Faced vs Unfaced Insulation: Which is Right for Your Home?

Unfaced vs Faced Insulation
Unfaced vs. Faced Insulation, Images / https://www.jm.com/

Faced vs Unfaced Insulation: Which is Right for Your Home?

Insulation plays a crucial role in maintaining the comfort and energy efficiency of your home.

If you’re experiencing cold walls, high energy bills, or drafty rooms, it may be time to check your insulation.

When it comes to choosing the right insulation for your home, faced and unfaced fiberglass insulation are two popular options.

In this comprehensive guide, we’ll explore the differences between faced and unfaced insulation, their applications, materials, costs, pros, and cons.

By the end, you’ll be equipped with the knowledge to make an informed decision about which type of insulation is best suited for your home.

What is Faced Insulation?

Faced insulation, despite its name, doesn’t have a face on it. Instead, it refers to insulation with a thin vapor barrier attached to one side of the material.

This vapor barrier acts as a protective layer, preventing moisture from penetrating the insulation.

Faced insulation is typically recommended for areas where humidity and moisture are potential risk factors, such as attics, basements, and exterior walls.

Where to Install Faced Insulation

Faced insulation is best suited for areas where moisture and humidity may be present. Here are some common locations where faced insulation is typically installed:

  • Attics: Faced insulation helps prevent moisture buildup and protect against temperature fluctuations in the attic.
  • Basements: Due to their below-ground nature, basements are prone to moisture and humidity. Faced insulation can provide an extra layer of protection against these factors.
  • Exterior walls: Faced insulation acts as a barrier against moisture that may seep through the walls from the outside.

Faced Insulation Materials

Faced insulation comes in various materials, each with its own advantages and considerations.

Here are some commonly used materials for faced insulation:

  • Vinyl: Ideal for homes in moist climates or areas at risk of wildfires, vinyl-faced insulation provides moisture resistance and added protection.
  • Kraft paper: While kraft paper is flammable and may pose a greater fire risk, it is still commonly used in faced insulation due to its affordability.
  • Aluminum foil: Aluminum-faced insulation is fire-resistant and reflects solar heat, making it suitable for areas with high temperature differentials.

Cost of Faced Insulation

The cost of faced insulation can vary depending on factors such as climate zone and desired R-value.

On average, faced insulation costs between $0.50 and $2.00 per square foot, including installation.

Keep in mind that higher R-values and specialized materials may increase the cost.

Pros of Faced Insulation

  • Moisture protection: The vapor barrier in faced insulation helps prevent moisture damage, making it ideal for areas prone to humidity and moisture buildup.
  • Heat reflection: Insulation with an aluminum foil facing reflects heat away from the home, contributing to energy efficiency.
  • Easy installation: Faced insulation is relatively easy to install, making it a convenient option for homeowners or contractors.
  • Mold prevention: The moisture resistance provided by faced insulation helps inhibit mold growth.
  • Additional functions: Some facing materials serve multiple purposes, such as acting as air, radiant, or vapor barriers.

Cons of Faced Insulation

  • Higher cost: Faced insulation generally costs more than unfaced insulation due to the additional materials used in the manufacturing process.
  • Single-layer installation: Faced insulation cannot be layered like unfaced insulation, limiting its versatility in terms of achieving higher R-values.
  • Fire hazard: Certain faced insulation materials, such as kraft paper, pose a fire hazard. It’s important to consider the fire resistance of the specific faced insulation material you choose.

What is Unfaced Insulation?

Unfaced insulation, as the name suggests, lacks the facing material found in faced insulation.

Without a vapor barrier, unfaced insulation is typically used in dry, interior locations where moisture is not a concern.

Unfaced insulation offers soundproofing benefits and is generally more cost-friendly than faced insulation.

Where to Install Unfaced Insulation

Unfaced insulation is suitable for dry, interior locations where moisture is not a significant risk factor.

Here are common areas where unfaced insulation is installed:

  • Interior walls: Unfaced insulation can be installed within interior walls to provide thermal insulation and soundproofing.
  • Under floors: Unfaced insulation helps insulate floors and prevents heat loss.
  • Ceilings: Unfaced insulation can be used to insulate ceilings and reduce heat transfer between different levels of a home.
  • Attic floors: When the attic is used as a living space, unfaced insulation beneath the floor helps maintain a comfortable temperature.
  • Crawl spaces: Unfaced insulation can be applied in crawl spaces to prevent heat loss and improve energy efficiency.

Unfaced Insulation Materials

Unfaced insulation is available in a variety of materials, providing flexibility in terms of performance and cost.

