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'A
TRADITION OF EXCELLENCE' SINCE 1949
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The
Name You Know
and Trust
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| Fequently Asked Questions | |||
Bilsters - Caused mainly by the expansion of trapped air and water - vapour or moisture or other gases. Deformations are not confined to exposed surfaces are spongy to the touch and may occur between any of the layers of a roofing system. Buckling - Warping or wrinkling of the roof membrane. Clawing - The downward curving of the butt portion of the shingle. This creates a hump along the leading edge and a widening of the cut out. The bulge thus created is susceptible to substantial damage by wind action, hail and ice. Clawing is part of the normal aging process of shingles and is a sign of long service. Crackling - After long exposure, a fissure pattern appearing on the shingle or roofing due to weathering of the asphalt. Crazing - Surface deterioration of a shingle by the formation of pattern of fine hairline cracks. Fishmounting - The raising of a portion of the butt edge (lower edge) of a shingle This curved short section tapers back into the shingle. Usually, only the front part of the shingle is affected. At the end of the exposure, the shingle will be perfectly flat. Fishmouthing also. |
