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      A FIELD STUDY SETUP OF FOUR HOMES HAVING NON-VENTILATED AND SEMI-CONDITIONED SEALED ATTICS

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          INTRODUCTION

          The University of Florida (UF) and the Oak Ridge National Laboratory (ORNL) are evaluating the hygrothermal (heat and moisture flow) performance and durability of sealed attic construction where open cell spray polyurethane foam (ocSPF) insulation is applied directly to the underside of the roof deck. During the 2015–2016 fiscal year and with financial support from the Florida Building Commission (FBC) and the Florida Roofing and Sheet Metal Contractors Association (FRSA), UF and the ORNL Building Technology Research Integration Center (BTRIC) completed Phase I of a study that setup four residential home demonstrations in Florida climate zones CZ-1A and CZ-2A. Field measurements for the homes are listed in Table 1.

          The four homes are instrumented for measuring temperature and relative humidity of the indoor living space, the outdoor air and the attic air. In addition, the temperature, relative humidity and moisture content of the roof sheathing are being monitored and recorded by remotely-accessible data acquisition equipment. Air leakage tests on the whole house, on the sealed attic and in the HVAC ducts were conducted on all four homes, Table 1. Digital and infrared images were captured to document the thermal performance of the sealed attics. Field tests commenced on June 1, 2016. Data acquisition will continue for one full year to document heat and moisture flows, which, in turn will be used in a second phase of work to benchmark an analytical tool kit for predicting the heat and moisture flows in Florida's hot and humid climate. The second phase of work is pending approval by the FBC.

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          Most cited references 14

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          “Thermal Environmental Conditions for Human Occupancy,”

          (2013)
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            “Literature Review of the Impact and Need for Attic Ventilation in Florida Homes.”

             D. Parker,  P. Fairey,  L GU (1993)
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              “Climate Data for Building Design Standards,”

              (2013)
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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Summer 2016
                : 11
                : 3
                : 1-20
                Author notes

                1, 2, 3, 4, 5, 6, 7, 8, 9. Oak Ridge National Laboratory (ORNL), Building Technology Research Integration Center (BTRIC)

                10. University of Florida Associate Professor (Structures)

                11, 12, 13. University of Florida Graduate Students

                Article
                jgb.11.3.1
                10.3992/jgb.11.3.1.1
                ©2016 by College Publishing. All rights reserved.
                Page count
                Pages: 20
                Product
                Categories
                INDUSTRY CORNER

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