Energy Code Basics for Residential Buildings. Presented by Newport Ventures NEWPORT VENTURES
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1 Energy Code Basics for Residential Buildings Presented by Newport Ventures
2 Course Overview / Introduction 1. Overview of definitions and compliance changes 2. Building envelope requirements including air leakage 3. Mechanical systems requirements including duct leakage 4. Lighting: what s new and how best to implement 5. Compliance paths, a brief overview 6. Summary of challenges and energy impacts
3 Definitions Section 202 ERI Reference Design Roof Recover Conditioned Space Insulated Siding Continuous Insulation OVERVIEW
4 Compliance Paths R401.2 Prescriptive Sections R402 R404 Mandatory Items OR Performance Section R405 OR Energy Rating Index Section R406 OVERVIEW
5 BUILDING ENVELOPE Insulation Mandatory Requirements, Specific Requirements, Insulation Concepts Windows Prescriptive Alternatives Air Barrier/Air Sealing Vapor Barrier
6 Prescriptive Building Thermal Envelope Options R value Table R Component Insulation as Labeled Standard Products and Approaches U factor alternative Table R Tested Assembly U factor Alternative Approaches and Materials Total UA alternative Section R Whole Building Area weighted Average U factor BUILDING ENVELOPE
7 Insulation Table (See Workbook, page 12) Climate Zone Ceiling R Value Wood Frame Wall R Value Mass Wall R Value Floor R Value Basement Wall R Value Slab R Value & Depth Crawl Space Wall R Value / /13 10, 2ft 10/ or / /13 10, 2ft 10/ or / /19 10, 4 ft 10/13 Climate Zone Ceiling R Value Wood Frame Wall R Value Mass Wall R Value Floor R Value Basement Wall R Value Slab R Value & Depth Crawl Space Wall R Value or / /13 10, 2ft 10/ or / /19 10, 2ft 15/ ECCCNYS 2015 IECC or / /19 10, 4 ft 15/19 BUILDING ENVELOPE
8 Prescriptive and Mandatory Insulation Requirements Prescriptive Mandatory Primary Purpose R value & U factor Tables Table & Some Installation Details (R402.2) Installation Details Air Barrier and Insulation Installation Separate Conditioned & Unconditioned Space Act as Building s Thermal Barrier BUILDING ENVELOPE
9 Mandatory Insulation Installation Details Table R General Requirements Floors Ceiling/Attic Walls Rim Joists Crawl Space Walls Plumbing and Wiring Narrow Cavaties Shower/Tub on Exterior Wall Recessed Lighting BUILDING ENVELOPE
10 Mandatory Insulation Requirements Air Permeable Insulation Table R BUILDING ENVELOPE
11 Mandatory Insulation Requirements Drop ceilings and Soffits Table R BUILDING ENVELOPE
12 Mandatory Insulation Requirements Stud Corners and Headers Table R BUILDING ENVELOPE
13 Mandatory Insulation Requirements Exterior Wall Insulation Table R BUILDING ENVELOPE
14 Mandatory Insulation Requirements Floors Over Unconditioned Space Table R BUILDING ENVELOPE
15 Mandatory Insulation Requirements Rim Joists Table R BUILDING ENVELOPE
16 Mandatory Insulation Requirements Floors Over Unconditioned Space Table R BUILDING ENVELOPE
17 Mandatory Insulation Requirements Crawl Space Walls Table R BUILDING ENVELOPE
18 Mandatory Insulation Requirements Narrow Stud Cavities Table R BUILDING ENVELOPE
19 Mandatory Insulation Requirements Recessed Lighting Table R BUILDING ENVELOPE
20 Mandatory Insulation Requirements Plumbing and Wiring Table R BUILDING ENVELOPE
21 Mandatory Insulation Requirements Shower/Tub on an Exterior Wall Table R BUILDING ENVELOPE
22 Specific Insulation Requirements Prescriptive Ceilings w/ Attics Ceilings w/o Attics Eave Baffle Access Hatches/Doors Mass Walls Steel Frame Ceilings, Walls w/ Partial Floors Walls, and Floors Structural Sheathing Basement Walls Slab on Grade Crawl Space Walls Sunroom Insulation BUILDING ENVELOPE
23 Specific Insulation Requirements Raised Heel Trusses R BUILDING ENVELOPE
24 Specific Insulation Requirements Ceilings without Attics R BUILDING ENVELOPE
