Demystifying Green Residential Certification Options & Codes€¦ · Recall key provisions of the...

Demystifying Green Residential Certification Options & Codes

Founded 2000501(c)3 non‐profit; mission:

To be a catalyst for market transformation of the built environment through education, third‐party verification, and partnership.

www.AllianceES.org

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Who Am I?

• Brett Little, Living Future Accredited, LEED APH & GreenStarProfessional

• Bachelors in sustainable business

• USGBCWM Board Member

• Brand new father!

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• This courses serves as part 1 of

• GreenStar Remodeling Qualification Course.

• Understanding / Implementing LEED for Homes Course

• High Performance HVAC Contractor

Foundation of AES Education 2014

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Who are you?

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Recall key provisions of the International Energy Codes (IECC) 2009, 2012 & 2015.

Compare code requirements to above-code green building programs

Utilize the appropriate tools and resources to add third-party certification on your next project

Identify economic value proposition for green building & remodeling

Program Objectives

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Recall key provisions of the Michigan energy code MUEC 2009 and discuss where future code changes may take us

Compare code requirements to above-code green building programs

Utilize the appropriate tools and resources to add third-party certification on your next project

Identify economic value proposition for green building & remodeling

Program Objectives (Michigan)

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Until the 2006 IECC, energy code performance increases only amounted to 1 to 2 % increases per year

The 2009 IECC is roughly 15% increase over 2006 IECC

The 2012 IECC is about a 30% increase over 2006 IECC

Overview of Energy Code

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• Modeled after the 2009 International Energy Conservation Code (IECC)

• Projects MUST comply with Mandatory Provisions, and either one of the following two:

1. Prescriptive Provisions

2. Performance Provisions

Michigan Uniform Energy Code2009 EDITION

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• Building Thermal Envelope– Air leakage can be verified by:

• Actual testing (7 ACH50 or less)• Visual inspection of items listed in table 402.4.2

– An example would be sealing between window/door jambs and framing

– Programmable thermostats– Duct sealing– Minimum of R-3 on mechanical system piping– R-2 on circulating service hot water piping– Outdoor air intakes/exhausts shall be dampered

Michigan Uniform Energy Code2009 MANDATORY REQUIREMENTS (Key Ones)

Prescriptive Method (section R402) Table R402.1.1(2009)

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Proposed residence is to have an Annual Energy Cost that is less than or equal to the Annual Energy Cost of the Standard Reference Design

The Performance Method can be evaluated with appropriate software that the Building Code Official is permitted to approve

Performance Method (section 405)(2009 )

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• The 2012 code requires: – More insulation– A tighter Thermal Envelope/Air Sealing– Tighter Ducts– Better Performing Windows– More efficient Lighting– Mechanical Ventilation

What’s Changed Since IECC 2009?

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• All Joints, Seams and Penetrations• All Utility penetrations are sealed• Knee Walls are sealed• Attic access openings are sealed• Rim Joists Junctions are sealed• All openings between window and door assemblies

and their respective jambs and framing are sealed• Behind tubs and showers on exterior walls are

sealed• In Other Words – ALL Sources of Air Infiltration

Air Sealing!

Air Infiltration

Blower Door

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Prescriptive VS Performance

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“15/19” means R-15 continuous insulated sheathing on the interior or exterior of the home or R-19 cavity insulation at the interior of the basement wall.

Prescriptive

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Climate Zone 5 – R-49 (up from R-38)

Ceiling R-Value

Fiberglass = 15” (R 3.2 per inch)

Cellulose = 14” (R 3.5 per inch)

Open cell spray foam = 13.5”(R 3.6 per inch)

Closed cell spray foam = 7.5”(R 6.5 per inch)

Prescriptive

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• Must meet all Mandatory requirements • Requires that a proposed residence design be

shown to have an annual energy cost that is less or equal to the standard reference design

• The code official shall be permitted to approve tools for a specific application or limited scope

Performance Method - Section R405

Performance

• Duct tightness is more stringent in 2012• (Testing is required only if ducts are

NOT entirely inside conditioned space)• Test in one of 3 ways:

– Rough in without air handler - 3cfm per 100 sq ft (old 4 cfm)– Rough in with air handler – 4 cfm (old 6 cfm)– “Post Construction” 4cfm (old 12 cfm)

HVAC Duct Leakage Testing

Performance

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Properly sized HVAC

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• Is bigger better???• The most common mistake in sizing a

Heating/Cooling system is “oversizing”• This not only makes the system:

– More expensive to install– But forces it to operate inefficiently– Breakdown more often– & Cost more to operate

• The days of holding the thumb up and WAG-ing are gone.

