1. eere.energy.gov1 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Windows and Doors WEATHERIZATION INSTALLER/TECHNICIAN FUNDAMENTALS WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012

2. eere.energy.gov2 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 By attending this session, participants will be able to: List correct window terminology. State how windows lose and gain heat. Explain the savings-to-investment ratio (SIR) for window and door replacement compared to other building shell retrofits. Identify various methods and materials for window and door treatments. Discuss recommended window and door replacement criteria. Identify methods and techniques for replacing windows and doors. Learning Objectives WINDOWS & DOORS

3. eere.energy.gov3 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 History Window and door treatments were common before cost- effectiveness requirements. Very popular with clients. Met required material-to-labor cost ratios. Before blower doors were common, couldnt quantify envelope leakage. WINDOWS & DOORS Photo courtesy of US Department of Energy

4. eere.energy.gov4 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 State of the Practice Blower doors identify air-sealing opportunities. Computerized energy audits list measures in order of SIR. Windows and doors rank low. Window and door replacement is far less common. WINDOWS & DOORS

5. eere.energy.gov5 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Solar Energy Solar Heat Gain Through Double Pane Insulated Window Principles Radiation to indoors Net solar transmission Heat absorbed by glass Reflected WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

6. eere.energy.gov6 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Glazing Assembly U-factorSHG Single glass10.87 Standard insulated glass 0.500.75 Low-e, high SHGC insulated glass 0.300.74 Low-e, low SHGC insulated glass 0.300.41 Comparison of SHGC and U-Factor WINDOWS & DOORS Photo courtesy of US Department of Energy

7. eere.energy.gov7 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 NFRC Window Label The NFRC rates windows on: U-factor. Solar heat gain coefficient. Visible Transmittance. Air leakage. Condensation resistance. WINDOWS & DOORS

8. eere.energy.gov8 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Heat Loss, Standard Window Assembly Radiation from indoors to outdoors Conduction through glass and spacers Convection adjacent to interior and exterior glass surfaces Indoors WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

9. eere.energy.gov9 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Low-e coating on outdoor side of inner pane Improved spacer Gas filled air space Heat Loss, Improved Window Assembly Improved spacer Low-e coating Gas filled air space Indoors WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

10. eere.energy.gov10 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Window Terminology Trim Glass Plane Head Jamb Upper Sash Side Jamb Lower Sash Stop Sill (sloped) Typical Wood Window Exterior WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

11. eere.energy.gov11 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Window Types AwningPictureCasementSliderDouble Hung WINDOWS & DOORS

12. eere.energy.gov12 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Window Treatments Where applicable: Replace broken glass Replace broken sash locks Weatherstrip meeting rails and sliding surfaces Install pulley seals Caulk interior trim V-Channels Stop Upper Sash Lower Sash WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

13. eere.energy.gov13 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Glass Replacement Remove broken pane. Measure opening, and cut new pane from glass sheet. Install, point, and glaze replacement pane. WINDOWS & DOORS Photo courtesy of the US Department of Energy

14. eere.energy.gov14 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Guidelines for Window Replacement Window replacement is not cost-effective unless: The existing window creates a hazard to health, safety, or building durability. The existing window is damaged or weathered beyond repair and the replacement material and labor cost is less than the cost of repair. Always attempt to repair or improve existing windows before considering replacement. Window replacement should not be considered a measure to reduce air infiltration or as a health and safety measure. Window selection should reflect the climate. Choose high SHGC in cold climates and low SHGC in hot climates. Look for low-e coatings on interior panes in cold climates and on exterior panes in hot climates. WINDOWS & DOORS

15. eere.energy.gov15 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 In-Jamb Replacement Method (Double Hung Window) Remove existing frame, sash pulley weights etc. Tip: Score all painted joints with a sharp utility knife prior to removal of window trim. Use a thin bladed pry bar to prevent marring the trim. Install a complete vinyl unit that fits inside the existing frame against the exterior window stops. Seal perimeter with low expanding foam to ensure an air tight installation. Reinstall existing interior trim and seal with caulk. Always employ lead safe work practices when lead based paint will be disturbed. WINDOWS & DOORS

