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Property and Building Module 2 Review Exam Questions and Answers
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Property and Building Module 2 Review Exam Questions and Answers
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Property and Building Module 2 ReviewExam Questions and Answers
What is the right gauge for 15A? - Answer -14g
The Primary function of insulation is to? - Answer -To control heat loss
A vapor retarder is designed to? - Answer -Restrict vapor diffusion
What are the implications of an adequate air/ vapor barrier? - Answer -Moisture may get
into the building structure, causing damage
Name two purposes of house ventilation - Answer -1. Flushes moisture from
unconditioned spaces in winter and heat the spaces in the summer.
2. Provides fresh air for building occupants
2.
Define Relative Humidity. - Answer -The amount of moisture in the air relative to the
amount it could hold if saturated, expressed as percent
What is meant by drying potential? - Answer -The ability of a material or assembly to dry
our after it has gotten wet.
Why are roofs vented in the winter in cold climates? - Answer -We were not able to
completely stop air leakage to into cool roof spaces, so we need to get rid of that warm,
moist air.
What is the purpose of a heat recovery ventilator? - Answer -To transfer some of the
heat from the air exhausted from the house into the fresh air coming into the house
The Term ventilation might mean two very different things with respect to homes.
Explain the two different types of ventilation. - Answer -The Term ventilation might mean
two very different things with respect to homes. Explain the two different types of
ventilation.
Indicate where the air/ vapor barrier should be located in the wall assembly in a hot
humid climate? - Answer -On the outside or not at all
,List four common forms that insulation materials may be found in - Answer -1. Loose Fill
2. Batts or blankets
3. Rigid board
4. Foam-in-place
What forms does insulation materials come in? - Answer -1. Loose, fill, batt, board
What is the function of an air barrier? - Answer -To stop air movement through building
walls and roofs.
Indicate two reasons we are interested in controlling air movement through building
walls and roofs. - Answer -Indicate two reasons we are interested in controlling air
movement through building walls and roofs.
Describe the function of a vapor barrier. - Answer -Protect the building from moisture
damage. Designed to protect from moisture due to vapor diffusion, not air movement.
List two other names for vapor barriers. - Answer -1. Vapor retardant
2. Vapor Diffusion Retarder
Is it more important for the air barrier or vapor barrier to be continuous? - Answer -Air
Barrier
Should the vapor barrier be on the warm side or cold side of the wall assembly? -
Answer -Warm side
Should the vapor barrier be on the warm side or cold side of the wall assembly in a hot,
humid, climate? - Answer -Warm Side
List four types of roof vents - Answer -1. Soffit
2. Ridge
3. Roof
4. Gable
What percent of total venting be at the soffits? - Answer -50%
What percent of total venting should be high on the roof? - Answer -50%
When can soffit venting be omitted safely? - Answer -If there are gable vents at
opposite ends
What do soffit vent baffles do? - Answer -Prevent insulation from covering vent
How are mansard or gambrel roofs ideally vented? - Answer -Required at the ridge and
bottom of upper section: none required on steep section
,Is it possible to over-ventilate and attic? If so, why? - Answer -Yes, if the ceiling is not
well sealed. This can cause negative pressure in attic that promotes warm, moist air to
enter at a faster rate
What should you were when inspecting attics? (3) - Answer -1. Mask
2. Goggles
3/ Longsleve shirt, tight cuffs
List at least three things that may make attics dangerous. - Answer -1. Fall through
2. Electric Shock
3. Irritate Lungs, eyes, and skins
Under what circumstances should insulation cover recessed lights? What is one
inspection strategy to help identify recessed lights while in the attic? - Answer -Only if
lights are proper type, or installed in drywall boxes, look for the double-shell or IC Stamp
Will you ever see walls in attics? Where? Should the be insulated? - Answer -1. Walls
indicate skylights or light wells
2. Yes, they should be
What two things should you be looking for on ducts in attics? - Answer -1. Insulation
2. Air/Vapor Barrier
How should insulation be handled around metal vents? - Answer -Vent is contained in a
boxed- in area to keep insulation away
How should insulation be handled around masonry chimneys? - Answer -Should only
have non- combustible insulation surrounding them
What are the implications of air/ vapor barriers that are missing or incomplete? - Answer
-1. Air leakage
2. Rot Damage
3. Insulation gets wet from condensation
What is suggested by snow on attic insulation below roof vents? - Answer -If soffit vent
is missing, rain and snow may actually be drawn into the roof vents
List three possible concerns with turbine vents. - Answer -1. No vent on calm days
2. too much vent on windy days
3. Noisy or seized
Should power vents be operating in the winter? - Answer -No, they depressurize the
attic
What is suggested by mold or rot on rafters and sheathing? - Answer -An exhaust fan
dumping warm moist air directly in attic.
, Describe one possible way to get a look at insulation in a flat roof. - Answer -1. Remove
ceiling light fixtures or exhaust vent fan covers (with no power off)
2. Pop fascia vent off and look through holes
What things might suggest wet insulation? - Answer -Staining sponginess or dampness
on ceilings
Describe two strategies used to used to deal with venting of flat roofs. - Answer -1. Vent
the roof space
2. Seal the roof cavity
On a flat roof, where will you most often see the vents? - Answer -Opposing fascias
What is an appropriate ratio of vent are to roof area? - Answer -One square foot of
venting for every 150 square feet of roof area.
Basement wall insulation is necessary. T/F? - Answer -False
All crawlspaces should be vented. True or False? - Answer -True, if unheated- vent to
outdoors to remove warm, moist air in cold
List three safety issues involved in inspecting crawl spaces. - Answer -1. Wet floors
2. Animals
3. Dark and dirty
Describe two possible strategies for keeping floors over unheated spaces warm. -
Answer -1. Heated cavity between Floor and insulation
2. Spray in place foam that fills entire cavity
What are baffles? - Answer -They prevent insulation from covering the roof vents and
allow air to flow up through the soffit vents into the roof space.
What are batts? - Answer -Fiberglass and mineral wool commonly batts or blankets.
What are blankets typically laid over? - Answer -Ceiling joists
What is the cool wall effect? - Answer -This is a phenomenon that makes you feel cool
in a room that's 72 (perfectly comfortable) if you are sitting close to an uninsulated wall
on a winter day.
What is the cool wall effect the result of? - Answer -Heat radiating directly from your
body to a cold surface. Heat flows from warm bodies to cold.
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