Attic Truss With Raised Heel

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Attic truss with raised heel.

This is the least expensive form of insulation for the attic floor. Raised heel trusses are installed the same as conventional trusses. Raised heel trusses 9 1 4 to 15 1 4 inches in depth. It is raised higher with a heel that extends up from the top of the wall and elevates the truss at the building s edges.

How raised heel trusses save you money. Raising the truss higher has two big advantages. Getting your home build under a roof earlier can prevent moisture damage. Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification.

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 between those spaces. Standard heel typical truss heel height is about 4. Builders don t need special tools or know how to build with them. When insulation is compressed its r value is reduced.

A raised heel truss is identical to a conventional truss except for one difference. It greatly simplifies attic ventilation and it leaves ample room for insulation above exterior wall top plates. Raised heel trusses can allow you to install full depth uncompressed fiberglass batt insulation from wall to wall in your pole barn s attic floor. Easy to build with.

With a raised heel truss you have enough space to utilize cheaper insulation methods such as blown cellulose. The raised heel provides additional space for cheaper attic insulation and for the full depth of insulation to be extended right to the outside of the top plate. Also the raised heel trusses are assumed to have a heel height of between 9 inches to 15 inches. Raised heel trusses can be installed in a single day.

With raised heel trusses it may be possible to put hvac ductwork in the attic without the system losing too much heat. Click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to the compare list. The extra height of a raised heel truss roof provides additional space for uncompressed attic insulation and the full depth of insulation to be extended right to the outside of the top plate. Though extra material is used to create the trusses raised design the extra cost can be offset by the need for less insulation without compromising energy efficiency.

More importantly the raised heel provides the opportunity to increase energy efficiency to meet new energy code requirements. Ventilation eave baffles if needed for air flow. Truss heel height the vertical depth of the truss at the outside face of the bearing.