Cladding Attachment Over Thick Exterior Insulating Sheathing (Fact Sheet)

关键词: CLADDING ATTACHMENT;    EXTERIOR INSULATION;    INSULATING SHEATHING;    FURRING STRIPS;    THERMAL RESISTANCE;    DISCRETE LOAD COMPONENT TESTING;    LONG TERM MOVEMENT;    CREEP;    RESIDENTIAL;    RESIDENTIAL BUILDINGS;    BSC;    BUILDING AMERICA;   

DOI  :  10.2172/1114058
RP-ID  :  DOE/GO-102013-4057
PID  :  OSTI ID: 1114058
Others  :  Other: KNDJ-0-40337-00

学科分类：能源（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The addition of insulation to the exterior of buildings is an effective means of increasing the thermal resistance of wood-framed walls and mass masonry wall assemblies. The location of the insulation on the exterior of the structure has many direct benefits, including better effective R-value from reduced thermal bridging, better condensation resistance, reduced thermal stress on the structure, as well as other commonly associated improvements such as increased airtightness and improved water management. For thick layers of exterior insulation (more than 1.5 in.), the use of wood furring strips attached through the insulation back to the structure has been used by many contractors and designers as a means to provide a convenient cladding attachment location. Although the approach has proven effective, there is significant resistance to its widespread implementation due to a lack of research and understanding of the mechanisms involved in the development of the vertical displacement resistance capacity. In addition, the long-term in-service performance of the system has been questioned due to potential creep effects of the assembly under the sustained dead load of the cladding and effects of varying environmental conditions. In addition, the current International Building Code (IBC) and International Residential Code (IRC) do not have a provision that specifically allows this assembly.