How to use Manual J

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• Ventilation rate based on SFand number of bedrooms

• Exhaust-only system

• Balanced system– Continuous or– Intermittent

Mechanical Ventilation aka“Build Tight, Ventilate Right”

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Ceiling insulation changed R-49 from R-38Better performing, more efficient windowsIncreased strictness on HVAC duct leakage75% of fixtures must be high-efficacy lampsHot water pipe insulation (R-3)Every new home will need to pass a blower

door test to 5.0 ACH@50 or lessMechanical ventilation required for tight homesManual J, D, S sizing for HVAC

IECC 2012 vs IECC 2009 Summary

Cost Impact: 2012 IECC Prescriptive path Upgrade cost from 2009 IECC

.32 U-Factor Windows $268.00 (1.00sq ft glass)R-49 Ceilings $355.00 (.0032per R/Sq ft)R-20 or R13 cavity + R-5 Insulated Sheathing $0.00 (Same as 2009 IECC)

R-15 Continuous or R-19 Cavity Basement wall $227.00 (.10 sq ft )

R-15 Continuous or R-19 Cavity Crawl space wall $139.00 (.10 sq ft)

Checklist 402.4.1.1 Compliance (Air Barriers ect.) $380.00 (est. Matl & Labor)

Infiltration and Air sealing Upgrades $350.00 (est. Matl & Labor)

Infiltration Testing (Blower door test) $300.00 (General testing)

Duct Sealing (all ducts, penetrations, seams) $225.00 (est. Matl & Labor)

Duct Testing (if any portion breaches the envelope) $150.00 (General Testing)

Mechanical Ventilation to Meet ASHRAE 62.2 $225.00 (est. Matl & Labor)

75% CFL or High efficacy bulbs in Permanent fixtures $25.00 (est. Matl & Labor)

All return cavities fully ducted $275.00 (est. Matl & Labor)

Insulated Hot Water Lines (min R-2) $350.00 (est. Matl & Labor)

Total Upgrade Cost: $3,269.00

Cost Impact: 2012 IECC Performance path Upgrade cost from 2009 IECC

.35 U-Factor Windows $0.00 (Same as 2009 IECC)R-40 Ceilings $80.00 (.0032per R/Sq ft)R-15 Cavity with OSB Sheathing $175.00 ( .08 per sq ft)

R-13 Continuous or R-19 Cavity Basement wall $215.00 (.08 sq ft )

R-13 Continuous or R-19 Cavity Crawl space wall $75.00 (.08 sq ft)

Checklist 402.4.1.1 Compliance (Air Barriers ect.) $380.00 (est. Matl & Labor)

Infiltration and Air sealing Upgrades $350.00 (est. Matl & Labor)

Infiltration Testing (Blower door test) $300.00 (General testing)

Duct Sealing (all ducts, penetrations, seams) $225.00 (est. Matl & Labor)

Keep ducts inside the envelope: No testing $0.00

Mechanical Ventilation to Meet ASHRAE 62.2 $225.00 (est. Matl & Labor)

75% CFL or High efficacy bulbs in Permanent fixtures $25.00 (est. Matl & Labor)

All return cavities fully ducted $275.00 (est. Matl & Labor)

Performance Based Code Package (Doc. and testing) $450.00 (est. Labor)

Total Upgrade Cost: $2,395.00

Third Party Certification and Verification Programs

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PERCEPTION

33

PERCEPTION

www.AllianceES.orgWaukegan, IL

Minneapolis, MN

R E A L I T Y

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Residential Market – May 2013

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Green Begins with “Blue”

Energy Efficiency

•Envelope•Distribution•Equipment•Lighting•Appliances


IndoorEnvironment•Bulk Moisture•Radon•Pest Control•HVAC•Combust. Safety•Materials•Commissioning

