Sourcebook Windows and Doors Sustainable Sources 1994-2000. Sustainable Sources 1994-2001. Composite materials use stable, durable materials, some of which are byproducts. Fingerjointed windows use small pieces of wood reducing the impact on large clear grained wood sources.
Recycled windows can mean reuse of salvaged windows or windows of recycled content.
Domestic hardwood veneers use a stable resource and assist our national economy. Some hardwood veneers such as luaun are from tropical mahogany trees. Domestic hardwood panel doors use wood types which are a stable resource in our economy. The panel style reduces the need for potentially harmful adhesives. Recycled doors are reused doors salvaged from earlier projects.