www.emubuildingscience.com IECC 2015 BUILDING ENERGY CODE: The - - PowerPoint PPT Presentation

▶

Dec 29, 2022 288 likes •665 views

We provide specialized building supplies, expert guidance, and advanced education to architects, contractors, building owners, and construction industry professionals. Our sophisticated knowledge base and innovative product line promote quality

SLIDE 1

We provide specialized building supplies, expert guidance, and advanced education to architects, contractors, building owners, and construction industry professionals. Our sophisticated knowledge base and innovative product line promote quality green building methods, energy efficiency, comfort and health.

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Dan Berteletti -- dan@emubuildingscience.com Jackie Burnett -- jackie@emubuildingscience.com

SLIDE 2

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

IECC 2015 BUILDING ENERGY CODE:

“The intent is to advance the trades with the latest and best practice of building science and reduce the overall impact of the building sector on the environment.”

SLIDE 3

Conditioned Space

attic

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

IECC 2015 BUILDING ENERGY CODE: FOCUS IS ON BUILDING ENVELOPE

crawl space

SLIDE 4

4 This is a fish… in a state of comfort… at home in his fish bowl.

THE IMPORTANCE OF THE BUILDING ENVELOPE

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 5

5 Let’s draw an analogy…

Your House You

THE IMPORTANCE OF THE BUILDING ENVELOPE

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 6

THE IMPORTANCE OF THE BUILDING ENVELOPE

To keep our fish friend comfortable, we add water as needed. In a similar fashion, you add energy to your house to keep comfortable. Some of the water (or energy) is clean… Some is less clean…

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 7

THE IMPORTANCE OF THE BUILDING ENVELOPE

Things become more serious, however, when there is a crack in the fish bowl. To keep our fish friend comfortable, we need to add more and more water.

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 8

Until eventually we are spending a lot of money simply trying to maintain a decent level of comfort.

THE IMPORTANCE OF THE BUILDING ENVELOPE

All because the fish bowl has a crack.

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 9

What’s the solution? Sometimes the most economic solution is fixing the crack.

ttobre 2014

THE IMPORTANCE OF THE BUILDING ENVELOPE

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 10

ttobre 2014

THE IMPORTANCE OF THE BUILDING ENVELOPE

What’s the solution? Sometimes the most economic solution is fixing the crack. Other times, it makes sense to buy a newer, thicker, and more resistant bowl.

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 11

Either way, to avoid having to add lots of water in the future, it’s smarter to invest in the fish bowl… not the water tap.

ttobre 2014

THE IMPORTANCE OF THE BUILDING ENVELOPE

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 12

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

HOW CAN OUR FISH FRIEND HELP US TO RETHINK THE IMPORTANCE OF OUR BUILDING ENVELOPE?

SLIDE 13

Structure:

 Walls  Windows/Doors  Roof/Ceilings  Floors  Foundation

Variables:

 Thermal insulation  Moisture diffusion  Air infiltration  Solar heat gain

Conditioned Space

attic

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

crawl space

WHAT MAKES UP YOUR BUILDING ENVELOPE?

SLIDE 14

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Conditioned Space

attic crawl space

Durability – Safety – Health – Comfort Protection against – Weather – Fire – Insects, Rodents, Bigger Animals – IAQ, Odors, Noise WHAT ARE THE BENEFITS OF YOUR BUILDING ENVELOPE?

SLIDE 15

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Conditioned Space

attic crawl space

Durability – Safety – Health – Comfort WHAT ARE THE BENEFITS OF YOUR BUILDING ENVELOPE? As we build tighter, control of air infiltration and moisture management becomes critical.

SLIDE 16

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

 Let the building code guide us:  A continuous air barrier shall be installed in the building envelope.  The exterior thermal envelope contains a continuous air barrier.  Breaks or joints in the air barrier shall be sealed. HOW DO WE ACHIEVE A ROBUST BUILDING ENVELOPE?

SLIDE 17

Any durable, solid material that blocks air flow between conditioned space and unconditioned space, including necessary sealing to block excessive air flow at edges and seams.

Air Barrier - Definition

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 18

Any durable, solid material that blocks air flow between conditioned space and unconditioned space, including necessary sealing to block excessive air flow at edges and seams.

