4. A 2 X4 knee wall, if insulated, should be to what R value? 5. The clearance between insulation and a furnace vent should be:

Transcription

1 Weatherization -Basic Final Exam NAME 1. Infiltration is: a. Heat movement through solid materials b. The uncontrolled air flow through holes and cracks c. Heat flow through dead air spaces d. Heat transfer through liquids 2. Heat tends to: a. Move from the ceiling to the floor b. Seek cold c. Stay in the same place d. None of the above 3. All injuries are reported to: a. Co-worker b. Friend c. Home owner d. Crew Supervisor 4. A 2 X4 knee wall, if insulated, should be to what R value? a. R-7 b. R-11 c. R-15 d. R The clearance between insulation and a furnace vent should be: a. No clearance is required b. 1 inch c. 2 inches d. 3 inches 6. The R in R -value refers to the resistance to heat loss or gain:

2 7. Conduction is the: a. Movement of heat through a solid object b. Movement of heat through liquids c. Heat movement through holes and cracks d. Heat transfer from a warm surface to a cold surface without heating the air in between 8. Which is most likely to contribute to an attic moisture problem? a. Not enough vents b. Covered lighting fixtures c. An attic with too much insulation d. An attic with no insulation 9. When entering an attic, ensure that: a. You are wearing the appropriate safety equipment b. The joist system supports weight of insulation and crew c. You check the ladder for safety 10. Approximately 5 ½ of cellulose yields an R -value of: a. R-8 b. R-11 c. R-19 d. R Cellulose and Fiberglass are the most common materials used for attic insulation. 12. In an un-insulated home, the greatest heat loss occurs through the: a. Walls b. Attic c. Floor d. Doors

3 13. How is insulation rated? a. By the color of the material b. By the brand name of the insulation c. By Its R -value d. None of the above 14. Attic insulation may only be installed between: a. Bedrooms and living room b. Garage and patio c. Conditioned and non-conditioned area 15. When insulation gets wet, its R value: a. Stays the same if a vapor barrier is used b. Decreases c. Stays the same d. Increases 16. If a water heater has earthquake straps in place, remove the straps, wrap the water heater and reattach the straps: 17. For proper operation, gas water heaters require combustion air: a. At the top only b. At the bottom only c. At both the top and bottom 18. Two types of materials can be used as barriers to protect HPD s, fiberglass batts and metal barriers: 19. Which of the following is flexible insulation? a. Fiberglass batts and rolls b. Cellulose c. Rigid d. Rock Wool

4 20. Using the 150 sq. ft. formula, how much venting is required for an attic having 1500 sq. ft.? a. 5 sq. ft. b. 8 sq. ft. c. 10 sq. ft. d. 15 sq. ft. 21. Attic insulation should not be installed if: a. Roof leaks b. Joist system is more than 24 inches on center c. Attic clearance is less than 24 inches 22. If decayed electrical wiring is found in the attic, you should: a. Notify the crew supervisor of the problem b. Turn off power before insulating the attic c. Wrap wire with tape before installing insulation d. Install insulation while being careful not to touch the wires 23. If you find vents to water heater, furnace, kitchen exhaust fan, or a chimney terminated in the attic, can you insulate? a. Yes b. No 24. The purpose of attic vents is to: a. Prevent moisture build up in winter b. Reduce heat build in summer c. Both a and b d. None of the above 25. As a general rule, how many square feet of attic venting is needed for each 150 square feet of attic floor space? a. 1 sq. ft. b. 3 sq. ft. c. 5 sq. ft. d. 8 sq. ft.

5 26. Which of the following should not be covered with loose-fill insulation: a. Eave vents b. Open junction boxes c. Furnace and water heater vents 27. When installing insulation around HPD s: a. Wrap HPD with cardboard b. Install appropriate type barrier with 3 inch clearance on all sides c. Keep cellulose at least 36 inches away from HPD d. None of the above 28. When replacing window glazing, cut pane 1/8 inch smaller to: a. Allow caulking to bond with wood and glass b. Allow for expansion and contraction c. Make it easy to install 29. Some typical unsafe attic conditions are: a. Faulty wiring b. Unsafe joist system c. Rat infestation 30. Safety glass must be installed inches from a door: a. 24 inches b. 8 inches c. 12 inches d. 36 inches 31. Place broken glass in a and remove from customer s premise: a. Metal container b. Customer s trash can 32. Glazing repair, is the use of silicone caulking to repair a small crack and/or no more than two BB holes:

6 33. The best caulking material for most jobs is? a. Oil base b. Latex c. Acrylic latex caulk plus silicone d. Silicone 34. Cracks between 3/8 and 5/8 should be filled with: a. Fiberglass or closed cell polyethylene (foam) rod b. A triple bead of oil base caulk c. Wood putty 35. The purpose of weather-stripping is to reduce: a. Convection b. Conduction c. Infiltration d. Radiation 36. Cracks between 1/16 and 5/8 can be caulked: 37. Which of the following thresholds is not recommended? a. Gasket saddle b. Aluminum saddle c. Wood saddle d. Half saddle/bump up 38. The best general purpose door jamb weather-stripping is: a. Rigid gasket b. Pliable gasket c. Felt type d. Interlocking 39. Fire doors can be modified to install a door shoe or threshold:

7 40. Adhesive backed foam weather-stripping can only be used on metal jambs and attic access openings: 41. A propane torch can be used to remove a shower head and/or old window glazing compound: 42. For safe operation, tape and blanket must be kept inches from the draft hood on a gas water heater: a. 2 inches b. 3 inches c. 4 inches d. 5 inches 43. What important factor is required, when insulating water pipes? a. All joints must be tightly sealed b. Have all pipe insulation be identical c. Insulating pipes are found in a conditioned space 44. Insulation, weather-stripping, and caulking should be installed between: and space. 45. Which area should be covered on an electric water heater but not on a gas water heater? a. Pressure relief valve b. Thermostat control c. Top of heater d. Drain valve 46. You can trust the advise of a dog owner when they say, My dog won t bite :

8 47. What would clearly indicate a water heater is electric? a. No P/T valve b. Drain valve location c. Tank has no legs d. No vent opening at top of water heater 48. Caulking can be substituted for glazing compound: 49. Pieces of glass left on the ground or in the home can be picked up by small children or stepped on by bare feet: 50. A caulking bead must be continuous and free of voids: