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Allstars Inspection 宏厦驗屋 |
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Common Roofing Problems | |
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Ice dam at skylight and roof edges
Ice dams allow leakage through the roof into the soffit, fascia and wall. Leak can also develop at the interior of the building. |
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Damaged shingles
These asphalt shingles are near the end of it life and need to be replace. |
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Damaged slate shingle |
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Damaged wood shingle |
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Damaged clay tile shingle |
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Skylight leaks
Skylight without curbs are usually low quality and prone to leak |
Common Flat Roof Problems | |
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Blister due to heat or hail |
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Alligatoring (cracks) |
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Ridging and fish mouths |
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Gravel erosion |
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Seam opening |
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Modified Bitumen roofing damages |
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Ponding or no roof drains |
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EPDM damages
EPDM membrane is vulnerable against petroleum based products such as oil. The damage shown is caused by oil leaking from the HVAC unit. |
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Poor open valley flashing
Valley is subjected to heavy flushing during storm and snow accumulation. Metal flashing is normally used at roof valley. |
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Closed valley
Not as good as open valley with metal flashing, but still better than open valley with asphalt shingles. |
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Chimney flashing
Poor flashing around chimney is vulnerable to water penetration |
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Damaged Stack Flashing |
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Damaged soffit and fascia |