Air Barrier - Definition

 Ensures low air infiltration rates  Controls air leakage through the building envelope  Controls ventilation for fresh air

>ACH

 Controls conductive heat transfer through exterior walls

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 19

 Building Sheet Wraps  Dupont Tyvek  SIGA: Majvest & Majcoat  ProClima: Intello & Solitex  Grace Vycor & Ice and Water Shield  Rubber membranes  Polyethylene film  Typar  Tar/Building Paper  Plywood, OSB, ZIPs w/Taped Seams  Self-Adhered Sheet Membranes  Liquid Applied Membranes  Spray Foam

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Air Barrier Types

SLIDE 20

Floor Window Attic Hatch Foundation Chimney Plumbing Wiring Exterior Door Lights Ceiling Penetrations

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Air Barrier - Sealing

SLIDE 21

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

 Let the building code guide us:  Exterior thermal envelope insulation for framed walls shall be installed in substantial contact and continuous alignment with the air barrier HOW DO WE ACHIEVE A ROBUST BUILDING ENVELOPE?

SLIDE 22

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

 Let the building code guide us: HOW DO WE ACHIEVE A ROBUST BUILDING ENVELOPE?

SLIDE 23

Fibrous Insulation  Fiberglass Batt  Mineral Wool  Slag Wool  Cellulose (dense-packed)

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Insulation Types – Interior and Exterior

Foam Plastic Insulation:  Polyisocyanate  Spray Polyurethane foam  Expanded polystyrene (EPS)  Extruded Polystyrene (XPS)

SLIDE 24

Building Energy Code - Envelope

Points of Focus:  Air Sealing: Management of liquid water (rain and ground water), airflow, water vapor flow, and heat flow.  Insulation: Prevent your sheathing from getting cold enough for “condensation” (moisture accumulation) to be a problem.  Quality Control during installation  Durability: Winds load, Seismic Movement, Thermal Expansion Frost/Thaw Goals:  Vapor Open / Vapor Closed Wall assembly.  Remove dew point from within wall cavity.  Air Sealed sufficiently to meet Blower Door Test.  Predictable, long lasting results. Risk management plan.

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 25

Overall R-Value:  Reduce heat losses in Walls, Roofs, and Floors R-Value is not enough: Exterior Insulation  Eliminate thermal bridging  Keep wall sheathing warm

The thermal performance of a wall is greatly

improved when wall sheathing is protected by an exterior layer of insulation.

Reduce condensation risk

Exterior wall insulation keeps wood warm, keeps wood dry, reduces the condensation potential, reduces thermal bridging, and probably increases the durability of the wall. Ratio of Exterior to Interior Insulation is Critical

Insulation – Interior and Exterior

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

SLIDE 26

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

HOW DOES BUILDING CODE INTEGRATE INTO BUILDING ENVELOPE DESIGN?

Vapor Open Vapor Closed

SLIDE 27

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Wall Assembly - Components

INSIDE OUTSIDE

INSIDE Drywall Vapor Control Layer Cavity Insulation Framing/Structure Exterior Sheathing Exterior Insulation Air Barrier Control Water Control Siding OUTSIDE

SLIDE 28

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Wall Assembly - Vapor Open

INSIDE OUTSIDE

SLIDE 29

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com

Wall Assembly - Vapor Closed

SLIDE 30

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, does NOT pass test

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

SLIDE 31

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, passes test

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

SLIDE 32

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, passes test

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

SLIDE 33

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, passes test

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

SLIDE 34

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, does NOT pass test

OUTSIDE INSIDE

Siga Majvest XPS rigid insulation R-15 7/16” OSB 2x6 with dense packed cellulose (R-20) drywall

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

XPS rigid insulation 2.0” (R-10)

SLIDE 35

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, passes test

OUTSIDE INSIDE

Siga Majvest XPS rigid insulation 2.0” (R-10) 7/16” OSB 2x6 with dense packed cellulose (R-20) drywall Siga Majpell

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

SLIDE 36

March 2016 - presentation by Emu Building Science - Boulder, CO

www.emubuildingscience.com WALL ASSEMBLY climate zone 7 - meets code, passes test

OUTSIDE INSIDE

Siga Majvest Mineral Wool Ins. 2.38” (R-10) 7/16” OSB Mineral Wool batt R-23 drywall Siga Majpell

Saturation Vapor Pressure Internal-External Vapor Pressure w/Condensation

SLIDE 37

March 2016 - presentation by Emu Building Science - Boulder, CO