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  2. R-value (insulation) - Wikipedia

    en.wikipedia.org/wiki/R-value_(insulation)

    Loose-fill insulation comes in loose fibers or pellets and should be blown into a space. Rigid foam is more expensive than fiber, but generally has a higher R-value per unit of thickness. Foam-in-place insulation can be blown into small areas to control air leaks, like those around windows, or can be used to insulate an entire house. [33]

  3. Building insulation - Wikipedia

    en.wikipedia.org/wiki/Building_insulation

    To determine whether you should add insulation, you first need to find out how much insulation you already have in your home and where. A qualified home energy auditor will include an insulation check as a routine part of a whole-house energy audit. [15] However, you can sometimes perform a self-assessment in certain areas of the home, such as ...

  4. Spray foam - Wikipedia

    en.wikipedia.org/wiki/Spray_foam

    Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...

  5. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    A small quantity of polyolefin is melted as an adhesive to bind the product together (and is preferable to formaldehyde adhesives). Installation is similar to fiberglass, without the need for a respirator but requiring some additional time to cut the material. Cotton insulation costs about 10-20% more than fiberglass insulation. [23]

  6. Cellulose insulation - Wikipedia

    en.wikipedia.org/wiki/Cellulose_insulation

    It requires 20 to 40 times as much energy to produce furnace-made insulation materials compared to cellulose. [ citation needed ] Cellulose is made by electrically powered machines while mineral insulation is made in fuel powered furnaces, [ citation needed ] reducing this advantage to a degree, as electricity generation is less than 50% efficient.

  7. 47 Gifts for Tween Girls, Recommended by Tweens and the ... - AOL

    www.aol.com/47-gifts-tween-girls-recommended...

    Turns out: Your tween will love it just as much as you do—and probably get some lunchroom cred for having it. You can choose from a 14-, 20-, 30-, 40- or 64-ounce tumbler and choose from 30 colors.

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