Attic Truss With Raised Heel

It greatly simplifies attic ventilation and it leaves ample room for insulation.

Attic truss with raised heel.

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. 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. Compare click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to the compare list. Click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to the compare list.

Add to list click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to your list. 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. The apa the engineered wood association has released a new construction guide raised heel trusses for efficient cost effective comfortable homes form r330. 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. 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. 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. 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.

Raised heel trusses do not compress the attic insulation over the top plate which compromises the insulation value. The cost of additional insulation is very little and depending on your climate zone and the local energy code you may require less insulation if your. This also makes the attic a better option for hvac ducting as it. A raised heel truss is identical to a conventional truss except for one difference.