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WEATHERIZATION TECH 101

WEATHERIZATION TECH 101. NASCSP 2011. WEATHERIZATION ASSISTANCE PROGRAM. Basic Audit Tools. Auditor’s Toolbox. Photos courtesy of The US Department of Energy. Tool Case. Auditor’s Toolbox. Photos courtesy of The US Department of Energy. Vision Enhancers. Auditor’s Toolbox.

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WEATHERIZATION TECH 101

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  1. WEATHERIZATION TECH 101 NASCSP 2011 WEATHERIZATION ASSISTANCE PROGRAM

  2. Basic Audit Tools Auditor’s Toolbox Photos courtesy of The US Department of Energy

  3. Tool Case Auditor’s Toolbox Photos courtesy of The US Department of Energy

  4. Vision Enhancers Auditor’s Toolbox Sony digital camera Boroscope Testo Video Pro Flir Infrared Photos courtesy of The US Department of Energy

  5. Combustion Appliance Testing Auditor’s Toolbox Photos courtesy of The US Department of Energy • Above (left to right): • Thermometer. • Draft Gauge. • Inspection mirror. Above counter-clockwise from lower left: • Pipe wrenches. • Long lighter. • Gas leak detector. • Inspection mirror. • Gas leak detection bubbles. • Smoke pump and smoke test filter paper. • Combustion analyzer.

  6. Smoke Auditor’s Toolbox Wizard Stick Photos courtesy of The US Department of Energy

  7. Manometers & Gauges Auditor’s Toolbox • Magnahelicgauges DG-700 (Energy Conservatory) DM-2 (Retrotec)

  8. Blower Door with Infrared Auditor’s Toolbox Without Blower Door With Blower Door Running

  9. Pressure Pan Auditor’s Toolbox Photo courtesy of The US Department of Energy

  10. Diagnosing Ducts Auditor’s Toolbox Common mobile home duct pattern Bedroom 0.8 Pa Bedroom 1.2 Pa Bath 2.4 Pa Furnace Closet (living rm) 2.6 Pa Living Room 2.0 Pa Kitchen 1.2 Pa Kitchen 0.5 Pa Total: 10.7 Pa =seal ducts 2.4 Pa at bath register & 2.6 Pa at living room register indicate a large leak between them, most probably at the furnace plenum. Photo Source: US Department of Energy

  11. Duct Blaster Auditor’s Toolbox Photo courtesy of The US Department of Energy

  12. Measuring Exhaust Fan Flow Auditor’s Toolbox Energy Conservatory Exhaust Fan Flow Meter with DG-700 Pressure & Flow Gauge Photos courtesy of The US Department of Energy

  13. Moisture Assessment Auditor’s Toolbox “Pin” or “Non contact” moisture meters Indoor/outdoor reads RH. Sling psychrometer.

  14. Circuit Testing & Tracing Auditor’s Toolbox Live wire tester, especially useful for determining if knob & tube wiring is still live. Circuit tracer determines which fuse/breaker controls which circuit. Tells auditor percent overload on circuit, among other outputs.

  15. Base Load Analysis Auditor’s Toolbox Indoor/outdoor thermometer, useful in measuring refrigerator/freezer compartment temperatures. Newer model watt meter - BrultechKit60 with 1220B. Watt meter.

  16. Typical Weatherization Measures In no particular order

  17. Air Sealing and Attic Prep WEATHERIZATION INSTALLER/TECHNICIAN INTERMEDIATE WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010

  18. Air Leakage Review AIR SEALING & ATTIC PREP • Air flow is measured in cubic feet per minute. • Also written as ft3/min, or CFM. • 1 CFM OUT= 1 CFM IN. • Air flow takes the path of least resistance. • Air moves from high-tolow-pressure areas. • Air moves from high-tolow-temperature areas.

  19. Primary Air Infiltration Sites AIR SEALING & ATTIC PREP 5% Fans & Vents 12% Windows Floors, walls, and Ceilings 36% 13% Doors Electric Outlets 2% 15% Plumbing Penetrations Fireplace16% Data courtesy of the California Energy Commission

  20. Common Tools for Attic Prep AIR SEALING & ATTIC PREP 8 • Urethane foam (spray foam) • Foam board • Sheet metal/foil • Mastic and gloves • High-temperature caulk • Utility flags • Insulation rulers • Tin snips and zip ties • Stapler • Weatherstripping • Zip tie tightening tool • Utility knife 3 1 2 7 6 11 4 5 9 12 10

  21. Finding Air Leaks AIR SEALING & ATTIC PREP Check typical hot-spots: • Flues and plumbing vents. • Wire pathways. • Recessed fixtures (lights and fans). • Chimney penetrations. Signals: • Blower door, smoke. • Dirty or discolored Insulation. Photos courtesy of the US Department of Energy

  22. General Guidelines AIR SEALING & ATTIC PREP GAPS ≤ 1/4”Caulk Energy Blast Services The Daily Green GAPS 1/4” – 3”Spray foam OTHERFoam board, fiberglass in plastic bags, etc.

