books.google.gr - A thorough, informative, and up-to-date reference on green, sustainable and energy-efficient home construction that clarifies definitions of green and sustainable and guides builders and architects through the process of new or remodel green construction, including issues of site, landscaping, durability,...http://books.google.gr/books/about/Green_from_the_Ground_Up.html?hl=el&id=aESgWPwysCcC&q=rigid+foam+insulation&utm_source=gb-gplus-shareGreen from the Ground Up