Presented by: Stephen Carr Regional Building Science Manager (386)

Size: px

Start display at page:

Download "Presented by: Stephen Carr Regional Building Science Manager (386)"

Neal Martin
5 years ago
Views:

1 Presented by: Stephen Carr Regional Building Science Manager (386)

2 Understanding the Energy Code

2015 IECC CZ 1 CZ 2 CZ 3 CZ 4 CZ 5 CZ 6 CZ 7&8 Ceiling 30 38 38 49 49 49 49 Wall 13 13 20 or 13+5h 20

3 2015 IECC CZ 1 CZ 2 CZ 3 CZ 4 CZ 5 CZ 6 CZ 7&8 Ceiling Wall or 13+5h 20 or 13+5h 20 or 13+5h 20 or 13+10h 20 or 13+5h Window NR ACH

4 Option 1: Prescriptive Option 2: Performance

5 Option 1: Prescriptive Prescriptive Components NO TRADE-OFF Table R Insulation and Fenestration Requirements by Component CLIMATE ZONE FENESTR ATION U- FACTOR b SKYLIGHT b U-FACTOR GLAZED FENESTRA TION SHGC b, e CEILING R-VALUE WOOD FRAME WALL R-VALUE MASS WALL R-VALUE i FLOOR R-VALUE BASEMENT c WALL R-VALUE SLAB d R-VALUE & DEPTH CRAWL SPACE c WALL R-VALUE 4 except Marine or 13+5 h 8/ /13 10, 2ft 10/13 5 and Marine NR or 13+5 h 13/17 30 g 15/19 10, 2ft 15/ NR 49 7 & NR or h 15/20 30 g 15/19 10, 4ft 15/ or h 19/21 38 g 15/19 10, 4ft 15/19

6 Option 1: Prescriptive U-Value NO TRADE-OFF Table R Equivalent U-Factors CLIMATE ZONE FENESTRA TION U-FACTOR SKYLIGHT U-FACTOR CEILING U-FACTOR FRAME WALL U-FACTOR MASS WALL U-FACTOR b FLOOR U-FACTOR BASEMENT WALL U-FACTOR CRAWL SPACE WALL U-FACTOR 4 except Marine 5 and Marine &

7 Option 1: Prescriptive UA Alternative Must submit compliance documentation. VERY LITTLE TRADE-OFF RESCHECK Provides UA Calculation Only Allows minor Trade-off s REMRATE Used by HERS Raters (Third Party) UA Compliance one of many reports

8 Option 1: Prescriptive UA Alternative Must submit compliance documentation.

9 Complete Table R Air Barrier and Insulation Installation General Requirements Ceiling/attic COMPONENT Air Barrier and Insulation Installation Table CRITERIA X X X X A continuous air barrier shall be installed in the building envelope. X X X X Exterior thermal envelope contains a continuous air barrier. X X X X X X Breaks or joints in the air barrier shall be sealed. X X Air-permeable insulation shall not be used as a sealing material. The air barrier in any dropped ceiling/soffit shall be aligned with the insulation and any gaps in the air barrier sealed. X X X Access openings, drop down stair or knee wall doors to unconditioned attic spaces shall be sealed. X X B U I L D E R F R A M E R E L E C T R C I A N P L H U V M A B C E R I N D S R U Y L W A A T L I L O N The insulation in any dropped ceiling/soffit shall be aligned with the air barrier. X X X X The junction of the foundation and sill plate shall be sealed. The junction of the top plate and top of exterior walls shall be sealed. Knee walls shall be sealed. X X X X X X X X X Walls Cavities within corners and headers of framed walls shall be insulated by completely filling the cavity with a material having thermal resistance of R-3 per inch minimum. X X X Exterior thermal envelope insulation for framed walls shall be installed in substantial contact and continuous alignment with the air barrier. X X X Windows, skylights and doors The space between window/door jambs and framing and skylights and framing shall be sealed. X X Rim joists Rim joists shall be insulated and include the air barrier. The air barrier shall be installed at any exposed edge of insulation. X X X X X X Insulation shall be installed to maintain permanent contact with underside of subfloor decking or Floors (including above-garage and cantilevered floors) floor framing cavity insulation shall be permitted to be in contact with top side of sheathing, or continuous insulation installed on the underside of floor framing and extends from the bottom to the top of all perimeter floor framing members. X Exposed earth in unvented crawl spaces shall be covered with a Class I vapor retarder with overlapping joints taped. X X Crawl space walls Shafts, penetrations Where provided instead of floor insulation, insulation shall be permanently attached to the crawlspace walls. Duct shafts, utility penetrations, and flue shafts opening to exterior or unconditioned space shall be sealed. X X X X X X Narrow cavities Batts in narrow cavities shall be cut to fit, or narrow cavities shall be filled by insulation that on installation readily conforms to the available cavity space. X X Garage separation Recessed lighting Plumbing and wiring Air sealing shall be provided between the garage and conditioned spaces. X Recessed light fixtures installed in the building thermal envelope shall be sealed to the drywall, air tight and IC rated. X X Batt insulation shall be cut neatly to fit around wiring and plumbing in exterior walls, or insulation that on installation readily conforms to available space shall extend behind piping and wiring. X X Shower/tub on exterior wall Electrical/phone box on exterior walls The air barrier installed at exterior walls adjacent to showers and tubs shall separate them from the shower and tubs. X X Exterior walls adjacent to showers and tubs shall be insulated. The air barrier shall be installed behind electrical or communication boxes or air sealed boxes shall be installed. X X X X X X HVAC register boots Concealed sprinklers HVAC register boots that penetrate building thermal envelope shall be sealed to the subfloor or drywall. When required to be sealed, concealed fire sprinklers shall only be sealed in a manner that is recommended by the manufacturer. Caulking or other adhesive sealants shall not be used to fill voids between fire sprinkler cover plates and walls or ceilings. X X X

