11.   Two brands of fiberglass shingles have had problems of premature failure.

n. + shingle >>共 30
roof 32.70%
asphalt 25.79%
cedar 12.58%
fiberglass 6.92%
ridge 2.52%
replacement 1.89%
asbestos-cement 1.26%
edge 1.26%
split-cedar 1.26%
wall 1.26%
fiberglass + n. >>共 132
insulation 13.25%
body 3.97%
batt 3.97%
shingle 3.64%
panel 3.64%
boat 3.31%
pole 3.31%
patch 3.31%
cow 2.65%
tape 2.32%
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