Selection should include

• considering cost
• considering types of materials
• considering local climate data
• calculating heat loss
• calculating ventilation.

Process/Skill Questions:

• What are the advantages and disadvantages of different insulation types (e.g., fiberglass, foam, cellulose)?
• How is the heat loss of various insulating materials calculated?
• How do heating-degree days (or winter-degree days) affect the selection of insulating materials?
• What is R-value, and why is it important?
• Why is ventilation important when installing insulation?