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Integrating Beauty, High Performance and Red List Free Materials
Cowhorn Vineyard + Garden Tasting Room
COWHORN VINEYARD + GARDEN
DESIGN
DESIGN
DESIGN
DESIGN
SUSTAINABLE STRATEGIES
Path to
Net Zero
PASSIVHAUS APPROACH
Passivhaus as a Path to Net Zero
1. Minimize Loads
• Insulation & Airtightness
• Heat-Recovery Ventilation
• Exterior Shading
2. Simple, Efficient Systems
• Minimized Loads allow Simple, Affordable Systems
3. Renewable Supply
• Loads can be met with Sustainable Energy Grid
• Net Zero within Reach (now or later)
• “Winter Gap” is minimized
PASSIVHAUS APPROACH
Passivhaus as a Path to Net Zero
Invest in this… …so we can heat like this (especially when solar power isn’t there)
PASSIVHAUS APPROACH
Envelope Investment Opportunity
Residential Building Energy Use
We typically have one opportunity to address
40-50% of a building’s lifetime energy use
Building Component Lifespans
PASSIVHAUS APPROACH
Benefits
• Health
• Comfort
• Durability
• Resiliency
• Energy Savings
PASSIVHAUS APPROACH
PASSIVHAUS APPROACH
Impact on Design
Deep walls and roof assemblies
Walls = 19” R-value = 60
Roof = 28” R-value = 96
PASSIVHAUS APPROACH
Impact on Design
Breathable Envelopes in High Performance Buildings
PASSIVHAUS IN DETAIL
Details: Thermal Bridge-Free + Airtightness
PASSIVHAUS IN DETAIL
Details: Thermal Bridge-Free + Airtightness
PASSIVHAUS IN DETAIL
Details: Thermal Bridge-Free + Airtightness
PASSIVHAUS IN DETAIL
HVAC Systems for low-load buildings
PASSIVHAUS IN DETAIL
PH Challenges during Construction
New Assemblies
• Mock-ups
• Pre-Construction Meetings
PASSIVHAUS IN DETAIL
PH Challenges during Construction
Air-tightness
• Signage
• QC
PASSIVHAUS IN DETAIL
PH Challenges during Construction
Avoiding thermal bridges
• Sequencing
• QC and Thermal Imaging
PASSIVHAUS IN DETAIL
Energy Model Results and Incentives
• 51% Energy Savings over baseline using code-minimal heat pump
• 68% Energy Savings over baseline using code allowed electric resistance
LIVING BUILDING CHALLENGE
LIVING BUILDING CHALLENGE
LIVING BUILDING CHALLENGE
Living Building Challenge
7 Petals | 20 Imperatives
PLACE
WATER
ENERGY
HEALTH & HAPPINESS
MATERIALS
EQUITY
BEAUTY
LIVING BUILDING CHALLENGE
Materials Petal
Endorsing products + processes that are
healthy for all species through time
• Red List
• Embodied carbon footprint
• Responsible industry
• Appropriate sourcing
• Conservation + reuse
Results in cleaner air, cleaner water and
healthier workers, inhabitants and wildlife
LIVING BUILDING CHALLENGE
Material Selection Strategy - Exterior
LIVING BUILDING CHALLENGE
Material Selection Strategy - Exterior
LIVING BUILDING CHALLENGE
Material Selection Strategy - Interior
LIVING BUILDING CHALLENGE
Material Selection Strategy - Interior
LIVING BUILDING CHALLENGE
Material Selection Strategy – Everything Else
MATERIALS PETAL IN DETAIL
Process for Materials Selection
MATERIALS PETAL IN DETAIL
ALTERNATIVES
Process for Materials Selection
MATERIALS PETAL IN DETAIL
Process for Materials Vetting
MATERIALS PETAL IN DETAIL
Process for Materials Vetting
• Dedicated staff member
• Initial reach out to manufacturers
MATERIALS PETAL IN DETAIL
Process for Materials Vetting
• Provide follow-up documents for
ingredients list
• Documentation is key!
MATERIALS PETAL IN DETAIL
LBC Challenges during Construction
• No Substitutions – Can’t use what’s on the truck
• Submittals from residential sub-contractors
• Having large enough recycling facilities
MATERIALS PETAL IN DETAIL
LBC Challenges during Construction
• PVC is in everything!
TOUR + QUESTIONS