  23. Drywall Repair AIR SEALING & ATTIC PREP Sometimes sealing air leaks requires repairing damaged drywall. Photos courtesy of the US Department of Energy

  24. High Temperature Issues AIR SEALING & ATTIC PREP Recessed Light Fixtures Flues High-temp caulk IC Rated Fixture Maintain appropriate clearances Non-IC Rated Fixture Photos courtesy of the US Department of Energy

  25. Wiring AIR SEALING & ATTIC PREP Knob and tube wiring is common in old homes. • No insulation over knob & tube wiring. • All home electrical systems should be properly grounded. • Wiring splices enclosed in junction boxes and marked with a flag visible above attic insulation. Photo courtesy of the US Department of Energy

  26. Attic Insulation WEATHERIZATION INSTALLER/TECHNICIAN INTERMEDIATE WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010

  27. Cost-Effective Insulation Levels ATTIC INSULATION

  28. Not Enough Insulation ATTIC INSULATION

  29. Too Much Insulation ATTIC INSULATION

  30. Measuring Blown-In Insulation ATTIC INSULATION Photo courtesy of the US Department of Energy Staple rulers every 15 feet for even coverage. How much is in that back corner?

  31. Properly Insulated Attic ATTIC INSULATION Flags indicate juncture boxes, recessed lights Even layer of appropriate depth Dam maintains clearance around flue Photo courtesy of the US Department of Energy

  32. Dense-Pack Sidewall Insulation WEATHERIZATION INSTALLER/TECHNICIAN INTERMEDIATE WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010

  33. It Works DENSE-PACK SIDEWALL INSULATION “It is not unusual to reduce overall house leakage by 30% to 50% by dense-packing walls and other closed-in cavities.” - Home Energy Magazine, Nov/Dec 1995

  34. Typical Tools Used DENSE-PACK SIDEWALL INSULATION • Siding remover • Eye protection and dust mask • Hose cut at 45 degree angle • Drill bit • Plugs • Mister (for LSW) • Corded, 1/2” drill • Cellulose 8 6 2 4 3 5 1 7

  35. Order of Operations DENSE-PACK SIDEWALL INSULATION • Maintain equipment. • Inspect walls. • Determine fill strategy.(attic or wall, interior or exterior) • Remove siding (if exterior). • Drill. • Fill. • Replace/repair.

  36. Determine Fill Strategy DENSE-PACK SIDEWALL INSULATION • Blow in from attic if you can. • Interior. • Exterior. • Drill at top, bottom, middle?

  37. Remove Siding DENSE-PACK SIDEWALL INSULATION Aluminum Vinyl If it can be avoided, remove asbestos siding! Interior blow Wood Asbestos Photo courtesy of the US Department of Energy

  38. Aluminum Siding DENSE-PACK SIDEWALL INSULATION Photo courtesy of the US Department of Energy Pry and slide / May need metal cutter.

  39. Vinyl Siding DENSE-PACK SIDEWALL INSULATION Photo courtesy of the US Department of Energy Easier to work with than metal.

  40. Wood Siding DENSE-PACK SIDEWALL INSULATION Remove clapboards and pressed board. Remove enough shingles to re-cover holes. Photo courtesy of the US Department of Energy

  41. Drill DENSE-PACK SIDEWALL INSULATION • Properly size bit to accept fill tube and movement. • Drill at angle fill-tube will enter. • Address large cavities first to get blower busy before tackling details. • Probe around hole. Photos courtesy of the US Department of Energy

  42. Fill DENSE-PACK SIDEWALL INSULATION • Probe cavities for blocks - request holes where needed. • If holes are drilled in the middle of the wall, fill top then bottom. • Feed hose to farthest point from hole, then pull back 12”. • Cellulose-only blower: pull hose out 1’ at a time (Faster blower: pull out 2’). • Adjust air gate: 8’ Cavity should fill in 2 - 4 minutes.

  43. Proper Density DENSE-PACK SIDEWALL INSULATION • Check fill holes:Shouldn’t be able to stick your finger in. • Check material-to-Volume ratio: One 30 lb. bag should almost fill 3 8’ cavities with 2x4 16” O.C. framing. Photo courtesy of the US Department of Energy

  44. Trouble-Shooting or Shooting Trouble? DENSE-PACK SIDEWALL INSULATION If you’ve blown for overfour minutes without reaching proper density, find out where cellulose is going! Photo courtesy of the US Department of Energy

  45. Replace and Repair DENSE-PACK SIDEWALL INSULATION The job isn’t done until the house is put back together. Photo courtesy of the US Department of Energy

  46. MOBILE HOME TRAINING Duct Diagnostics and Repair WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010

  47. Forced Air System Operation #1 DUCT DIAGNOSTICS AND REPAIR A typical mobile home downflow distribution system

  48. Forced Air System Operation #2 DUCT DIAGNOSTICS AND REPAIR Return Air Furnace Vents Duct

  49. Problems and Opportunities DUCT DIAGNOSTICS AND REPAIR New factory installation includes duct tape Failed duct tape Photos courtesy of PA WTC

  50. Visual Checks #1 DUCT DIAGNOSTICS AND REPAIR Duct registers are common leakage sites Photos courtesy of PA WTC

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