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THERMAL STUDY PROVES AN ICF WALL CAN ACHIEVE UP TO 60% ENERGY SAVINGS AND 58% GREATER R-VALUE/RSI FOR HOME AND BUILDING OWN

Mar 28, 2017

The Insulating Concrete Forms Manufacturers Association (ICFMA) recently commissioned CLEB Laboratories (formerly known as Air-Ins Inc.) to conduct the first in a series of accredited whole wall thermal studies. This installment compared a 2” x 6” traditional insulated wood frame cavity wall to a standard 6 inch (150mm) core insulating concrete form (ICF) wall. The study was overwhelmingly revealing; confirming dramatically superior energy-efficiency performance and an overall better R-Value/RSI demonstrated by the ICF Wall assembly.

For decades, the ICF Industry has been asked to provide definitive proof that thermal mass, the air-tightness and continuous insulation features of ICF walls deliver real, quantifiable benefits in terms of overall energy-savings and achieved R-Values/RSI. Many studies have been conducted in the past by the Portland Cement Association (PCA), the Canada Mortgage and Housing  Corporation (CMHC) and the Department of Housing and Urban Development (HUD) all of which were either based on limited field comparisons or thermographic computer modelling. This is the first time a SCC & IAC Accredited, and Internationally recognized testing facility has been commissioned to evaluate a realistic side-by-side comparison of the two types of wall assemblies within a single study.

The test results confirm the following:
  • The tested ICF wall assembly provided 58% better effective R-Value/RSI than the tested 2” x 6” wall assembly*
  • The tested ICF wall assembly generated up to 60% energy savings compared to the tested 2” x 6” wall assembly*
  • The measurable contributions of the ICF wall assembly’s thermal mass and the interior and exterior layers of continuous insulation

What does this mean for consumers? Consider two typical homes, each with 2,000 square feet of wall area – one constructed in wood frame to permitted code*, the other constructed using ICF technology and subjecting both to the same test condition. When incorporating the average kWH value for all North America, this study indicates that in many climate zones that during the most extreme cold conditions an ICF wall can save between $140 and $190 per month in equivalent electrical consumption when compared to a traditionally constructed wood frame wall.

For more information, or to read the full report, visit the icf-ma.org/thermalstudy
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