Final answer:
Felt underlayment on tile roofs with a pitch of 4:12 or greater should have a minimum of a 2-inch headlap.
Step-by-step explanation:
The question concerns the installation specifications for tile roofs, specifically the required headlap for felt underlayment on a roof with a slope of 4:12 or greater.
The correct answer is a minimum 2-inch headlap. The headlap is the part of the roofing material that overlaps the layer beneath it, providing an additional barrier against water penetration and ensuring proper water shedding. In the context of roofing, a proper headlap is crucial to maintain the roof's integrity and prevent leaks.
Felt underlayment on tile roofs with a pitch of 4:12 or greater should have a minimum 2-inch headlap.
This ensures a proper barrier against water penetration and is essential for maintaining the roof's integrity.