The Lower School Addition at the Waynflete School Campus in Portland, Maine. Courtesy Scott Simons Architects.

Waynflete School Campus, Lower School Addition



The Waynflete Lower School is a 23,000-square-foot addition to the existing Waynflete School Campus and includes a 13,000-square-foot auditorium and a 12,000-square-foot academic building with classrooms and office space. Although the Lower School is physically connected to the existing school, the project is being treated as a separate structure for energy analysis and certification purposes. The project seeks to be an environmentally friendly, PHIUS+ certified structure with longterm benefits addressing issues of insulation, airflow, heating, and electricity.

Thornton Tomasetti is serving as the passive house consultant responsible for verifying that the project meets the stringent energy performance criteria to achieve certification. To ensure the most cost-effective and energy-efficient systems, our team conducted detailed energy analyses, evaluations and review of a variety of exterior walls and windows, lighting and HVAC design components.

Based on our energy analysis, the building is expected be more than 50 percent more efficient than a typical high performance school building. The project features triple glazed windows, R-40 walls, R-60 roofs, R-20 underslab insulation and 90 percent energy recovery effectiveness on the ventilation air supply.

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