Attic Truss With Raised Heel

Energy trusses have raised heels so they can reach r values of 30 or higher.

Attic truss with raised heel.

A raised heel truss is identical to a conventional truss except for one difference. Raised heel trusses do not compress the attic insulation over the top plate which compromises the insulation value. When a raised heel truss roof is combined with an efficient building envelope and a well ventilated attic it reduces the pressure and temperature differences between the home and the attic space. Add to list click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to your list.

The apa the engineered wood association has released a new construction guide raised heel trusses for efficient cost effective comfortable homes form r330. The eight page guide offers detailed illustrations and installation instructions and describes how a raised heel truss construction system can increase the structural and energy performance of a home and save on costs. Raising the truss higher has two big advantages. Compare click to add item 24 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. 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. This also makes the attic a better option for hvac ducting as it. 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.

When builders use these trusses the energy code allows for use of less insulation for the entire ceiling system. This in turn cuts heat transfer and improves the efficiency of the hvac system. Click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to the compare list. The heel of a conventional plated roof truss where the bottom chord intersects with and bears on the perimeter wall plate and is fitted with a vertical member that literally raises the top chord of the truss.