(The larger the R-value, the better insulator the material ... There are at least three brands of mineral wool batts for thermal wall insulation: Johns Manville TempControl, Roxul ComfortBatt ...

In many cases, adding blown-in, batt or spray foam insulation to existing insulation will be enough to help the space meet the R-value recommendation. However, the Department of Energy warns ...

Although fiberglass has a satisfactory R-value if it’s not professionally installed, it can lose thermal protection ... of fiberglass insulation: All in all, fiberglass batt is still one of ...

If you aren't familiar with R-value, it's basically an insulating material's resistance to heat flow, measured by its thermal ... Blanket insulation is available as batts or rolls and is the ...

FIBERGLASS BATT (BLANKET) INSULATION Sample R-Value: R-11 per 3-1/2" (example ... plastic and therefore flammable, it needs a thermal barrier dividing it from living spaces, and the standard ...

Most home builders will list an R value for their wall and roof insulation ... known as “thermal bridging.” Offering an example, Wilson said the fiberglass sheets or “batt” in a 2-by ...

Your next big decision has to do with the thermal materials used in the insulation ... It comes in batts, rolls, and loose-fill style. Cons: It has a modest R-value and is more permeable to ...

The thermal envelope refers to the ... Attics generally are accessible to add batt or blown-in insulation. Space permitting, an R value of 50 is optimum. Make sure you provide proper ventilation ...

When it comes to an environmentally responsible, green solution for insulation, the proven performer is batt and blanket insulation ... draft-free home and is high in R-value (3.8 per inch).

Insulation can be rolled out like ... will be conducted into the attic in a process called thermal bridging. Some builders lay 6- or 8-in. batts between joists and add a second layer across ...