Roof Energey Heel

Raised heel trusses do not compress the attic insulation over the top plate which compromises the insulation value.

Roof energey heel. Combined with a properly designed attic ventilation system and some well placed air sealing a roof framed with raised heel aka high heel or energy trusses reduces the temperature and pressure differences between the conditioned living space below and the unconditioned attic area thereby reducing thermal transfer or heat loss. An energy heel has a taller heel height which allows for the adequate amount of insulation to reach the outside wall and eliminate the cold spot. Related videos roof framing. A more comfortable interior.

Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification. Average energy savings of a raised heel truss home compared to a home with standard roof trusses insulated in accordance with table r402 1 2 and section r402 2 1 of the 2015 iecc. This is created by designing the truss with a. To create an energy heel in the build roof dialog check trusses no birdsmouth uncheck automatic birdsmouth cut specify the desired energy heel height as a positive raise off plate value automatically generate or manually draw the roof planes then draw and position the first truss.

Truss heel height the vertical depth of the truss at the outside face of the bearing. 1 tpi 1 2014 2 2015 irc section r202. Energy savings based on an analysis of homes located in climate zones 2 8. Design a raised heel.

To create a truss with an energy heel a vertical member is added over the supporting wall and the bottom chord stops there rather than extending into the overhang. More importantly the raised heel provides the opportunity to increase energy efficiency to meet new energy code requirements. The option 1 figure to the right shows a raised energy heel. Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification.

Standard heel typical truss heel height is about 4. Because raised heel trusses are high enough to leave the insulation value intact the energy code allows for use of less insulation for the entire ceiling system when raised heel trusses are used. Truss heel height the vertical depth of the truss at the outside face of the bearing. Standard heel typical truss heel height is about 4.