NHIE Insulation and Ventilation 2

Question 1

Which insulation material is manufactured primarily from recycled paper products treated with fire and pest retardants?

Accepted Answer

Cellulose

Answer

Fiberglass

Answer

Mineral wool

Answer

Expanded polystyrene (EPS)

Question 2

What is 'thermal bridging' in building construction?

Accepted Answer

Heat transfer through a structural element that bypasses the insulation layer

Answer

Heat transfer through the insulation material itself

Answer

Reflection of radiant heat within an attic cavity

Answer

Transfer of cold air through supply ductwork

Question 3

What fire hazard exists when insulation is placed directly over non-IC rated recessed light fixtures?

Accepted Answer

Heat buildup around the fixture that can ignite surrounding materials

Answer

Off-gassing from insulation chemicals near the fixture

Answer

Electromagnetic interference disrupting the circuit

Answer

Increased moisture accumulation inside the fixture housing

Question 4

In cold climates, where should a vapor retarder be positioned relative to insulation in an exterior wall?

Accepted Answer

On the warm interior side of the insulation

Answer

On the cold exterior side of the insulation

Answer

In the center of the insulation layer

Answer

Vapor retarders should be omitted in cold climates

Question 5

What is the minimum clearance typically required between non-IC rated recessed light fixtures and attic insulation?

Accepted Answer

3 inches

Answer

1 inch

Answer

2 inches

Answer

6 inches

Question 6

Which attic ventilation component uses a motor-driven fan to actively exhaust hot air?

Accepted Answer

Power attic ventilator (PAV)

Answer

Ridge vent

Answer

Soffit vent

Answer

Gable end vent

Question 7

What occurs when warm moist interior air contacts a cold surface and releases moisture?

Accepted Answer

Condensation at the dew point

Answer

Vapor diffusion

Answer

Air infiltration

Answer

Thermal bypass