Module Four 27203-13 Thermal and Moisture Protection

What percentage of heat and air infiltration escape through conventionally insulated homes?

55 Percent

When is a wall insulated?

Between temperature gradients

How do you find the amount of insulation needed for a building?

Divide the square footage by the coverage of each insulation package

What coarse material should be installed under a basement slab for drainage to the perimeter six inch drain?

Gravel

What should you complete before starting a insulation project?

Job Hazard Analysis

How do you figure area of a building?

Length x Width

What recommendations should always be followed for flashing windows or doors?

Manufactures

What is the preferred fasteners to be used on rigid insulation?

Nails or screws with large washers

A measurement of a materials ability to allow liquids or gases to pass through it?

Permeability

What type of material is installed over wall studs and ceiling joists after insulation?

Polyethylene Film

Define permeable

Porous; having small openings that permit liquids or gases to seep through it.

What do gloves protect you from when installing fiberglass insulation?

Protects from irritation

The resistance to conductive heat flow through a material or gas is called?

R value

What is the recommend R-value for a moderate comfort standard in a ceiling?

R-26

What is water stop made of?

Rubber or PVC

Define SDS?

Safety Data Sheet

Name three types of PPE for the installation of insulation.

Safety Glasses, Gloves and Hard Hat

Define Water stop?

Thin sheets of rubber, plastic, or other material inserted in a construction joint to obstruct the seepage of water through it.

What is the function of a vapor barrier?

To prevent moisture from getting to the insulation

How is moisture prevented in attic spaces?

Ventilating the area