A built-in foam core gives the Tstud™ three times the insulation of a conventional wood stud.
In construction, the R-Value is the measurement of a material's capacity to resist heat flow from one side to the other. In simple terms, R-Values measure the effectiveness of insulation and the higher number, represents more effective insulation. The R-Value through a typical 2x6 wood stud is 6.88. Any wood member causes there to be a transfer of heat and cold from the exterior of a home or a building to the inside of the same space; known as conduction. The only way to stop, or minimize, the transfer of heat or cold from one side of a wall to the other side, is to purchase and install thick enough rigid insulation to the entire exterior perimeter of the structure.
The Tstud™ is the same depth as a 2x6 but offers an impressive initial R-Value of 20.2 and has a 99.23% complete thermal break through the stud. Meaning that there isn't a need for continuous rigid insulation to meet and exceed the 2015 energy code in all of the climate zones in North America.
Typically, the maximum R-Value of any continuous insulation is only 5 and is ¾” to a maximum of 1” in depth.
Regarding the 99.23% complete thermal break through the Tstud™:
The proprietary truss system that holds the 2 wood members together accounts for .77% of a thermal transfer of heat and/or cold.
The truss is non-metal and is fully encased in Type 1 foam (HFO that is 2020 EPA compliant and has a fire-retardant component). Continuous rigid insulation (Type 2) is attached with metal nails and still has up to .5% of conduction through the foam, depending on the diameter of the fastener. Most window and door manufacturers require a wood behind their products, so most of those openings are wrapped with a 1x4, so the true thermal break of continuous insulation is somewhere in the 95% range.
By using the thermally broken Tstud™ Wall Assembly, a reduction of 4-7 points on the HERs numbering system is garnered yielding the building an approximate 18% improvement (depending on heating or cooling degree days and the climate zone energy code currently in force) in energy efficiency over standard 2”x 6” wall construction. The Tstud™ will be an excellent LEED (leadership in energy and environmental design) product.
This increase in the R factor is significant as there is not another solution that acts alone to offer as aggressive of an outcome.
Therefore, with incentives to both builders and consumers being offered by way of rebates through government and utility providers, there is an opportunity to drive change to build with more energy efficient components to meet the new rigorous energy code legislations and net zero effect initiatives.
A test was performed by placing a commercial grade hot iron on one of the wood members. That wood member was heated up to 194 degrees in an effort to see how fast that temperature would conduct through the wood, through the foam, and increase the temp on the opposing wood member in order to replicate a wall comparable to one in San Antonio, Texas. After 1.5 hours, the temperature of the opposing wood member rose by only 3 degrees, which we think happened by convection and not conduction. Proving, that the Tstud™, has a significant benefit in southern cooling zones and in northern heating zones.