25 Specific Insulation Requirements Eave Baffles R BUILDING ENVELOPE
26 Specific Insulation Requirements Access Hatches and Doors R BUILDING ENVELOPE
27 Specific Insulation Requirements Mass Walls R CLIMATE ZONE MASS WALL R VALUE 1 3/4 2 4/6 3 8/13 4 except Marine 8/13 5 and Marine 4 13/ /20 7 and 8 19/21 BUILDING ENVELOPE
28 Specific Insulation Requirements Steel Framing Walls, Ceilings, and Floors R Wood Frame R Value Requirement Steel Truss Ceilings Cold Formed Steel Equivalent R Value R 30 R 38 or R or R R 38 R 49 or R R 49 R Steel Joist Ceilings R 30 R 38 in 2x4, or 2x6, or 2x8 R 49 any framing R 38 R 49 2x4, or 2x6, or 2x8, or 2x10 Steel Framed Walls R 13 R , or R , or R , or R , or R 15 + R 3.8, or R R R , or R , or R , or R , or R BUILDING ENVELOPE
29 Specific Insulation Requirements Floors R BUILDING ENVELOPE
30 10 Feet Specific Insulation Requirements Insulating Basement Walls R BUILDING ENVELOPE
31 Specific Insulation Requirements Slab Edge Insulation Details R BUILDING ENVELOPE
32 Specific Insulation Requirements Insulating Crawl Space Walls R BUILDING ENVELOPE
33 Specific Insulation Requirements Sunroom Insulation R Ceiling Insulation Zones 1 4 R 19 Zones 5 8 R 24 Wall Insulation All zones R 13 Fenestration U Factor Zones Skylight U Factor Zones BUILDING ENVELOPE
34 BUILDING ENVELOPE Insulation Windows Prescriptive Alternatives Air Barrier/Air Sealing Vapor Barrier
35 Prescriptive Requirement Table R (See Handout) Climate Zone Fenestration U factor Skylight U Factor SHGC NR NR NR Climate Zone Fenestration U factor Skylight U Factor SHGC NR NR 2010 ECCCNYS 2015 IECC BUILDING ENVELOPE
36 NFRC Testing and Labeling R BUILDING ENVELOPE
37 Prescriptive Window Flexibility R & R Area weighted average SHGC And Dynamic Glazing (R ) Area weighted average U factors (R ) BUILDING ENVELOPE
38 Exemptions R , R and Glazed Fenestration Exemption R square feet Opaque Door Exemption R One side hinged door 24 square feet Sunroom Fenestration R Thermally Isolated from Conditioned Space Max U 0.45 Max SHGC 0.70 BUILDING ENVELOPE
39 Mandatory Window Requirements Fenestration Air Leakage R BUILDING ENVELOPE
40 BUILDING ENVELOPE Insulation Windows Prescriptive Alternatives Air Barrier/Air Sealing Vapor Barrier
41 U factor Alternative R , Table (See Handout) Climate Zone Ceiling U Factor Wood Frame Wall U Factor Mass Wall U Factor Floor U Factor Baseme nt Wall U Factor Crawl Space Wall U Factor Climate Zone Ceiling U Factor Wood Frame Wall U Factor Mass Wall U Factor Floor U Factor Baseme nt Wall U Factor Crawl Space Wall U Factor ECCCNYS 2015 IECC BUILDING ENVELOPE
42 Mandatory Window Requirements Maximum U factor/shgc When Using Total UA or Performance Paths R402.5 Mandatory Limits to R Total UA Alternative and R405 Simulated Performance Alternative Climate Zone Max Area Weighted Window U Max Area Weighted Skylight U NYERSDA ENERGY CODE TRAINING BUILDING ENVELOPE
43 BUILDING ENVELOPE Insulation Windows Prescriptive Alternatives Air Barrier/Air Sealing Vapor Barrier
44 Mandatory Air Leakage Requirements R402.4 All Homes MUST Be Tested 3 Air Changes Per Hour at 50 Pa Pressure OR BUILDING ENVELOPE
45 Mandatory Air Barrier Requirements Continuous Ceiling/Attic Walls Rim Joists Garage Floors Crawl Space Walls Recessed Lighting Shower/Tub Windows, Skylights, Doors Shafts, Penetration Plumbing/ Electrical HVAC Registers Concealed Sprinklers BUILDING ENVELOPE
46 Mandatory Air Leakage Requirements Continuous Air Barrier Table R BUILDING ENVELOPE
47 Mandatory Air Leakage Requirements Ceilings/Attics: Attic Access Table R Building America Solution Center BUILDING ENVELOPE
48 Mandatory Air Leakage Requirements Ceilings/Attics: Dropped Ceilings/Soffits Table R BUILDING ENVELOPE
49 Mandatory Air Leakage Requirements Walls: Knee Walls Table R BUILDING ENVELOPE
50 Mandatory Air Leakage Requirements Walls: Top Plates Table R BUILDING ENVELOPE
