Cellulose blow insulation is quick and inexpensive and seals air spaces better than batt insulation. It has a R-value of 3.8 per inch of insulation thickness. Fiberglas blown insulation has an R-value of 2.3 to 2.8 per inch and as such is less resistant but cheaper than cellulose. Because of the health risks it poses to the lungs and skin during installation, it is best installed by a professional.
For best installation, carefully fill all stud cavities with tight-fitting batts so that voids and gaps are completely eliminated. The batts are found in standard sizes but can be cut depending on the size and shape of the gap to be filled. One should be very accurate when cutting down these batts. Usually, slightly oversized batts are the best because they cover all space; small batts leave gaps and void. Summary: Insulation is important and available in a variety of options. Of course, each has its own benefits. Fiberglass batt insulation provides the best results, in terms of efficiency.]]>