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Hm Inspect Attic Ins
Inspect attic, insulation, and ventilation
| Question | Answer |
|---|---|
| T/F You are required to inspect the insulation in unfinished spaces, including the attic. | True |
| T/F You're required to inform your client about the absence or lack of adequate insulation in areas of the house. | True |
| Heat can move from one body to another by radiation. | True |
| _______ is the transfer of heat energy by electromagnetic wave motion. | Radiation |
| ________ is the transfer of heat from one molecule to another, or through one substance to another. | Conduction |
| ________ is the transfer of heat by warming the air next to a hot surface and then moving that warm air. | Convection |
| _____ air is less dense than _____ air. | Hot..... cold |
| Water vapor may move in three ways. What are they | air transportation; diffusion through materials; and thermal diffusion. |
| Of the three water vapor may move, _________ accounts for more than 98% of all water vapor movement in building cavities. | Air movement |
| What is an effective moisture control strategy? | carefully and permanently air sealing any unintended paths for air movement in and out of the house |
| What is vapor diffusion? | how moisture in a vapor state moves through a material because of a difference in pressure (known as the pressure gradient) or a difference in temperature (known as the thermal gradient) |
| T/F Vapor Diffusion is Air Movement? | False |
| Thermal or heat diffusion happens when moisture in a vapor state moves from a warm part of an assembly to the ______part. | cold |
| The study of moist air properties is technically referred to as | psychrometrics |
| The temperature and moisture concentration at which water vapor begins to condense is called what? | Dew point |
| There are four general things that your client can do to avoid moisture problems. What are they? | Prevent water intrusion. Ventilate. Stop air leaks. Provide a path of escape for moisture. |
| T/F An inspector is not required to report any present conditions or clear indications of active water penetration that s/he observes. | False. |
| T/F: Water damage that is visible during an inspection should be reported to your client. | True |
| T/F: Water shut-off valves should be readily accessible and identified so that the water supply can be easily turned off in the event of a plumbing leak. | True |
| T/F: An inspector is required to report any present conditions or clear indications of active water penetration observed at the time of the inspection. | True |
| The temperature and moisture concentration at which water vapor begins to condense is called the _____. | Dew point |
| How does insulation work? | Insulation provides resistance to heat flow. |
| What does reflective insulation limit? | Reflective insulation limits heat that travels in the form of radiation. |
| Insulation's resistance to heat flow is measured or rated in terms of its thermal resistance, better known as its | R value |
| It is recommended that the insulation installed in an attic covers the tops of the a _____________. | attic floor joists. |
| The total R-value for loose fiberglass when you see about 6 inches thick of insulation at the floor of the unfinished attic is approximately _____. | (6 inches x 2.5) = 15 R-value |
| The R-value per inch of material for fiberglass batt insulation is ______. | 3.2 |
| According to the DOE, the minimum R-value for a ceiling in a home located in Zone 5 is _____. | 49 |
| According to the DOE, the minimum R-value for a ceiling in a home located in Zone 2 is _____. | 38 |
| T/F: The insulation recommendations made by the U.S. DOE for attics, ceilings, walls and floors have been increased overall and generally exceed those required by most building codes. | True |
| T/F: Insulation that is compressed will not provide its full rated R-value. | True |
| It is recommended that the insulation installed in an attic covers the tops of the attic floor joists to stop _________. | thermal bridging |
| Adding more ______ where you already see insulation, such as in the unfinished attic floor area, will likely reduce energy bills. | insulation |
| It is _____ to install loose-fill, rolled or foam-in-place insulation around knob-and-tube wiring. | hazardous |
| T/F You are required to check the mechanical ventilation systems by activating thermostatically operated fans. | False |
| You are required to move a representative number of drop-ceiling tiles. | False |
| T/F: Electrically powered roof fans are not ideal because they typically use more energy than they save. | True |
| T/F: Ventilation of attic areas is intended to prevent the accumulation of moisture vapor in the attic-roof space and to dry low levels of condensation that may form on the underside of a roof deck. | True |
| There should be a minimum space of ____ provided between the insulation and the roof deck sheathing and at the location of the vent. | 1 inch |
| T/F: A combination of continuous ridge vents along the peak of the roof and continuous soffit vents at the eaves provides the most effective ventilation. | True |
| The rule of thumb to remember is to use 1 square foot of net-vent opening for every _____ square feet of insulated ceiling, or 1:____ if the insulation has a vapor diffusion retarder. | 150/300 |
| T/F: Powered roof fans can cause problems, such as sucking conditioned air from the house's interior through leakage pathways in the ceiling. | True |
| A common problem inspectors will see is insulation compressed into the eaves area that was done in order to fit it into the tight space, which ______ its R-value. | Diminishes |
Created by:
davidkintner