Long Tab Banded - High-R Insulation System Test Results
Technical Bulletin No. 17
The Long Tab Banded installation method is also referred to as a "Filled Cavity System" (FC) in ASHRAE literature.
Thermal testing of the Long Tab with Banding / Filled Cavity System was conducted in October 2010 and January 2011 at the Butler Manufacturing Research Center located in Grandview, MO, an independent certified laboratory. Finite Element Modeling was conducted by Engrana LLC, June 18, 2014.
Testing was conducted in accordance with ASTM C1363, "Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus."
The results for the two assemblies tested were as follows:
- Faced R19 fiberglass and R11 unfaced fiberglass: U-Value of 0.037
- Faced R25 fiberglass and R11 unfaced fiberglass: U-Value of 0.035
- Faced R25 fiberglass and R19 unfaced fiberglass: U-Value of 0.029
Test reports can be downloaded at the following links:
- Faced R19 F/G & R11 unfaced F/G: TestReport2010-49.pdf
- Faced R25 F/G & R11 unfaced F/G: LTBRoofFEM.pdf
- Faced R25 F/G & R19 unfaced F/G: TestReport2011-06.pdf
Benefits of Long Tab Banded / Filled Cavity System:
- High- R / Low U-Values which meet most new energy standards
- Non proprietary installation system
- Attractive installed appearance
- Easy installation of electrical, HVAC and sprinkler systems
- Economical
Summary of the two tests
| Property | Long Tab Banded/Filled Cavity System R-19/R11 | Long Tab Banded/Filled Cavity System R-25//R11 | Long Tab Banded/Filled Cavity System R-25/R19 |
|---|---|---|---|
| Thermal Transmittance, U: | 0.209 W/m2 K (0.037 Btu/ hr ft2 F) |
0.200 W/m2 K (0.035 Btu/ hr ft2 F) |
0.166 W/m2 K (0.029 Btu/ hr ft2 F) |
| Overall Thermal Resistance, Ru: | 4.8 m2 K/W (27.2 hr ft2 F/Btu) |
5.0 m2 K/W (28.4 hr ft2 F/Btu) |
6.0 m2 K/W (34.1 hr ft2 F/Btu) |
| Upper Fiberglass | Nominal R-11 unfaced NAIMA 202-96 fiberglass blanket insulation Measured thermal resistance: 11.83 hr ft2 °F/Btu |
Nominal R-11 unfaced NAIMA 202-96 fiberglass blanket insulation Nominal thermal resistance: 11.00 hr ft2 °F/Btu |
Nominal R-19 unfaced NAIMA 202-96 fiberglass blanket insulation Measured thermal resistance: 22.68 hr ft2 °F/Btu |
| Lower Fiberglass | Nominal R-19 faced NAIMA 202-96 fiberglass blanket insulation Measured thermal resistance: 20.69 hr ft2 °F/Btu WMP-VR-R Plus facing |
Nominal R-25 faced NAIMA 202-96 fiberglass blanket insulation Nominal thermal resistance: 25.00 hr ft2 °F/Btu Lamtec facing |
Nominal R-25 faced NAIMA 202-96 fiberglass blanket insulation Measured thermal resistance: 24.04 hr ft2 °F/Btu WMP-VR-R facing |