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Title: Investigating Solutions to Wind Washing Issues in Two-Story Florida Homes, Phase 2

This report provides results from a second-phase research study of a phenomenon generally referred to as wind washing. Wind washing is the movement of unconditioned air around or through building thermal barriers in such a way as to diminish or nullify the intended thermal performance. In some cases, thermal and air barriers are installed very poorly or not at all, and air can readily move from unconditioned attic spaces into quasi-conditioned interstitial spaces. This study focused on the impact of poorly sealed and insulated floor cavities adjacent to attic spaces in Florida homes. In these cases, unconditioned attic air can be transferred into floor cavities through pathways driven by natural factors such as wind, or by thermal differences between the floor cavity and the attic. Air can also be driven into a floor cavity through mechanical forces imposed by return duct leakage in the floor cavity.
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  1. Building America Partnership for Improved Residential Construction, Cocoa, FL (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
Building America Partnership for Improved Residential Construction, Cocoa, FL (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B)
Country of Publication:
United States
residential; Residential Buildings; BA-PIRC; Building America; wind washing; floor cavity; attic space; thermal barrier; air barrier; uncontrolled infiltration; duct tightness; pressure testing; Retrofit; existing homes; cooling impacts; heating impacts; multi-story