10 Complete Table Air Barrier and Insulation Installation Where required by the building official o Approved Third Party Inspect all Components Verify Compliance ORANGUTAN APPROVED

11 Blower Door Test R Testing Mandatory Approved Third Party Written Report

12 Duct Testing R Sealing is Mandatory 1. Rough-in 4 CFM per 100 SF of CFA Air Handler Not Installed o 3 CFM per 100 SF of CFA 2. Post Construction 4CFM per 100 SF of CFA Exception: Ducts inside thermal envelope

13 Sealing (Mandatory) R Use Mastic!

14 Sealing (Mandatory) R Boots need to be sealed to drywall

15 Sealing (Mandatory) R Boots need to be sealed to floor decking

16 Sealing (Mandatory) R Zip ties alone won t cut it! Use Mastic!

17 Option 1: Prescriptive MEETS OR EXCEEDS 2015 IECC

18 Option 2: Performance Performance Option 405: Performance-based compliance. Compliance based on simulated energy performance requires that a proposed residence (proposed design) be shown to have an annual energy cost that is less than or equal to the annual energy cost of the standard reference design. Energy prices shall be taken from a source approved by the code official, such as the Department of Energy, Energy Information Administration's State Energy Price and Expenditure Report. Code officials shall be permitted to require time-of-use pricing in energy cost calculations. Plans Review Prior to breaking ground All info. provided to HERS Rater Mid Inspections Framing Air Sealing Insulation Duct Test (Rough-In) Optional Final Inspection Blower Door Testing Option Duct Leakage Testing

19 Blower Door Test R Testing Mandatory Approved Third Party Written Report

20 Duct Testing R Sealing is Mandatory 1. Rough-in 4 CFM per 100 SF of CFA Air Handler Not Installed o 3 CFM per 100 SF of CFA 2. Post Construction 4CFM per 100 SF of CFA Exception: Ducts inside thermal envelope

21 Option 2: Performance MEETS OR EXCEEDS 2015 IECC

22 Option 3: Energy Rating Index (ERI) Compliance Alternative R406.3: The ERI shall be a numerical integer value that is based on a linear constructed such that the ERI reference design has an Index of 100 and a residential building that uses no net purchased energy has an Index value of 0. Each integer value on the scale shall represent a 1-percent change in the total energy use of the rated design relative to the total energy use of the ERI reference design. The ERI shall consider all energy used in the residential building. Plans Review Prior to breaking ground All info. provided to HERS Rater Mid Inspections Framing Air Sealing Insulation Duct Test (Rough-In) Optional Final Inspection TABLE R406.4: Climate Zone 4: Max. ERI = 54 Climate Zone 5: Max. ERI = 55 Climate Zone 6: Max. ERI = 54 Climate Zone 7: Max. ERI = 53 Climate Zone 8: Max. ERI = 53 Blower Door Testing Option Duct Leakage Testing

23 Blower Door Test R Testing Mandatory Approved Third Party Written Report

Duct Testing R403.3.3 Sealing is Mandatory 1.

24 Duct Testing R Sealing is Mandatory 1. Rough-in 4 CFM per 100 SF of CFA Air Handler Not Installed o 3 CFM per 100 SF of CFA 2. Post Construction 4CFM per 100 SF of CFA Exception: Ducts inside thermal envelope

25 Option 3: ERI Compliance Alternative MEETS OR EXCEEDS 2015 IECC