Maine Coast Waldorf High School

  • PHIUS+ 2015 Passive House certified
  • Maine Advance Building certified
  • Net Zero

The nation’s first certified passive house high school. Designed to foster creativity, inspire curiosity, demonstrate environmental stewardship, and honor the learning spirit within its occupants.

Located on a pastoral property consisting of over seventy acres in Freeport Maine, the new high school building completes the campus by bringing students together from grades K through 12. The new 11,400 square foot building, built for 80 students, includes five flexible classrooms, a student center, conference and meeting rooms, faculty offices and a great room that can be used for movement, education and morning meetings.

The building design reflects the Waldorf principles for flexibility, abundant natural night, use of color, natural materials and anthroposophic design – creating organic expressionistic designs that cultivate a sensory experience. The simple volumes have been articulated to create visual interest, views, shading and improved natural lighting. The bend in the building reduces the length of the common corridors and defines a central place for lockers and spontaneous conversation. The timber framed portico adds shade and protection from the elements while creating an exterior room for teaching, eating and conversing; and the dormers on the roof bring natural light into the center of the building.

Energy conservation and sustainable design were essential components of the new high school. This project reached beyond the goal for net zero energy demand to pursue the highest energy standard available and to become the nation’s first high school to receive passive house certification. In addition to PHIUS + 2015 certification (Passive House Institute US), the new building has received Maine Advanced Buildings certification from Efficiency Maine, certifying that the building is at least 30% more energy efficient than Maine’s minimum energy code requirements. We achieved this through passive solar design, robust building envelopes, efficient HVAC systems, daylighting controls and shading.

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  • Specifications
  • Achievements

Project Type

Institutional

Project Location

Freeport, Maine

Project Year

2017

Project Size

11,400 sq. ft.

Design Team

Harry Hepburn, Christopher Briley, Alyssa Keating (Alumnus), Hans Breaux (Alumnus)

Contractor

Warren Construction Group

Partners/Consultants

Walsh Engineering Associates, Becker Structural Engineers, Allied Engineering, Bartlett Design, HEMESphere Design

Photos

Chuck Choi

Energy Use Intensity

4.76  What is EUI?

Energy use intensity (EUI) is an indicator of the energy efficiency of a building's design and/or operations. EUI can be thought of as the miles per gallon rating of the building industry.

It's calculated by dividing the total energy consumed by the building in one year (measured in kBtu or GJ) by the total gross floor area of the building (measured in square feet or square meters).

Certifications

Maine Advanced Buildings Certified

Awards

Press

A High Performance Building Starts With the Envelope!

The building envelope (wall and roof assemblies) uses dimensional and engineered wood lumber with dense-packed cellulose and 4” of rigid insulation was used on the exterior walls. The typical wall assembly has an R-value of 51.6 and the typical roof assembly has an R-value of 55.0. Triple-glazed windows and exterior doors were used through-out in addition to sophisticated building membranes and tapes to control the ingress of moisture from the outside and to prevent interior moisture from migrating into exterior walls. Ductless mini-splits were used for heating and cooling, and Energy Recovery ventilators (ERV’s) were installed to provide continuous fresh air. The building envelope and building systems were modeled using WUFI energy modelling software and the building was blower door tested twice, with a result of 0.040 CFM50/shell area.

Passive House Design

From the outset, the Maine Coast Waldorf High School building project team intended to deliver one of the state’s highest performing buildings constructed to date. Passive House performance was the basis of design where passive house features were viewed as the minimum standard rather than upgrades to the initial design. It was not certain during design that certification would be pursued. It was only when it was clear that design would achieve certification targets did the project team initiate the official certification process. This was easy to do since the owner and architect were the beneficiary of cash incentives provided by Efficiency Maine for high performance buildings through the now defunct Maine Advanced Buildings program.

"Harry and Chris understood from the start that we had asked them to create an inspiring building, meeting high standards of efficiency on an insane timetable. Truly working as a team with our contractor and faculty they delivered over and above what we could have ever hoped for and they got our students through the doors on time. They navigated working for a committee, with an ever morphing client of faculty, students, parents, and administration to create a harmony we all agree is absolutely beautiful."

Amy Eshoo

Lead, High School Building Committee, Maine Coast Waldorf School

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