Case Study
Customer:
Project Completed: n/a
Type of Roof: asphalt shingle
Materials: n/a
Location: Vancouver, BC
Project Completed: n/a
Type of Roof: asphalt shingle
Materials: n/a
Location: Vancouver, BC
Roof Analysis:The house’s primary steep pitch waterproofing is an organic Interlock asphaltic shingle. Other flat roof systems include a modified asphalt SBS (Styrene Butadiene Styrene) granular membrane roof, a built up tar and gravel roof and an unspecified asphaltic membrane roof system. The quantity or components of the existing and underlying systems have not been determined by a test cut. The roof deck is wood throughout. Cap flashing is consistent and appears to be installed appropriately. Ventilation is lacking.
Issues of note:
See photos above
Summary and Recommendations:
The only truly acceptable roof system is that of the SBS membrane in the NE corner. All other roof systems are susceptible to potential leakage due to age.
Issues of note:
See photos above
Summary and Recommendations:
The only truly acceptable roof system is that of the SBS membrane in the NE corner. All other roof systems are susceptible to potential leakage due to age.
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