51 Mandatory Air Leakage Requirements Walls: Sill Plates Table R BUILDING ENVELOPE
52 Mandatory Air Leakage Requirements Windows, Skylights and Doors Table R BUILDING ENVELOPE
53 Mandatory Air Leakage Requirements Rim Joists Table R BUILDING ENVELOPE
54 Mandatory Air Leakage Requirements Floors: Exposed Edges of Floor Insulation Table R BUILDING ENVELOPE
55 Mandatory Air Leakage Requirements Crawl Space Walls: Unvented Crawl Spaces Table R BUILDING ENVELOPE
56 Mandatory Air Leakage Requirements Shafts, Penetrations Table R BUILDING ENVELOPE
57 Mandatory Air Leakage Requirements Garages Table R BUILDING ENVELOPE
58 Air Leakage Mandatory Requirements Recessed Lighting R /Table R BUILDING ENVELOPE
59 Air Leakage Mandatory Requirements Plumbing and Electrical Table R BUILDING ENVELOPE
60 T R S O P RE W U E T N N E V Air Leakage Mandatory Requirements Shower/Tub on an Exterior Wall Table R BUILDING ENVELOPE
61 Air Leakage Mandatory Requirements HVAC Register Boots Table R BUILDING ENVELOPE
62 Mandatory Air Leakage Requirements Fireplace Dampers R BUILDING ENVELOPE
63 Air Leakage Mandatory Requirements Accounting for Combustion Appliances R BUILDING ENVELOPE
64 Mandatory Air Leakage Requirements Common Walls NYS Supplement R BUILDING ENVELOPE
65 NYS Supplement R and R Multifamily Air Leakage Testing Options Standard Measurement All Detached Houses 3 ACH 50 Buildings with 2 or more Dwelling Units Attached 0.3CFM50/Sq Ft Buildings with More than 7 Units Attached 0.3 CFM50/Sq Ft Enclosure Surface Area Volume Enclosure Surface Area First 7 Units then 1/7 BUILDING ENVELOPE
66 Air Sealing Best Practices Table R Have a Plan Table R Scopes of Work Identify air barrier and include on plans If the builder doesn t know where the air barrier is, they won t meet 3ACH50 Seal all areas required by code Look for other problem spots, technology Solutions Decide who is responsible Onsite quality control BUILDING ENVELOPE
67 MECHANICAL SYSTEMS AND HOT WATER Duct Installation and Testing Equipment Sizing Mechanical Ventilation and Controls Hot Water
68 Duct Requirements and Flexibility Duct Testing R Post construction Test Rough in Test MECHANICAL
69 Duct Requirements and Flexibility Duct Leakage R NYSERDA ENERGY CODE TRAINING Duct Testing Mandatory Not Applicable Prescriptive Target 4 CFM 25 Not Applicable Ducts in Conditioned Space Exempt MECHANICAL
70 Duct Requirements and Flexibility Duct Insulation R Location Unconditioned Attic Other Unconditioned Space Conditioned Space Size 3 + <3 3 + <3 Any Insulation R8 R6 R6 R4.2 NA MECHANICAL
71 Exemptions for Ducts Inside Building Thermal Envelope R and R MECHANICAL
72 Mandatory Duct Requirements Building Cavities Prohibited as Ducts or Plenums R No More Panned Returns! MECHANICAL
73 T R S O P RE W U E T N N E V Mandatory Duct Requirements Building Cavities Prohibited as Ducts or Plenums R MECHANICAL
74 Mandatory Duct Requirements Building Cavities Prohibited as Ducts or Plenums R Newport Ventures MECHANICAL
75 Mandatory Duct Requirements Sealing Ducts/Air Handlers/Filter Boxes R MECHANICAL
76 Duct Concepts Installation MECHANICAL
77 Duct Concepts Installation NYSERDA ENERGY CODE CONCEPTS MECHANICAL
78 MECHANICAL SYSTEMS AND HOT WATER Duct Installation and Testing Equipment Sizing Mechanical Ventilation and Controls Hot Water
79 Mandatory HVAC Requirements (See Workbook, page 13) Equipment Sizing and Efficiency Rating R403.7 ACCA Manual J Calculates Heating and Cooling Load of Home ACCA Manual S Matches Appropriate Size of Equipment for Load MECHANICAL
80 Mandatory HVAC Requirements Equipment Sizing and Efficiency Rating R403.7 Consequences of Oversized Equipment Short Cycling Reduced Equipment Life Increased First Cost for Equipment Consequences of Undersized Equipment Equipment Struggles to Maintain Setpoints Reduced Equipment Life Comfort Complaints Moisture & Humidity Concerns Backup Heat MECHANICAL