Energy Efficiency



ResourceEfficiency

•Site Planning•Location•Water•Materials•Waste Mgt.•Renewables

IndoorEnvironment•Bulk Moisture•Radon•Pest Control•HVAC•Combust. Safety•Materials•Commissioning

Energy Efficiency


Towards Positive

ResourceEfficiencyIndoor

EnvironmentEnergy Efficiency

Restorative

•Zero Energy•Captured Rainwater•Blackwaterremediation•Redlist free materials•Air quality testing•Accessibility •Aesthetics •Mental Health

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Performance-basedBuilding Certifications

2006IECC

2012IECC

2009IECC

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Energy Efficiency (EE) – Gateway DrugIndoor Environmental Quality (IEQ)Water Conservation (WC)Resource Efficiency (RE)Site and Community Impact (SC)

Location Efficiency (LE)

Innovation / Regional Priority (ID/RP)

5 – 7 Key Categories of Green

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• Build it (or remodel it) Tight, Ventilate Right • Reduce exposure

– Low or no voc paints, glues, primers, caulks, furnishings and etc (Green Guard Certified)

– Seal vents during construction or remodeling – Install shoe removal / dirt track – Air Seal between house and garage or remove garage

• Removal– Bath fan, vent hood range – HRV/ERV & MERV Filters

Indoor Environmental Quality IEQ

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• Test for leaks• Test pressure• Low flow

– Shower heads

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• Waste management – landfill diversion • Recycled content in building materials • Locally / regionally sourced materials (100 –

500 Miles)• Reuse / refurbished / used materials • FSC certified lumber• Natural building materials • Natural or fiber insulations • Cradle to Cradle / Green Label Plus / HPD

Resource Efficiency (RE)

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• Native Landscaping • Wildlife Certified Landscaping• Reduce compacted or loss soil during

construction• Stormwater Mitigation • Reduce Heat Island Effect• Dark Sky Initiative • Embodied Energy Of Construction • Gardens • Brownfield VS Greenfield • Floodplain or Wetland Avoidance

Site and Community Impact (SC)

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• Walkscore– Proximity to community resources

• (Schools, Grocery, Work, Restaurant, Hardware, Church and etc)

• Transit Service Availability • Walkability / Bike ability

– Higher Density Housing

• Studies find correlation between poor LE and higher mortgage defaults. – Invisible Energy

Location Efficiency (LE)

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The Continuum from Green to Sustainable

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National Green Building Standard (NAHB)

• Originally based on the NAHB Model Green Building Guidelines

• Based on the ICC/NAHB 700-2012National Green Building Standard, an ANSI-approved, consensus-based standard.

• ANSI Approval, committee of builders, mfr reps, code officials

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Types of Projects

• New Homes • Remodels • Multi Family• Community & Lot

Development

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Points-based Certification process with four levels of certification Bronze, Silver, Gold, and Emerald

Based on the ICC 700-2012 National Green Building Standard™.

Four green certification levels for homes available: Bronze, Silver, Gold, and Emerald.

Third party certification programs

National Green Building Standard (NAHB)

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www.homeinnovation.com/green

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GreenStar

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Remodeling Program for multiple project types• Whole house or Bathroom, Kitchen or etc• Add Conditioned Space• New Addition• New Foundation

New Homes Program (Mostly used in Minnesota)

Credits can be done retro-actively if you can prove it

Some strategies may both earn and penalize points

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• GreenStar has recommendations to reduce EMF Exposure

• Follow the Precautionary Principal

Electric & magnetic Fields (EMF)THE NEW IEQ ISSUE

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Credit Weightings

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MI GreenStar - Remodeling

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National Association of the Remodeling Industry

Green Certified Professional Designation

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IR Camera + Blower Door DIAGNOSTICS

Energy Ratings

www.AllianceES.orgHERSindex.com

www.AllianceES.org67

HERSindex.com

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•4 Checklists (1 envelope, 2 HVAC, 1 water management)•Sliding HERS score•Requires certified HVAC professionals*•Requires duct leakage testing even in conditioned space•Requires better than code air sealing (airtight drywall approach)•Version 2 had 25% market penetration in homes – down to 15% or less than 5% in some areas.

