Wellesley, MA
BSC was retained by Wellesley College to investigate sources of ongoing water infiltration problems at Founders Hall and develop a proposed design to resolve the problems. Founders Hall is a Neo-Gothic mass masonry building constructed in 1919 which currently houses classrooms and offices.
Cleveland, OH
Part of the Cleveland EcoVillage project, the two 1,800 square foot single-family GreenBuilt homes are built into an existing community in Cleveland’s Ohio City neighborhood. By combining architecture and engineering, these infill homes are energy-efficient, accessible and affordable. The main living space along with bedroom and bath are located on the first floor with two additional bedrooms, bath and loft space on the second floor. Covered front porches provide outdoor living space as well as limiting direct sunlight into the living room, decreasing solar gain in the summer. Conditioned...
Westford, MA
The Westford Habitat House is a 1,400 square foot single-family home located in Westford, Massachusetts. Built into an existing community, the three bedroom, two bath house features a front porch that serves to shade dining and living room windows as well as to provide a space for outdoor living. Large overhangs limit direct solar gain through the high performance windows during the summer and welcome solar gain in the winter. Rainwater and snowmelt from the roof drain off the overhang into a gravel drainage system that daylights at the rear of the site. An interior perimeter drain is also...
Westford, MA
The retrofitted 1850's house and barn, located in the heart of Westford, reuses the historic structure for modern living through the utilization of advanced technologies. Spray foam insulation installed to the underside of the roof deck with drywall applied below the insulation convert the attic into a finished space with two additional bedrooms and full bath. Exterior walls, basement walls as well as the basement floor use rigid insulation in their assemblies. Adjacent to the house, the retrofitted barn retains its original structure while now providing comfort and necessities for a modern...
Midwest
BSC was asked to examine bulk water intrusion issues occurring at windows (and window-wall interfaces) in recently built residential construction.  The residences were a modern design, with low-slope roofs, no overhangs, and multiple cladding types and colors; the exterior wall sheathing was either OSB structural panel or structural rigid foam, with the exterior surface taped as the
Bedford, MA
The Farmhouse retrofit is a combination of the renovation of an existing farmhouse and the new construction of a single-story, three bedroom and full bath accessible unit connected to the rear of the farmhouse. Both old and new constructions alike are equipped with high performance enclosures and high efficiency mechanical systems. Many specific window installation, eave and porch details were created and implemented in order to integrate the restoration of the home’s original aesthetic with the application of four inches of rigid insulation to both the walls and the roof. On the interior of...
Northeast
Masonry walls are generally highly durable. However, when masonry walls are too wet during freezing spells, freeze-thaw damage can occur. This issue has particular relevance for energy efficiency retrofits: interior insulation makes masonry colder in winter, lowering its ability to dry and increasing the penetration of freezing temperatures. It is critical to prevent such damage, especially in historic buildings – at the same time, a huge opportunity for energy savings is lost if retrofits are unnecessarily avoided because of ultra-conservative, unfounded, and/or misguided risk assessment...
Waterloo, ON
The Thermal Metric (TM) project was initiated in 2007 to support good design and construction practices by improving the way thermal performance is measured. Ultimately, the project goal is to develop a metric that can capture the in-service thermal performance of whole assemblies. More accurate measurements will allow truly high-performance assemblies (of all types of construction and insulation materials) to be identified and promoted.The TM project is supported by the TM consortium, a group of insulation manufacturers, and led by BSC. Previous research has identified multiple factors that...
Vancouver, BC
The Vancouver-area “leaky condo crisis” began to surface in the 1980s. An unusually large number of moisture-related problems, not only in condos but also in most building types, prompted extensive public attention and ultimately many government and industry investigations. The Vancouver Test Hut Project was initiated in 2005 to gain a deeper understanding of how different wall assemblies perform in the coastal BC climate. Results from this project help to explain why the crisis occurred and also suggest best practices for the future.Interior of the Vancouver Test HutA 900 square foot...
This criterion defines the roles of and minimum requirements for mechanical ventilation systems in new low-rise residential buildings.

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