Illinois Roofing Practice Exam

When installing downslope side chimney flashing in an area with freeze-throw cycles and ice, what is the most appropriate method?

1. A Apron flashings over a membrane

2. B Ridge vent installation

3. C EPDM rubber flashing

4. D Metal sheathing

The correct answer is: A Apron flashings over a membrane

When installing downslope side chimney flashing in an area with freeze-thaw cycles and ice, using apron flashings over a membrane is the most appropriate method. Apron flashings are typically made of metal and are designed to direct water away from critical areas like chimney joints, helping to prevent water infiltration and potential damage. In an area prone to freeze-thaw cycles and ice, ensuring a watertight seal and proper drainage is crucial in maintaining the integrity of the roof and preventing moisture-related issues. Ridge vent installation (Option B) is not relevant to chimney flashing and is designed for ventilation purposes along the ridge of the roof. EPDM rubber flashing (Option C) is a material commonly used for roof flashings, but in areas with freeze-thaw cycles and ice, a more robust and weather-resistant material like metal would be more suitable. Metal sheathing (Option D) could be part of the solution, but on its own, it does not address the specific needs of chimney flashing in an area with freeze-thaw cycles.