81 Mandatory HVAC Requirements Equipment Sizing and Efficiency Rating R403.7 MECHANICAL
82 Mandatory HVAC Requirements Equipment Sizing and Efficiency Rating R403.7 MECHANICAL
83 MECHANICAL SYSTEMS AND HOT WATER Duct Installation and Testing Equipment Sizing Mechanical Ventilation and Controls Hot Water
84 Mandatory HVAC Requirements Mechanical Ventilation R403.6 All Homes 5ACH50 or Tighter Must Have Whole House Mechanical Ventilation Per IRC All New Homes in NYS Must Be 3ACH50 or Tighter All New Homes in NYS Must Include Whole House Mechanical Ventilation MECHANICAL
85 Mandatory HVAC Requirements Exhaust Ventilation Option Exhaust Only Inexpensive Easy to Design and Install Correctly Still Pulls Fresh Air Through Infiltration MECHANICAL
86 Mandatory HVAC Requirements Supply Ventilation Option Supply Only Inexpensive Easy to Design and Install Correctly Still Pushes Old Air Out Through Building Envelope MECHANICAL
87 Mandatory HVAC Requirements Semi Balanced Ventilation Option Semi Balanced More Expensive Harder to Design and Install Correctly Controls both Exhaust and Supply MECHANICAL
88 Mandatory HVAC Requirements Exhaust Ventilation Option Balanced Heat Recovery Ventilator or Energy Recovery Ventilator Most Expensive Hardest to Design and Install Efficient Option that Controls both Exhaust and Supply MECHANICAL
89 2015 IRC M Kitchen Makeup Air >400 CFM Makeup Air Required Gravity or Electric Damper Same Room or Duct Systems to Room MECHANICAL
90 Mandatory HVAC Requirements Controls R403.1, R403.9 R Thermostat R403.1 Programmable Preset Pool/Spa Heaters R403.1 R On/off switch Timer Vapor Retardant Cover Snow/Ice Melt Systems R403.9 Automatic Shutoffs Based on Temperature MECHANICAL
91 Mandatory HVAC Requirements Mechanical Piping Insulation R403.4 Mechanical System Piping Required for pipe hotter than 105 F or cooler than 55 F R 3 Piping Insulation Mandatory MECHANICAL
92 MECHANICAL SYSTEMS AND HOT WATER Duct Installation and Testing Equipment Sizing Mechanical Ventilation and Controls Hot Water
93 Hot Water Requirements Pipe Insulation R R 3 Insulation Required If: Pipe is larger than ¾ diameter Pipe to more than one dwelling unit Pipe outside conditioned space Pipe from the water heater to distribution manifold Pipe located under floor slab Buried pipe MECHANICAL
94 Mandatory Hot Water Requirements Service Hot Water Systems R R Hot Water Recirculation System Not Mandatory If Installed, Controls Mandatory Demand Control Only Heat Trace System Not Mandatory If Installed, Controls Mandatory Temperature Shutoff MECHANICAL
95 LIGHTING Mandatory Requirements High Efficacy Lighting LED Demonstration Study
96 Mandatory Lighting Requirements R404 Mandatory 75% High Efficacy Efficient Lamps (Bulbs) Efficient Fixtures LIGHTING
97 Efficacy Requirements Lumens Lumens measure how much light you are getting from a bulb. Efficacy More lumens = brighter light Measures efficiency Higher number = more efficient Efficacy Requirements Lamp Wattage Efficacy >40 Watts 60 Lumens/Watt Watts 50 Lumens/Watt <15 Watts 40 Lumens/Watt LIGHTING
98 High Efficacy Lighting CFLs LEDs Linear Fluorescents Incandescent Halogens LIGHTING
99 High Efficacy Lighting Comparing Lighting Options Incandescent Halogen CFL LED Lumens (Brightness) Efficacy (Lumens/Watt) Lumens Measures efficiency Higher number = more efficient Watts Efficacy (Lumens/Watt) Life Expectancy Does not meet high efficacy requirements ,000 Hours 1,000 3,000 Hours 10,000 Hours 50,000 Hours LIGHTING
100 COMPLIANCE OPTIONS Simulated Performance Alternative R405 (Performance) Energy Rating Index Compliance Alternative R406 Compliance Documentation
101 Mandatory Requirements Certificate R401.3 Air Barrier R402.4 Air Tightness Test and Target R Duct Sealing & Location R R Duct Testing R Mechanical Pipe Insulation R403.4 Efficient Lighting R404 Some Controls R403.1 Some Controls R R R Maximum Window U & SGHC R402.5 Mechanical Ventilation R403.6 Manual J & Manual S R403.7 COMPLIANCE
