BuildingGreen, the publisher of the well-respected GreenSpec Directory and Environmental Building News newsletter, today announced its seventh annual "Top-10 Green Building Products" list.

Of the products singled out, half are deemed green because they're made from natural, rapidly renewable, or agricultural waste materials—and therefore require significantly less energy to manufacture. The list includes FSC-certified and formaldehyde-free bamboo flooring, doors made with wheat-straw particleboard, a transparent finish produced from a byproduct of cheese making, and a compressed-earth masonry block.

Three of the remaining products save energy, including a low-cost, solar water-heating system; a combination heating, water heating, and heat-recovery ventilation system; and a system for monitoring real-time energy (and water) use in buildings.

Announced at the U.S. Green Building Council's Greenbuild Conference in Boston, the Top-10 Green Products list has become a yearly ritual. When making its selections, Brattleboro, Vt.-based BuildingGreen elevates what it considers the most exciting of the more than 200 products added to its GreenSpec Directory in the last year.

"New products seem to be appearing all the time, making it a challenge for our staff to keep up," says BuildingGreen president AlexWilson.

Last year's list included LED downlights from Cree LED Lighting Solutions, "Alpenglass" fiberglass windows from Alpen Energy Group, the Cube3 Ultra urinal from Caroma USA, and the 800 Series line of Evolution dishwashers from Bosch.