• Trained HVAC is the largest hurdle to the program. • Online Credentialing and Training is provided by

• Advanced Energy • ACCC

Energy Star version 3.0

Thermal EnclosureSystem:•Air Leakage•Insulation R-Value•Insulation Installation•Air Barriers•Thermal Bridging•High-Perf. Windows

Water ManagementSystem:•Roof Membranes•Flashing•WRB’s•Fabric Filters•Capillary Breaks•Drainage Layer

ENERGY STAR VERSION 3

HVAC QualityInstallation System:•Efficient Equipment•Right-Sizing•Air Distribution•Refrigerant Charge•Duct Installation•Pressure Balancing•Ventilation•Filtration

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Individual single-family and low-rise residential buildings (fewer than 4 stories) Can be mixed-use Certification process involves: LEED for Homes Provider Green Rater Needs little paperwork and

no LEED Online or GBCI Adjustable point scale Rewards multi-family projects

Requires Energy Star V2 HERS 70 or lower

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LEED for Homes

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Single-Family Homes

Program Scope and Applicable Building Types

Single-Family Production

Mid-Rise Multifamily

Low-Rise Multifamily

Gut Rehab

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LEED for Homes V2008

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Certified (45 – 54 points)Silver (55-64 points)Gold (65 - 84 points)Platinum (85+ points)

Total Core Points = 136

+/- up to 10 points for Home Size Adjuster (HSA)

Source: usgbc.org

LEED for Homes

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Online Scoring Tool

• QuickScore provides a project score

• Credit-by-credit path scores projects with greater accuracy

www.leedforhomes.org

How would your project rate?

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World’s First LEED Platinum / NAHB Emerald RemodelConstruction cost: $55.00 / sq ft

Courtesy of Weiss BD

Weiss Building & DevelopmentElgin, IL

LEED for HomesCertified: December 2011

LEED® Facts

Platinum 97.5Locations & Linkages 10Sustainable Sites 11Water Efficiency 6Energy & Atmosphere 17Materials & Resources 13Indoor EnvironmentalQuality 13Innovation & Design 10Awareness & Education 2

Covers multi-family buildingsbetween 4 – 12 stories Based on LEED for Homes Rating system >50% residential occupancy Adjustable point scale Certification process

Stricter IAQ requirements than BD&C Project teams choose: BD&C or Midrise

LEED for Homes Midrise

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Neighborhood Development

LEED Version 4 - 2015

• Mainly for Affordable Multi Family Housing • No Cost to Certify or Use Online Tool • New Construction and Major Rehab require

HERS 75 and Energy Star Version 3• Moderate Rehabs require HERS of 85• Lack of onsite 3rd party oversight and quality

assurance • More Prerequisites Compared to other

Programs• Easy online but time consuming documentation

Enterprise Green Communities

DOE Challenge Home

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DOE Challenge Home

• Must be ESv3 certified withIndoor Air Plus cert

• Be WaterSense certified• Meet IECC 2012 specs• Efficient plumbing systems• Renewable-ready for solar PV• Fortified for Safer Living

(Opt) Weiss Building & Development LLC

Passive House

• NewenHouse Kit Home – Viroqua, WI• Designed to meet LEED Platinum and

Passive House• No furnace / heating system• HERS: 22

Final ACH @ 50: 0.57• Certified Passive House: Nov 2011

EXTREME Energy EfficiencySuper air-tightMinimal HVACNot just “houses” – any buildingBuilt on DOE Challenge Home

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Submitted Energy Model

Certified Passive House Consultant

PHIUS + Rater

Avoidance of high global warming potential foams (eps, spray foam and etc)

Other Requirements

“Restorative” building redefining sustainabilityLargely commercial / institutional; some residentialRed list of prohibited materials

Inc. cadmium, arsenic, pvc, other heavy metalsNet Zero Water Net Zero or Net Positive Energy Health – Air Quality Testing + BiophilliaSocial Equity & Beauty Requirements No Greenfield ConstructionCertified after 1 year of occupancy via utility dataRequired ADA compliant

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Eco Sense Residence http://living-future.org/case-study/ecosenseCertified Petal Recognition (Pending Net Zero)

TheNestGr.com

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Are homes that are not

accessible still Green?

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Other Regional & State Programs

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Illinois is currently using International Energy Conservation Code (IECC) 2009. The IECC 2012 with Illinois amendments will be implemented statewide by Jan 1, 2013.

