GAF Ventilation & Attic Systems 2

Question 1

What is the primary purpose of attic ventilation in hot climates during summer months?

Accepted Answer

Reducing attic heat to lower cooling costs and extend shingle life

Answer

Preventing moisture buildup from rain

Answer

Increasing structural strength of the roof deck

Answer

Preventing bird nesting in the attic

Question 2

Which GAF product line provides low-profile external baffles that protect against wind-driven rain while allowing air to pass through the ridge?

Accepted Answer

Cobra® Snow Country Advanced

Answer

Cobra® Exhaust Vents

Answer

Deck-Armor™ underlayment

Answer

TimberLine® HDZ shingles

Question 3

When attic insulation is installed, what must be maintained between the insulation and the roof deck to ensure proper ventilation?

Accepted Answer

A minimum 2-inch clear airway channel

Answer

A vapor-permeable membrane

Answer

A rigid foam board layer

Answer

A radiant barrier foil

Question 4

What component is used at the eaves to keep insulation from blocking soffit vents and to direct airflow up toward the ridge?

Accepted Answer

Rafter baffles (vent chutes)

Answer

Drip edge flashing

Answer

Starter strip shingles

Answer

Ice and water shield

Question 5

A homeowner reports that their attic smells musty and the roof deck shows signs of moisture staining. What is the most likely ventilation-related cause?

Accepted Answer

Blocked or insufficient intake vents preventing moisture-laden air from escaping

Answer

Excessive exhaust ventilation

Answer

Too many ridge vents installed

Answer

Overinsulated attic floor

Question 6

According to GAF guidelines, mixing ridge vents and roof-mounted power attic ventilators (PAVs) in the same attic space is generally discouraged because:

Accepted Answer

PAVs can short-circuit airflow by drawing conditioned air through the ridge vent rather than attic air

Answer

PAVs use too much electricity when paired with ridge vents

Answer

Ridge vents are incompatible with PAV mounting flanges

Answer

PAVs void GAF warranty on ridge vent products

Question 7

What NFA ratio is typically required when a vapor retarder is present on the warm-in-winter side of the attic insulation?

Accepted Answer

1:300

Answer

1:150

Answer

1:75

Answer

1:500