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Abstract
Since 1991, thermal load histories for various roof cladding types have been monitored in outdoor attic structures that simulate classic North American light-framed construction. In this paper, the 2005 thermal loads for wood-based composite roof sheathing, wood rafters, and attics under wood-plastic composite shingles are compared to common North American roof cladding materials, solid wood shingles and black-and white-fiberglass shingles. WTPC-shingles have appeared to suffer no damage after over three-years of weathering and solar exposure. The summertime thermal load data for flakeboard and plywood sheathing temperatures under wood-plastic composite shingles were cooler than sheathing under North America's most commonly used fiberglass shingles. Lower shingle, sheathing and rafter temperatures should provide increased roof-system service-life.
Keywords
Building materials,
service life,
glass fibers,
weathering,
sheathing,
roofing,
thermal fatigue,
shingles,
temperature,
roofs,
thermoplastic composites,
composite materials,
thermal properties,
western red cedar,
thermal stresses,
durability,
wood-plastic composites
Citation
Winandy, J. E. 2006. Thermal load histories for North American roof assembles using various cladding materials including wood-thermoplastic composite shingles. 6th Global Wood and Natural Fibre Composites Symposium : April 04-05, 2006 : scientific presentations. Kassel, [Germany] : Institut fur Werkstoffechnik Kunststoff- und Recyclingtechnik, Universtiy of Kassel, 2006: 8 pages.
