Asphalt shingles
Showing results 1-9 of 9
Asphalt shingles missing
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Wind
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An inadequate number of fixings
Asphalt shingles – lower edges (tabs) of shingles are lifting
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Wind has lifted the lower edges of shingles, particularly when the adhesive may have become soft in warm weather
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Tabs were not secure because the sealing strip did not line up with the adjacent shingle when they were installed
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Incorrectly nailed shingles, for example where nails were fixed through the sealing strip, limiting the effectiveness of the seal
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The self-adhesive strip failed to fully adhere during cold weather installation
Asphalt shingles – missing or damaged ridge shingles
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Wind has lifted the lower edges of shingles, particularly when the adhesive has become soft in warm weather
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Inadequate tab adhesion to the course below
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The self-adhesive strip failed to fully adhere during cold weather installation
Asphalt shingles – ridges or peaks formed in the roof surface
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Movement of the underlay
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Timber sub-structure shrinkage
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Inadequate ventilation of the roof space
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Use of sarking (planks) instead of sheet plywood
Asphalt shingles – cupping and/or curling shingles
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Tabs were not secure because the sealing strip did not line up with the adjacent shingle when they were installed
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Incorrectly nailed shingles, for example where nails were fixed through the sealing strip, thereby limiting the effectiveness of the seal
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There has been moisture on the underside of the shingles due to high roof space moisture levels and inadequate roof space ventilation
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The shingles are at end of their serviceable life
Asphalt shingles – loss of chip coating
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Surface degradation due to age
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Careless walking on the roof
Asphalt shingles – surface cracking
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Surface degradation due to age
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Careless walking on the roof particularly in cold weather (asphalt shingles become brittle in cold weather)
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Shingles are at the end of their serviceable life
Asphalt shingles – discolouration of shingles
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Fungal growth due to organic matter that has fallen onto the roof from overhanging branches
Asphalt shingles – moss and lichen
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Insufficient cleaning
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The roof remains damp due to overhanging branches
