DFW Insulation, Longview Insulation, Harlingen Insulation, Little Rock Insulation, and NW Arkansas Insulation
Having Proper insulation in your attic will help reduce your energy bills. In most houses, it is easier to get complete coverage of the attic floor with blown-in loose-fill insulation. It is best to hire an insulation contractor for this job. Loose-fill insulation must be prevented from shifting into vents or from contacting heat-producing equipment (such as recessed lighting fixtures). Block off those areas with baffles or retainers to hold the loose-fill insulation in place.
When you stack new insulation on top of existing attic insulation, the existing insulation is compressed a small amount. This will slightly decrease the R-value of the existing insulation. This effect is most important if the new insulation is denser than the old insulation. You can compensate for this stacking effect and achieve the desired total R-value by adding about one extra inch of insulation if the old insulation is fiber glass, or about 1/2 inch if the old insulation is rock wool or cellulose.
Your contractor should attach vertical rulers in your attic to help you see that the proper depth was installed. The contractor should also provide a signed and dated certificate describing the insulation installed, including inches added, and r-value.
Source: US Department of Energy
U.S. Department of Energy Recommended* Total R-Values for New Houses in Six Climate Zones - How Much Insulation Does My Home Need?
* These recommendations are cost-effective levels of insulation based on the best available information on local fuel and materials costs and weather conditions. Consequently, the levels may differ from current local building codes. In addition, the apparent fragmentation of the recommendations is an artifact of these data and should not be considered absolute minimum requirements.
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