Portland-based Terra Bona Materials launched Terralite Cement at Greenbuild this year hoping to deliver a product that meets the energy-efficiency demands of the greater building science community. Terralite is a “lightweight” product made with cement and an aggregate that includes expanded polystyrene. Marketing materials claim the product is 20% of the weight of traditional concrete and, according to company president Terry Cotton, insulative with an R-value of 1.8 per inch.
The media relations group for Oak Ridge National Laboratory just released more information about recent field tests by ORNL of a new roof and attic system that keeps homes cool in the summer and prevents heat loss in the winter. The system is explained in the graphic embedded above (click to expand). In addition, I’ve included some graphics below to illustrate more of what the system looks like and how it saves energy.
There’s been a lot of talk about cotton insulation, but I’ve seen it used in countless projects. It’s probably worth noting that Bonded Logic’s recycled-content product hit the mainstream with a roll-out of UltraTouch Denim Insulation to 165 Lowe’s stores this month. The product is made with 80% post-consumer recycled natural fibers and doesn’t have added formaldehyde, VOCs, or chemical irritants, according to Bonded Logic.