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

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

2 Understanding the Energy Code

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 Fundamentals of Building Science 1 st Law of Thermodynamics Energy is neither created nor destroyed However: Energy moves from place to place Energy can change forms When energy changes form, the total amount of energy does not change

5 Fundamentals of Building Science 2 nd Law of Thermodynamics Energy flows naturally from high concentrations to low concentrations For Example: Heat Transfer: Heat moves to cold Moisture Transfer: Wet moves to dry Air Movement: High air pressure moves to low air pressure

6 Fundamentals of Building Science Heat Transfer Conduction Transfer of heat between objects that are in contact o Conduction requires a solid, liquid, or gas medium o Energy is transferred directly from one molecule to the next when they come into contact o What are some examples of conduction?

7 Fundamentals of Building Science Heat Transfer Convection Transfer of heat by circulation or movement of the heated parts of a liquid or a gas o Requires a fluid medium (gas or liquid) o Caused by density differences between warmer and cooler parts of a fluid medium warm air rises, while denser, cooler air falls

8 Fundamentals of Building Science Heat Transfer Radiation Transfers heat from a warm object to a cooler object when they are not in contact o Unlike convection or conduction, radiation does not require a medium to carry the heat o The objects must be in Line of Sight to one another

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12 Energy Efficient Durable Comfortable Affordable ENERGY CODE & BEYOND

13 Air Barrier and Insulation Installation Table R

14 Complete Table 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

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

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

17 Air Barrier and Thermal Barrier A continuous air barrier shall be installed in the building envelope. Exterior thermal envelope contains a continuous air barrier.

18 Air Barrier and Thermal Barrier A continuous air barrier shall be installed in the building envelope. Exterior thermal envelope contains a continuous air barrier.

19 Air Barrier and Thermal Barrier Breaks or joints in the air barrier shall be sealed.

20 Air Barrier and Thermal Barrier Air-permeable insulation shall not used as a sealing material.

21 Ceiling/Attic The air barrier in any dropped ceiling/soffit shall be aligned with insulation and any gaps in the air barrier sealed.

22 Ceiling/Attic Access openings, drop downstairs or knee wall doors to unconditioned attic spaces shall be sealed.

23 Corners and headers shall be insulated and sealed Walls

24 Walls The junction of the foundation and sill plate shall be sealed.

25 The junction of the top plate and top of the exterior walls shall be sealed. Walls VA

26 Walls Exterior thermal envelope insulation for framed walls shall be installed in substantial contact and continuous alignment with the air barrier.

27 Walls Knee walls shall be sealed

28 Windows, Skylights and Doors Space between window/door jambs and framing and skylights and framing shall be sealed.

29 Rim Joists Rim joists shall be insulated and include an air barrier.

30 Rim Joists Rim joists shall be insulated and include an air barrier.

31 Floors Including above-garage and cantilevered floors Insulation shall be installed to maintain permanent contact with underside of subfloor decking.

32 The air barrier shall be installed at any exposed edge of insulation Floors Includes above-garage and cantilevered floors

33 Crawlspace Walls Where provided in lieu of floor insulation, insulation shall be permanently attached to the crawlspace walls.

34 Crawlspace Walls Exposed earth in unvented crawl space shall be covered with Class 1 vapor retarder with overlapping joints taped.

35 Shafts, Penetrations Duct shafts, utility penetrations, and flue shafts opening to exterior or unconditioned space shall be sealed.

36 Shafts, Penetrations

37 Narrow cavities Batts in narrow cavities are cut to fit, or narrow cavities are filled by filled by insulation that on installation readily conforms to the available cavity space.

38 Garage Separation Air Sealing shall be provided between the garage and conditioned spaces.

39 Recessed Lighting Recessed light fixtures installed in the building thermal envelope shall be air tight, IC rated, and sealed to the drywall. Exception fixtures in conditioned spaces

40 Plumbing and wiring 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.

41 Shower/tub on exterior wall Exterior walls adjacent to showers and tubs shall be insulated and the air barrier installed separating them from the showers and tubs.

42 Electrical/phone box on exterior walls The air barrier shall be installed electrical or communication boxes or air sealed boxes shall be installed.

43 HVAC register boots HVAC register boots that penetrate building envelope are sealed to subfloor or drywall.

44 Fireplace An air barrier shall be installed on fireplace walls. Fireplace shall have gasketed doors.

45 Energy Efficient Durable Comfortable Affordable ENERGY CODE & BEYOND

46 Thank You Any Questions? Stephen Carr Regional Building Science Manager (386)