16. eere.energy.gov16 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 In-jamb Replacement Method (Double Hung Window) WINDOWS & DOORS Photo courtesy of US Department of Energy

17. eere.energy.gov17 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 In-Jamb Replacement Method (Double Hung Window) WINDOWS & DOORS Photo courtesy of US Department of Energy

18. eere.energy.gov18 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 In-Jamb Replacement Method (Double Hung Window) WINDOWS & DOORS Photo courtesy of US Department of Energy

19. eere.energy.gov19 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 In-Jamb Replacement Method (Double Hung Window) WINDOWS & DOORS Photo courtesy of US Department of Energy

20. eere.energy.gov20 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Windows and Doors 1. Protect the floor 2. Wet surfaces prior to removal 3. Clean as you go 4. Dispose of old windows properly Photos courtesy of US Department of Energy

21. eere.energy.gov21 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Always install factory replacement single-hung or slider units that include self-storing storm windows. Mobile Home Jalousie Windows WINDOWS & DOORS Photo courtesy of the US Department of Energy

22. eere.energy.gov22 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Measure rough openings and acquire the replacements before removing any windows from the home. Always insist on factory-replacement windows. Mobile Home Window Replacement WINDOWS & DOORS Photos courtesy of the US Department of Energy

23. eere.energy.gov23 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Other Allowable Window Treatments Interior storm windows Moveable insulation systems Education, encouraging clients to use: –Simple methods for high and low ventilation during warm periods –Draperies during cold periods WINDOWS & DOORS Photo courtesy of the US Department of Energy

24. eere.energy.gov24 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Doors Replacements are not cost effective because of their high cost and relatively low impact on energy savings. Potentially significant air leakage and comfort issues are due to operational problems and poor seals. WINDOWS & DOORS Photo courtesy of the US Department of Energy

25. eere.energy.gov25 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Door Terminology Hinge Hinge Stile Stop Jamb Casing Threshold Bottom Rail Lock Rail Lock Stile Mullion Top Rail Panel WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

26. eere.energy.gov26 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Sweep Threshold Door Repair and Replacement Replace doors only when cost-effective as an envelope measure. Reduce air leakage. Ensure proper closure. Weatherization measures must have an SIR equal to or greater than 1. WINDOWS & DOORS Graphic developed for the US DOE WAP Standardized Curricula

27. eere.energy.gov27 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Replace the existing door with a solid core wood door blank. Use this method only if the existing rough opening is reasonably square and the frame is in good shape. Consider a pre-hung energy efficient unit that will fit the rough opening. This is accomplished in much less time than retrofitting a door blank. Manufacture doors on site for special situations such as open coal access areas adjacent to conditioned basements. Must employ lead-safe work practices when lead-based paint will be disturbed. Notes on Door Replacement WINDOWS & DOORS

28. eere.energy.gov28 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Use a factory replacement exterior pre-hung single door unit. Door framing may have to be replaced or the floor repaired. Mobile Home Doors WINDOWS & DOORS Photo courtesy of the US Department of Energy

29. eere.energy.gov29 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Replace deteriorated doors with factory replacements. Specify louvered doors if the home has fossil-fueled appliances to ensure adequate combustion air. Mobile Home DHWT Closets WINDOWS & DOORS Photo courtesy of the US Department of Energy

30. eere.energy.gov30 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012 Window and door retrofits should be limited to minor repairs and weatherstripping. Window and door replacements are generally not cost-effective and should only be considered as a last resort. Consider the climate when selecting replacement windows. Use lead-safe work practices when disturbing lead-based paint. Follow manufacturers instructions for measuring, specifying, and installing windows. Summary WINDOWS & DOORS