102 Simulated Performance Alternative Flexibility R405 Prescriptive Requirements Mandatory Requirements COMPLIANCE
103 Simulated Performance Alternative Limits R405 Duct Insulation HVAC Hot Water Thermostat COMPLIANCE
104 Software R405.4, R101.5, R (See workbook, page 14) DOE Software (REScheck) Other Software Approved by NY Secretary of State Likely REM/Rate and REM/Design COMPLIANCE
105 Examples and Benefits of R405 Some Flexibility Several Windows Missing NFRC Sticker Forced to Use Defaults Builder Wants to Avoid Pipe Insulation on ¾ Pipes Energy Cost Must be Equal Adds Additional Attic Insulation Uses 100% efficient Lighting COMPLIANCE
106 COMPLIANCE DETAILS AND OPTIONS Simulated Performance Alternative R405 (Performance) Energy Rating Index Compliance Alternative R406 Compliance Documentation
107 Energy Rating Index R406 Whole House Energy Scale 0 = Net Zero Energy Home Based on HERS Index 100 = 2006 IECC Prescriptive Home Each Point Represents 1% Energy Reduction Relative to 100 COMPLIANCE
108 Energy Rating Index R406 COMPLIANCE
109 Maximum Energy Rating Index by Climate Zone Table Climate Zone ERI % Better than 2006 IECC % % % Much More Stringent Efficiency Target than Existing Compliance Paths COMPLIANCE
110 ERI Minimums 2009 IECC Insulation & Windows Climate Zone Fenestration U Factor Sky Light U Factor Glazed Fenestration SHGC Ceiling R Value Wood Frame Wall R Value Mass Wall R Value Floor R Value Basement Wall R Value 20 or /13 5/ / NR NR or or or Slab R Value & Depth 10, 2 ft Crawl Space Wall R Value 10/13 10, 13/ /19 10/13 15/19 10/13 2 ft 15/19 15/ /19 10, 4 ft 15/19 10/13 COMPLIANCE
111 COMPLIANCE DETAILS AND OPTIONS Simulated Performance Alternative R405 (Performance) Energy Rating Index Compliance Alternative R406 Compliance Documentation
112 Compliance Documentation by Compliance Path Prescriptive Energy Details on Construction Documents Material Documentation Calculation for Prescriptive Tradeoffs (if applicable) Performance (Section R405) Energy Details on Construction Documents Material Documentation Permit Compliance Report C of O Compliance Report Energy Rating Index (Section R406 Energy Details on Construction Documents Material Documentation Permit Compliance Report C of O Compliance Report COMPLIANCE
113 Common Compliance Issues Envelope Air Leakage 3 ACH50 Air Sealing Details Missing Duct Leakage 4CFM25 Not Sealing all Seams Insulation Wall Insulation Poor Installation R Value Options Townhome Common Wall Ceiling Poor Installation Slab Insulation Location Lighting Missing High Efficacy Lamps CONCLUSIONS
114 Resources Free online Energy Code Training Building Techniques for Code Compliance Energy Code Hotline Call (518) or e mail codecoach@newportventures.net Free Plan Review and Inspection Services Call or e mail planreview@tylin.com Building America Solution Center CONCLUSIONS
115 Look for more Energy Code training coming soon Jay Street, Schenectady, NY Thank You!
116 NYSERDA Sponsored Training In addition to training on the Energy Code, code officials, architects, planners, engineers, inspectors and others can access NYSERDA sponsored training for technologies that include photovoltaics (solar electricity), solar heating and biomass. Many of the trainings provide continuing education units from AIA, BPI, IAEI and others. For more information, visit the links below. Both the solar heating and biomass courses also are offered online and can earn CEUs. For the NY Sun PV Trainers Network (training for PV): sun.ny.gov/for Local Government/Local Government Training For solar heating inspection: solar heating systems new york state/ For biomass: a Contractor/Renewable Heat NY Contractors CONCLUSIONS
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