MUEC2009(NGBS)

IECC 2012(IL versionbegan Jan 1)

ENERGY STAR v3

& GC

LEED 2008(until ver4)

Passive House **

Ceiling insulation (Climate Zone 5 used for all values) R38 R49 R38 R38 R80 ‐ R100

2 x 6 exterior studs (R19) or 1” rigid insulation (R13 + 5) X X X Points R40 ‐ R50

Foundation wall insulation R‐value (continuous or frame/batt)

10/13 15/19 10/13 Points R40 ‐ R50

Windows U‐value

Residential Energy Program Comparison

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WHAT’S IN COMMON?

HERS score Energy Star forHomes

GreenStar National GreenBuilding Standard

Green Communities LEED for Homes DOE ChallengeHome

Passive House Living BuildingChallenge

3rd Party Oversight Strength

0

2

4

6

8

10

12

HERS Energy Star V3 GreenStar National GreenBuilding Standard



Program Popularity & Use

Scale 1 – 10 on Certification Costs

0

1

2

3

4

5

6





Cost of Certification

0

1

2

3

4

5

6

7

8

9

10





Added Construction Costs

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Are Green Homes

More Valuable?

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Greening of the MLS

9% Premium!

NAHB – Study : Energy Efficiency*• 9 / 10 Homebuyers will pay more Energy Efficiency vs 2 – 3% less

for none • 71% of Homebuyers prefer a home with energy ratings and

predicted usage • Homebuyers would pay $7,000 more upfront if it would saved them

$1,000 annually in utilities (7 year ROI)• 94% wanted all energy star appliances and devices

9, 90%

1, 10%

% of Survey Homeowners who will pay more for E.E

Pay more for E.ENot pay more for E.E

greenbuildermag.com/news/headlines/survey--green-life-wanted#.Ua97k0BQFni

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• 3rd party verifiable measures can be reviewed by donors and supporters.

• Volunteer Excitement • State or federal requirements and or tax credits

or incentives • Healthy for Occupants • Cost of Living

Green Affordable Housing Value

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“It is estimated (based on their earliest LEED Homes) that annual savings costs for electric, water, and heating will be at least $1,000 per home per year. The extra money available every month eases the hard decision “food or heat?” for families who live close to the poverty line.” – Habitat Kent County

Home Savings Across Certification Levels

Platinum Gold Silver Certified

Energy Savings 46% 42% 24% 24%

Conventional home monthly utilities

$345 $193 $91 $293

LEED-certified home monthly utilities

$189 $107 $70 $198

Monthly Savings $156 $86 $21 $95

Conventional home 30-year utilities

$196,725 $109,900 $51,952 $167,465

LEED-certified home 30-year utilities

$107,806 $61,087 $39,773 $113,277

30-year Savings* $88,919 $48,813 $12,179 $54,188*Assuming 3% inflation rate for utilities

Data from 144 LEED homes Certified in Midwest

Green Homes and Defaults

UNC Center for Community Capital • Institute for Market Transformation - March 2013

Home Energy Efficiency and Mortgage Risks Research study using CoreLogic loan performance data71,000 ENERGY STAR- and non-ENERGY STAR-rated single-family home mortgages was carefully constructed, accounting for loan, household, and neighborhood.

www.ccc.unc.edu

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Looking at Lifecycle costs

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alliancees.org/2012/12/17/post-occupancy-study-leed-for-homes-on-affordable-housing/

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Get involved

• Join our Mailing List or social media• Attend Free CEU Monthly Webinars

• Topics this year – Accessibility Certification, EMF avoidance, Strawclay building, Net Zero Home Remodel 101, ERV Comparisons and ETC

• Understanding LEED for Homes & Green Rater Courses Online and in person all year

• High Performance HVAC Courses in the Midwest • GreenStar Remodeling Qualification Courses All Year • Become a member for education discounts • Become a sponsor

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Thank You!

AllianceES.org

888 LEED APH ext 1

[email protected]

Demystifying Green Residential Certification Options & Codes€¦ · Recall key provisions of the...

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Transcript of Demystifying Green Residential Certification Options & Codes€¦ · Recall key provisions of the...