Insulation's efficiency, along with its environmental impact, ranges widely. Let's look at a few of the most popular insulations on the market today, and maybe find one that is "just right" for you.

First, why do we insulate our homes? According to the Department of Energy, "Heating and cooling account for 50 to 70% of the energy used in the average American home. Inadequate insulation and air leakage are leading causes of energy waste in most homes."  Insulation makes your home warm in the winter and cool in the summer.  And a bonus, it keeps money in your pocket in the process.

Where you live will determine how much insulation you really need.  Use this quick zip code guide to figure how much insulation is necessary in your region.

This will help you establish what R-value (the rating system used for insulation) is proper for optimum efficiency in your home. The higher the R-value, the greater the effectiveness of the insulation.

Here a few typical forms of insulation:

Blankets: These come as rolls or batts and are made from flexible mineral fibers, including fiberglass and rock wool.

Blown-in: Blown-in loose fill is done by professionals by using equipment to blow in loose fibers or pellets. This can be done with cellulose (a great green option), fiberglass, or rock wool.

Foam Insulation: Foam insulations, however, are made from petrochemicals and are not recyclable.

You may have found your "just right" fit in the forms above, but there are still greener options now gaining in popularity. These include recycled paper insulation, recycled denim, hemp, and cotton. Be sure to talk to your contractor about what options would be a good, and green, fit for your new home.

Source: www.realtytimes.com