Answer :
When it comes to counter flashing, the top edge is either covered by siding or inserted into roof shingles. This helps provide a secure and watertight seal to protect the joint between the vertical surface and the roofing material.
The correct answer is B. Roof shingles.
In construction, counter flashing is used to protect the top edge of base flashing, which is typically installed on vertical surfaces such as chimneys or walls. Counter flashing is designed to prevent water from penetrating the joint between the vertical surface and the roofing material.
The top edge of counter flashing is typically covered by siding or inserted into roof shingles.
Option A, mortar joints, is not typically used for counter flashing as it can deteriorate over time and may not provide a secure attachment for the flashing.
Option C, concrete foundation, is not applicable to counter flashing as it refers to a different part of the building structure.
Option D, window frames, is also not applicable to counter flashing as it refers to a different component of the building.
