Final Test Results Are In: Quad-Lock’s Superiority in Green Roof Construction is Confirmed

Quad-Lock Building Systems, Ltd. is pleased to announce the completion of a 2-year Green Roof research project in partnership with the British Columbia Institute of Technology (BCIT) Centre for Architectural Ecology. The BCIT facility has the mission of providing world-class independent research and education in the field of green roof and living wall technology. The goal of this study was to provide objective data on the performance of various green roof structures. To our knowledge, this is North America’s first green roof study to be completed on an Insulated Concrete Form (ICF) structure.

Quad-Lock’s test structure (referred to as REM-10) incorporated an R-10 insulated slab foundation, Quad-Lock R-22 walls (6″ concrete), and R-22 Quad-Deck (9″ panels with 3″ concrete slab) for the roof structure that’s topped with a green roof layer (see below). This was compared side-by-side to a “control roof structure” featuring wood-framed walls and roof with an asphalt roofing layer (called Reference Roof).

The BCIT study collected electronic data evaluating:

Thermal performance and associated energy cost savings

Carbon emissions saved per square meter

Stormwater runoff quantity and quality for reuse

Plant species growth, soil media performances and maintenance requirements

Highlights of the findings include:

Heat Loss: Depending on the season, the Quad-Lock/Quad-Deck Green Roof REM-10 structure demonstrated a 50 to 75% reduction in heat loss, compared to the wood-framed control structure.

Heat Gain: Across all seasons, the REM-10 demonstrated an average 99% reduction in heat gain, compared to the wood-framed control roof structure.

Stormwater Runoff: Compared to a conventional roof without a green roof layer, the REM-10 retained a yearly average of 69% of the rain falling on the roof surface, with 31% potentially available for reuse or disposal in a municipal system.

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