Fiberglass is made of molten glass that is spun or blown into fibers. About 40% to 60% of recycled glass content is used by manufactures. Fiberglass has proven its ability to make buildings more energy efficient and reduce energy costs.

There are two types of fiberglass: KRAFT (FACED) AND UNFACED

New England Spray Foam Associates offers both types of fiberglass.

What’s the main difference between faced and unfaced?

Fiberglass that is faced keeps moisture out because it is lined by Kraft paper or plastic, whereas unfaced only provides insulation. Kraft insulation normally used for ceilings, floors, attics, finished basements, and exterior walls installations. Unfaced insulation is useful for noise reduction, energy conservation, and keeping pollutants out.

Kraft fiberglass is also a vapor retarder and in many cases is used in homes depending on your local building codes.