It consists of 70 per cent recycled glass. Placed under the concrete slab, this high-performance, waterproof insulation helps raise the temperature of the floor slab and increases comfort. It loses as much as 75 per cent less heat through the slab than conventional construction. Spruce is a domestic, fast-growing and renewable softwood. It also has the lowest chemical content of the softwoods, so it improves the quality of the indoor air.
Finger joints connect short sections of lumber, reducing mill waste.
Birch, a fast-growing domestic hardwood, emits few chemicals and is very durable. This gypsum drywall minimizes taping, filling and sanding. It contains recycled material and creates less dust and volatile chemicals during installation. The air handler uses a variety of filters. Together, the fresh air system and associated heat recovery ventilator provide a healthier, more comfortable home.