Although the latest gadgets and cutting-edge technologies get most of the attention when thinking about green building, builders already know the key to an energy-efficient home: build a tight, well insulated envelope. However, builders have to do this despite differences in floor plans, sites, climates and labor restrictions/shortages. SIPs can be used to build any style of home, in most climates, and with less experienced laborers. Builders use SIPs to reduce air leaks and provide greater insulating capability than traditional building methods. They can cut heating and cooling costs up to 50 percent, and can even help save money by speeding construction and allowing for smaller furnaces and air conditions. SIPs also contribute to healthy indoor air by sealing out pollutants.