The most common materials include expanded polystyrene similar to styrofoam extruded polystyrene and polyisocyanurate.
Best rigid insulation for attic.
You can mix the type and material of insulation too.
Rigid foam offers a high r value per inch of thickness and can be cut to fit almost any space.
For diy attic insulation you ve got two choices.
The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy.
Rigid foam insulation.
Both can be added to uninsulated attics or layered over existing material.
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.
Modern technology of blanket insulation today is considered the best insulation for attic.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
It s a good choice for.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Make sure your home is properly insulated in all these locations.
The best insulating rigid foam.
However not all rigid foam insulation packs are created equal.
Foam boards rigid panels of insulation can be used to insulate almost any part of your home from the roof down to the foundation.
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.
Loose fill or batt the common term for blanket insulation.
Rigid foam comes in 4 x 8 foot sheets and thicknesses of 1 2 inch to 4 inches.
They are very effective in exterior wall sheathing interior sheathing for basement walls and special applications such as attic hatches.
Rolls and batts are produced of mineral wool and fiberglass.
It is often used as a layer of continuous insulation on exterior walls and in the roof.
Achieving greater r values in attics.
Rigid foam insulation offers as much as double the r value of traditional fiberglass batts according to the united states department of energy.
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.
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.
The ideal attic insulation r value is different than the ideal wall insulation r value.
So it s time to pay close attention to what s happening up there.
