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For over 90 years, CertainTeed has had a reputation for quality and innovation in the building materials business. InsulSafe III was introduced in the late 70's as the first virgin blowing insulation product. Today, InsulSafe III is recognized as the world's premier insulation product - period.
Quality fiber glass insulation added to a home will increase its energy efficiency and help reduce costly heating and cooling loads. You can rest assured that InsulSafe III meets, exceeds, all fire safety standards.
In some areas of the country, heating costs determine how much insulation should be used; in others, air conditioning costs are the major influence. In many areas, both the heating and air conditioning costs contribute to the recommendations indicated on the chart below. Find the zone in which you live. Then use the R-Values on the chart for the zone as a quide to your insulatoin requirements.
| ZONE | ATTIC FLOOR (CEILINGS) | SIDEWALLS | FLOORS |
| 1 | R-19 | R-12 | R-11 |
| 2 | R-30 | R-19 | R-11 |
| 3 | R-38 | R-19 | R-13 |
| 4 | R-38 | R-19 | R-19 |
| 5 | R-49 | R-19 | R-25 |
| R-VALUE | BAGS PER 1000 SQ.FT. | MAXIMUM SQ. FT. PER BAG | MINIMUM WEIGHT POUNDS PER SQ. FT. | MINIMUM THICKNESS |
| To obtain a thermal resistance (R) of: | Bags per 1000 Sq. Ft. of net area: | Contents of bag should not cover more than (sq. ft.) | Weight per sq. ft. of installed installation should not be less than (lbs.): | Installed insulation should not be less than (inches): |
| R-60 | 42.6 | 23 | 1.064 | 23" |
| R-49 | 34.3 | 29 | .858 | 19-1/4" |
| R-44 | 31.1 | 32 | .778 | 17-3/4" |
| R-38 | 26.6 | 38 | .665 | 15-1/2" |
| R-30 | 20.8 | 48 | .521 | 12-1/2" |
| R-26 | 18.1 | 55 | .452 | 11" |
| R-22 | 15.0 | 67 | .374 | 9-1/4" |
| R-19 | 13.2 | 76 | .330 | 8-1/4" |
| R-13 | 9.0 | 111 | .225 | 5-3/4" |
| R-11 | 7.4 | 136 | .184 | 4-3/4" |
| R-VALUE | BAGS PER 1000 SQ. FT. | MAXIMUM SQ. FT. PER BAG | MINIMUM WEIGHT POUNDS PER SQ. FT. | MINIMUM THICKNESS |
| To obtain a thermal resistance (R) of: | Bags per 1000 sq. ft. of net area: | Contents of bag should not cover more than (sq. ft.) | Weight per sq. ft. of installed installation should not be less than: (lbs.): | Installed insulation should not be less than: (inches): |
| R-29 | 38.5 | 26 | .97 | 7-1/4" |
| R-22 | 29.4 | 34 | .73 | 5-1/2" |
| R-16 | 21.3 | 47 | .53 | 4" |
| R-15 | 19.3 | 52 | .48 | 3-5/8" |
| R-14 | 18.5 | 54 | .46 | 3-1/2" |