Best Rigid Insulation For Attic

The ideal attic insulation r value is different than the ideal wall insulation r value.

Best rigid insulation for attic.

Rigid foam insulation packs a lot of r value into a relatively thin package. Make sure your home is properly insulated in all these locations. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. This additional r.

Foam boards rigid panels of insulation can be used to insulate almost any part of your home from the roof down to the foundation. However not all rigid foam insulation packs are created equal. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. For diy attic insulation you ve got two choices.

Rigid foam comes in 4 x 8 foot sheets and thicknesses of 1 2 inch to 4 inches. Rigid foam insulation. Achieving greater r values in attics. So it s time to pay close attention to what s happening up there.

While most of them pack a lot of r value into a thin layer but you also have to consider how the insulation will affect the performance of your project the overall costs and the best method to get the bang for your buck. Rolls and batts are produced of mineral wool and fiberglass. Loose fill or batt the common term for blanket insulation. Rigid foam insulation offers as much as double the r value of traditional fiberglass batts according to the united states department of energy.

Insulation ratings can be improved by adding more layers of insulation. Modern technology of blanket insulation today is considered the best insulation for attic. Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends.

Both can be added to uninsulated attics or layered over existing material. It is often used as a layer of continuous insulation on exterior walls and in the roof. Rigid foam offers a high r value per inch of thickness and can be cut to fit almost any space. You can mix the type and material of insulation too.

The most common materials include expanded polystyrene similar to styrofoam extruded polystyrene and polyisocyanurate. They are very effective in exterior wall sheathing interior sheathing for basement walls and special applications such as attic hatches. Used in this way the foam lowers the loss of energy through framing members a phenomenon called thermal bridging and increases the overall r value of the roof or wall assembly.