Kraft-Faced Insulation

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Kraft-Faced Insulation

What is Kraft-Faced Insulation?

Insulation with kraft paper facing that acts as a vapor barrier and air barrier, commonly used in wall and ceiling applications to control moisture and improve energy efficiency in residential and commercial construction.

Description

Kraft-faced insulation is insulation with kraft paper facing that acts as a vapor barrier and air barrier, commonly used in wall and ceiling applications to control moisture and improve energy efficiency in residential and commercial construction. The kraft paper facing is typically attached to one side of fiberglass or mineral wool insulation batts, providing both thermal insulation and moisture control in a single product. This combination makes kraft-faced insulation a popular choice for many construction applications where vapor control is important.

The primary purposes include providing thermal insulation, controlling vapor transmission, creating an air barrier, simplifying installation with integrated vapor barrier, meeting building code requirements for vapor barriers, improving energy efficiency, and reducing moisture-related problems in building assemblies.

Construction and materials involve kraft paper facing, insulation core materials, adhesive systems, and manufacturing processes that create integrated insulation products.

FAQs

  • What is kraft-faced insulation?

    Kraft-faced insulation is insulation with kraft paper facing that acts as a vapor barrier and air barrier, providing both thermal insulation and moisture control.

  • Which direction should kraft facing be installed?

    Kraft facing should be installed toward the warm side of the assembly, typically facing the interior in heating climates.

  • What’s the difference between kraft-faced and unfaced insulation?

    Kraft-faced insulation has an integrated vapor barrier, while unfaced insulation requires a separate vapor barrier if moisture control is needed.

  • Can kraft-faced insulation be used in all climates?

    Kraft-faced insulation is primarily designed for heating climates and may not be appropriate for hot, humid climates without careful consideration.

  • How do you seal kraft-faced insulation?

    Seal by overlapping flanges, stapling to framing, sealing joints with tape, and ensuring continuous vapor barrier coverage.

  • Is kraft facing flammable?

    Kraft paper facing is combustible and must be covered with approved finish materials like drywall for fire safety.

  • Can kraft-faced insulation get wet?

    While the kraft facing provides moisture resistance, the insulation should be protected from excessive moisture during and after installation.

Fun Fact

Fun Fact: Kraft paper gets its name from the German word “kraft” meaning strength! The kraft process for making paper was invented in Germany in the 1870s and produces stronger paper than other methods. Kraft-faced insulation was first developed in the 1950s as builders recognized the need for integrated vapor barriers. Interestingly, the kraft facing on insulation is often perforated in specific patterns to allow some moisture transfer while still providing vapor control!

CSI Code

07 21 00

NAHB Code

720