Final answer:
The minimum attic venting for an attic without a vapor barrier is 1 square foot for every 150 square feet of attic floor space.
Step-by-step explanation:
The minimum attic venting requirement for an attic without a vapor barrier is 1 square foot of net free vent area for every 150 square feet of attic floor space. This means the correct answer to your question is B. 150. Understanding the proper ventilation ratio is crucial as it helps prevent moisture buildup, which can lead to mold growth and wood rot, while also helping control the temperature in the attic space. Proper venting can also significantly impact energy efficiency in a home by reducing heating and cooling costs.
Answer: B. 150