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If you need to insulate your attic, blowing in cellulose insulation is an easy job you can do yourself by renting a blower. To install the insulation, blow the cellulose in up to the level of your floor joists. Cellulose is made from recycled newspapers and is treated with boron, a natural pest repellent and fire retardant. For best results, be sure to distribute the cellulose in an even layer. In an attic with two-by-six joists, you can achieve an insulating factor of R-19.
For more on insulation, consider: