Home Inspector Test Home Inspector Insulation and Ventilation

Question 1

What is the minimum recommended R-value for attic insulation in a cold US climate zone (Zone 5–8)?

Accepted Answer

R-49

Answer

R-19

Answer

R-30

Answer

R-60

Question 2

Which type of insulation is most commonly found loose-filled in older attics and may contain asbestos?

Accepted Answer

Vermiculite

Answer

Fiberglass batts

Answer

Spray foam

Answer

Cellulose

Question 3

What is the purpose of a vapor retarder installed on the warm side of insulation?

Accepted Answer

Prevent moisture migration into wall or ceiling cavities

Answer

Improve R-value

Answer

Act as a fire barrier

Answer

Reduce air infiltration only

Question 4

A home inspector finds that attic insulation is blocking soffit vents. What is the primary concern?

Accepted Answer

Restricted attic ventilation leading to moisture and heat buildup

Answer

Reduced R-value of the insulation

Answer

Fire hazard from insulation contact with wood

Answer

Pest entry through vents

Question 5

What is the standard net free area ventilation ratio required by most US building codes for attic ventilation?

Accepted Answer

1:150

Answer

1:100

Answer

1:200

Answer

1:300

Question 6

Which insulation material has the highest R-value per inch?

Accepted Answer

Closed-cell spray foam

Answer

Fiberglass batt

Answer

Open-cell spray foam

Answer

Cellulose