving ventilation and insulation.