Exam 16: Insulation and Ventilation

The most effective way to vent moisture from under a roof is __________.

Air leakage is the major cause of moisture getting into the insulation layer.

Ventilation removes condensation by a process called __________.

The most commonly used material for a vapor retarder is ____ film.

The material installed above fiberglass insulation at the eave to allow air movement is called __________.

Air is what makes most insulations work well as insulation.

Extruded polystyrene insulation boards lose the ability to insulate after coming into contact with water.

Airtight construction techniques also serve as a vapor retarder (barrier),

____ insulation is supplied in bags or bales and placed by pouring, blowing, or packing by hand.

Liquid water can enter a building at the eaves in the winter if __________ form on the roof.

____ foams have the best R-value per inch.

The type of insulation that requires a 3/4 inch space between other materials and itself is _____.

Air-insulation dams are installed to protect the insulation from ____.

If insulation looks neat it is mostly installed correctly.

The structural material which has the best insulative properties is ______.

At the ____ point, air is completely saturated with moisture.

In a well-ventilated area, any condensed moisture is removed by ____.

Water vapor tends to condense onto warmer surfaces.

Insulation is usually installed before drywall and mechanical devices.

Care should be taken when using foamed-in-place insulation around __________.