Construction of the Rooftop Garden Floor System

Below is an annotated diagram showing how the Quad-Deck product works with other materials to create a green roofing system. This article comes courtesy of the Quad-Deck. The thermal properties of a rooftop is tremendous - often times saving our Residents 30-45% in heating bills. Quad-Lock, an ICF manufacturer based in Surrey, British Columbia, has supplied wall and roof ICFs for the project. Quad-Deck, a pan-form for suspended concrete floors, is well-suited as a substrate for green roofs.

The system forms one-way T-beam suspended spans that handle live loads of more than 100 lbs/sq ft. Its expanded polystyrene (EPS) panels are supported and reinforced by two integral steel beams molded into the product from end-to-end. The T-beam configuration can reduce a structure's steel consumption by 50%, and its weight by 40%. Shoring requirements are reduced by 50%, compared to hand-set suspended forms. On the flip side, the panels are insulated up to R34, and owner-ready for drywall or a suspended ceiling to be installed.

Images of the Green Roof Construction

The rooftop garden is a living, thriving garden - in our case, the vegetation is a mixture of fine turf and some natural grasses. Below are some images taken during the construction phase of the green roof. Tons of specially formulated dirt needed to be craned in from our vendor. The layer of dirt, believe it or not is only 2 inches deep and the turf is very healthy and lush.