Leff Project – LEED Platinum Single Family
Strategies and Results
The existing home foundation was reused, and advanced framing techniques and building envelope upgrades were used to improve energy efficiency and reduce construction waste. Superior walls with spray foam were used in the crawl space foundation of the new addition. BioPCM phase change material was used in west facing walls and ceiling deck under solar shingles. A spray foam/rock wool combination was used in other areas in the home. The south-facing roof incorporates DOW POWERHOUSE™ solar shingles to generate building-integrated renewable energy. Earth tubes were installed to temper incoming air.
Ultra high-efficiency bathroom fixtures, including a wall-mounted Duravit toilet in master bath, were used to maximize water efficiency. Drought tolerant natural landscaping was used to reduce irrigation water demand by an estimated 62%. Aging-in-place design strategies were incorporated to ensure owners could stay in the home regardless of mobility issues that may arise in the future. Plumbing for future grey water management was installed as local building codes allow. Energy and solar modeling performed to bring project as close to net-zero energy use as possible.
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Project Team Details
Builder: Meadowlark Builders
Architect/Designer: Architectural Resource
Engineering: Structural Design Incorporated
Energy /Green Rater: Kevin McNeely
Consultant: Dave Eifred of GreenLife Building LLC
Project Type: Single Family
Conditioned Space: 2410
Lot Type: Previously Developed
Construction Type: Custom
Project Certification Details
Certification Program: LEED for Homes
HERS Index Rating: 20 (80% more efficient than code!)
On-Site Renewables: DOW Solar Shingles
BioPCM Phase Change Material
Aging in Place Design Strategies: Energy Recovery Ventilator (ERV)
Pre-plumbed for future Grey Water Managment System
Urban Location: Mass transit/local retail
Incentives, Financing or Tax Credits used: