QA

Quick Answer: What Is The Difference Between Faced And Unfaced Insulation

The Difference Between Faced And Unfaced Insulation Faced just means that kraft paper is attached to the insulation itself. The paper helps improve the sturdiness of the insulation so it doesn’t fall down as much. Unfaced insulation is just as good as faced, but it doesn’t have that paper attached to it.

Is it better to use faced or unfaced insulation?

Faced insulation is easier to install. This is because the insulation is held together by the paper vapor barrier, allowing the faced insulation to be rolled, moved, and stapled without falling apart. Unfaced insulation does not have the same cohesive strength, so it’s more susceptible to tearing during installation.

Does it matter if insulation is faced?

Faced, or the type with paper, is typically used in first-time applications, such as in walls, ceilings, floors, and in crawl spaces. Any time you use a faced insulation, the paper needs to be facing toward the living space. Unfaced is also your best choice for adding soundproofing to interior walls.

Where is faced insulation required?

Kraft-faced insulation should be installed in exterior walls, exterior basement walls, and attic ceilings by pressing the product into the wall cavity with the paper side facing outward, towards the installer. The insulation should be snug in the cavity, but not compressed.

What do you use unfaced insulation for?

Unfaced insulation is great for new construction, remodels, walls, floors, ceilings, basements, attics and crawlspaces. It’s best used for interior wall applications that do not face the outside and also in rooms that don’t need moisture control, like living rooms, dining rooms and studies.

Can you put faced insulation in attic?

When installing between the roof rafters of finished attic spaces, you can use either faced or unfaced batting. When using insulation that has paper or plastic batting, that moisture barrier should face outward toward the attic space.

Do you need vapor barrier with faced insulation?

Not every type of insulation needs a vapor barrier. But if it does, the barrier should face inside in northern, heating climates, and outside in humid southern climates.

Can you stack faced insulation?

Can you put faced insulation over faced insulation? No, faced insulation should not be added over existing insulation since the vapor retarder on top of or between layers of insulation can trap moisture.

What is the difference between R 13 and R 15 insulation?

The main differences between R13 vs R15 Insulation are: R15 insulation has good thermal resistance, whereas the thermal resistance of the R13 insulation is slightly lower. R13 insulation can block drafts in narrow spaces, whereas the R15 insulation is too bulky to fit in narrow spaces.

Can you put Poly over faced insulation?

More than likely, installing an additional layer of poly over kraft facing won’t cause any problems — it’s no more risky than if the wall had only unfaced batts and poly — and the risk of using poly on the interior is relatively low in a cold climate like New York’s.

Can you paint faced insulation?

If you want to paint foil-faced insulation, you must first employ the proper preparation techniques. The foil facing on insulation is nonporous, making it ill-suited for adhesion. Apply the paint in a particular way, or you may end up with subtle flaws in the finish coat.

What happens if insulation is installed backwards?

Insulation should have its paper side installed towards the inside of the home. So if it is installed upside down, the paper moisture barrier can actually keep moisture in-between the paper and the sub-flooring. This can lead to mold issues, as well as structural deterioration.

Should I use faced or unfaced insulation in my basement ceiling?

Yes. Faced insulation is actually recommended on basement ceilings and ceilings in general. The covering or “face” of the insulation prevents it from falling out and trickling down into the basement air. This is especially advantageous if the insulation is made of fiberglass, which can harmful if it’s ingested.

What does Faced mean on insulation?

When insulation is faced, we mean it is enclosed by a thin outer layer — the ‘face’ or vapor barrier, which protects it against humidity and moisture. The idea is to ensure that when it is used, for example, to insulate drywall, it ensures that both the insulation and the drywall stay dry for years to come.

What is the best insulation to use in your attic?

Many people consider fiberglass batt to be the best attic insulation. It consists of plastic reinforced by small glass fibers. The batt version comes in blanket form — i.e., small, pre-cut sections that you can lay down wherever you need to.

Is it OK to use unfaced insulation in attic?

You can use either faced or unfaced batting for this installation. When using insulation that has either paper or plastic facing, that moisture barrier faces outward, toward the attic space. Even if the attic space is unheated, it typically is warmer than the outside air in winter.

Which way should attic insulation face?

Regardless of whether fiberglass insulation is installed in a wall, attic, or crawlspace; the paper facing should always face toward the inside of the home. That’s because the paper contains a layer of asphalt adhesive which prevents water vapor from passing through it.

Should you put plastic over insulation before drywall?

Normally interior walls do not require a vapor barrier, but there are some situations where it is highly recommended. A continuous plastic vapor barrier behind the drywall will protect the interior walls of these areas from water damage.

Should you put plastic between insulation and drywall?

Without poly beneath the drywall, water vapor hits the drywall and diffuses through to the drier (in summer) indoor air. By installing a sheet of poly there, you cut off that drying mechanism and water that finds its way into walls can stay there longer and do more damage.

Is kraft facing a vapor barrier?

The facing on kraft-faced insulation is made of kraft paper with an asphalt coating that makes the paper impermeable to water vapor. The paper creates a vapor barrier that helps keep the water vapor in the warm, moist, heated indoor air from migrating outward into the wall or other structure.