R value is a measure of insulation s ability to resist heat flow.
Attic insulation types hawaii.
The cost jumps up to more than 200 per month for air conditioned homes.
State of hawaii department of business economic development and tourism energy resources and technology division p o.
Eshield radiant barrier is insulation for hawaii s climate.
The higher the r value the better the thermal performance of the insulation.
Insulation levels are specified by r value.
The most common insulation materials are fiberglass cellulose and foam.
In general an attic s r value should be between r 30 and r 49.
For diy attic insulation you ve got two choices.
Choose from two types.
Your home s r value score will guide you toward the type of insulation you need.
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Savings of 30 to 50 per month are feasible.
Both can be added to uninsulated attics or layered over existing material.
When installed properly both types of insulation fill all of the nooks and crannies in a space and.
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State of hawaii for more information on ceiling insulation and building energy efficiency refer to the hawaii model energy code application manual.
This state of the art attic insulation reflects 93 percent of all radiant heat transfer or heat from the sun cooling your attic by as much as 40 degrees.
Loose fill or batt the common term for blanket insulation.
This pie chart shows electrical energy use for a typical family of four in hawaii.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
The type of insulation you need depends on which type is currently installed and the required r value.
Insulation types include loose fill batts rolls foam board spray board and vapor barriers.
Spray foam offers the best attic insulation performance available.
4 hawaii homeowner s guide to energy comfort value energy cost reduction strategies typical utility bills are 90 per month.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
Closed cell and open cell aka 2 pound and pound respectively.
In particularly cold climates you might go up to r 60.
