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Technical Bulletin #17:     

 (PDF VERSION)                                                                                                               

Long Tab with Banding - High-R Insulation System Test Results

 

The Long Tab with Banding installation method is also referred to as a       

“Filled Cavity System” (FC) in ASHRAE literature.

 

A graphic of the installation is to the right.                  

 

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.

 

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 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 - http://www.lamtec.com/cdocs/ButlerTestReport2010-49.pdf

            Faced R25 F/G & R19 unfaced F/G - http://www.lamtec.com/cdocs/ButlerTestReport2011-06.pdf

 

The benefits of Long Tab with Banding / Filled Cavity System are:

  • 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

A summary of the two tests follows:

 

Property

 Long Tab Banded/Filled Cavity
System
R-19/R11

   Long Tab Banded/Filled Cavity
System
R-25/R19

Thermal Transmittance, U:

0.209 W/m2 K

0.166 W/m2 K

(0.037 Btu/ hr ft2 F)

(0.029 Btu/ hr ft2 F)

Overall Thermal Resistance, Ru:

4.8 m2 K/W

6.0 m2 K/W

(27.2 hr ft2 F/Btu)

(34.1 hr ft2 F/Btu)

Upper Fiberglass 

Nominal R-11 unfaced NAIMA 202-96 fiberglass blanket insulation

Nominal R-19 unfaced NAIMA 202-96 fiberglass blanket insulation

Measured thermal resistance: 11.83 hr ft2 ºF/Btu

Measured thermal resistance: 22.68 hr ft2 ºF/Btu

Lower Fiberglass

Nominal R-19 faced NAIMA 202-96 fiberglass blanket insulation

Nominal R-25 faced NAIMA 202-96 fiberglass blanket insulation

Measured thermal resistance: 20.69 hr ft2 ºF/Btu

Measured thermal resistance: 24.04 hr ft2 ºF/Btu

WMP-VR-R Plus facing

WMP-VR-R Plus facing

 

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