Bay Area Energy Upgrade Attic Insulation R Value

By looking at the map here you can compare how the bay area s recommended r values zone 3 compare to the rest of the country.

Bay area energy upgrade attic insulation r value.

Existing 3 4 inches of insulation. According to reputable bay area attic insulation installers proper insulation works by limiting the amount of air moving throughout the home. The department of energy estimates that you can save up to 10 percent annually on your energy bill when you insulate your attic. Find out if your home is elligible.

But newer homes in central and southern arizona are insulated to ratings of r 30 to r 38 while newer homes in northern arizona generally have attic insulation at r 60 because of colder winters. The still air that is retained in the insulation helps to prevent most of the heat from escaping from one area to another. The program provides on bill financing which means you pay for your upgrades with the savingsyou get for common water efficiency measures such as irrigation faucets and efficient toilets. Bge says that increasing insulation thickness from 2 to 3 inches r 5 to 8 to 14 r 30 inches can save you 95 to 145 per year in 2010 for every 1 200 square feet of ceiling area.

For san francisco recommended insulation r values in an existing home are as follows. How attic insulation can help to lower your energy bills. Recommended insulation levels for retrofitting existing wood framed buildings. This attic features newly installed insulation and radiant barrier foil.

The table opposite suggests r values by zone as indicated in the map of the united states. Evaluate your house s current r value and recommend whether additional r value is needed and appropriate types of insulation. Wood frame wall cavity. It also suggests r values when adding insulation to uninsulated or under insulated attics crawl spaces and walls.

To get more detailed recommendations use the department of energy s insulation calculator. The attic floor is filled to an r value of r 49 which provides optimal energy efficiency at 16 75 inches. Learn how you can save with atticare s energy efficiency home upgrades.