Home Inspector Roofing Systems and Materials Flashcards
7 cards from real Home Inspector Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Home Inspector Roofing Systems and Materials flashcards as text
What is the standard minimum headlap for asphalt roof shingles?
Answer: 2 inches
A 2-inch minimum headlap is required for standard asphalt shingles to ensure water cannot penetrate between courses.
Which roofing condition is described as 'fish-mouthing'?
Answer: Shingles with raised lower edges creating an opening
Fish-mouthing occurs when the lower edge of a shingle lifts away from the surface below it, creating an open gap resembling a fish's mouth.
A home inspector notes that the roof deck shows sagging between rafters. What is the most likely cause?
Answer: Inadequate decking thickness or rafter spacing
Sagging between rafters (also called racking) typically results from decking that is too thin for the rafter spacing, or from structural rafter damage.
What is the purpose of an ice and water shield membrane?
Answer: To prevent water infiltration from ice dams and wind-driven rain
Ice and water shield is a self-adhering membrane installed at eaves and valleys to block water from ice dams and wind-driven rain from entering the structure.
Which of the following best describes step flashing?
Answer: Individual L-shaped metal pieces interwoven with shingles at a vertical wall
Step flashing consists of individual L-shaped metal pieces installed one per shingle course where a roof meets a vertical wall, directing water onto the shingles.
A home inspector observes that a metal roof has exposed fasteners. What concern should be noted?
Answer: Potential for leaks as fastener sealants degrade over time
Exposed fastener metal roofs rely on neoprene washers and sealants that degrade over time, eventually allowing water infiltration at each fastener point.
What roofing feature is designed to allow hot air to escape from an attic space at the highest point of the roof?
Answer: Ridge vents
Ridge vents run along the peak of the roof, allowing hot air that rises to the apex of the attic to exhaust continuously.