Here are some commonly used materials for unfaced insulation:

  • Fiberglass: Fiberglass insulation is one of the most popular types of unfaced insulation due to its affordability and versatility.
  • Mineral wool: Mineral wool insulation offers excellent fire resistance and soundproofing properties, making it suitable for various applications.
  • Plastic: Unfaced plastic insulation, such as polyethylene foam, is commonly used in applications where moisture resistance is required.
  • Polystyrene: Unfaced polystyrene insulation, known for its high R-value, is often used in areas that require superior thermal insulation.
  • Polyurethane: Unfaced polyurethane foam insulation provides excellent thermal insulation and is commonly used in residential and commercial buildings.
  • Foam boards: Unfaced foam boards, such as expanded polystyrene (EPS) or extruded polystyrene (XPS), are popular choices for insulation in walls and roofs.
  • Cellulose: Made from recycled paper, unfaced cellulose insulation is an eco-friendly option that provides good thermal performance.

Cost of Unfaced Insulation

The cost of unfaced insulation varies depending on factors such as the material used and the desired R-value.

On average, unfaced insulation costs between $0.50 and $1.75 per square foot, including installation.

Keep in mind that specialized materials or higher R-values may increase the cost.

Pros of Unfaced Insulation

  • Enhanced warmth: Unfaced insulation helps keep your home warmer by reducing heat loss through walls, floors, and ceilings.
  • Soundproofing: Unfaced insulation has sound-dampening properties, making it ideal for areas where noise reduction is desired.
  • Fire resistance: Many unfaced insulation materials, such as fiberglass and mineral wool, are naturally fire-resistant.
  • Layering capability: Unlike faced insulation, unfaced insulation can be layered to achieve higher R-values and improve energy efficiency.
  • Material options: Unfaced insulation is available in a wide range of materials, allowing homeowners to choose the most suitable option for their specific needs.
  • Cost-friendly: Unfaced insulation is generally more affordable compared to faced insulation, making it an attractive option for budget-conscious homeowners.

Cons of Unfaced Insulation

  • Harder installation: Unfaced insulation can be more challenging to install compared to faced insulation, as it requires additional securing methods and may tear more easily.
  • No moisture resistance: Unlike faced insulation, unfaced insulation lacks a vapor barrier, making it unsuitable for areas with high humidity or moisture levels.

Faced vs Unfaced Insulation: A Comparison

When deciding between faced and unfaced insulation, it’s essential to consider the specific requirements of your home and the intended application.

Here’s a breakdown of how faced and unfaced insulation compare in various aspects:


Both faced and unfaced insulation come in rolls or batts.

Faced insulation has a thin layer of facing material on one side, while unfaced insulation lacks this additional layer.

In terms of appearance, both types are similar, with the main difference being the presence or absence of a facing material.

Best appearance: Tie


Faced insulation excels in preventing moisture damage due to its vapor barrier.

However, unfaced insulation can be layered to achieve higher R-values, making it more effective at keeping your home warm in the winter.

Unfaced insulation also provides better sound protection.

Best for keeping you warm: Unfaced insulation


Faced insulation is generally more durable than unfaced insulation due to the protective layer provided by the facing material.

However, the overall durability depends on the specific material used. For example, fiberglass insulation can last up to 80 to 100 years.

Most durable: Faced insulation


Faced insulation tends to cost more than unfaced insulation due to the additional materials involved in manufacturing.

On average, faced fiberglass insulation ranges from $0.50 to $2.00 per square foot, while unfaced fiberglass batts range from $0.50 to $1.75 per square foot.

Most affordable: Unfaced insulation


Some faced insulation materials, such as kraft-faced insulation, pose a fire hazard.

In contrast, unfaced insulation materials like fiberglass and mineral wool are naturally fire-resistant.

Consider the fire resistance properties of the insulation material when choosing between faced and unfaced options.

Safest: Unfaced insulation


Unfaced insulation lacks a vapor barrier, making it more susceptible to water damage.

Faced insulation, with its vapor barrier, is designed to prevent water from seeping into the insulation.

If moisture is a concern, faced insulation is the better choice.

Most water-resistant: Faced insulation

Ease of Installation

Both faced and unfaced insulation are relatively easy to install.

However, faced insulation is considered easier because the facing material adds stability to the batts during installation.

Unfaced insulation may tear more easily and require additional securing methods.

Easiest to install: Faced insulation

Ease of Repair

When it comes to repairing torn or damaged insulation, whether faced or unfaced, it’s best to rely on professionals who specialize in insulation repair.

They have the knowledge and expertise to handle the repairs effectively and ensure the insulation’s integrity.

Easiest to repair: Both require a professional


Since faced insulation has a vapor barrier, it requires less frequent maintenance compared to unfaced insulation.

Unfaced insulation should be checked regularly for gaps, cracks, and insulation levels, especially in areas with temperature fluctuations or high humidity.

Easiest to maintain: Faced insulation

Length of Life

The lifespan of insulation, whether faced or unfaced, depends on various factors such as the material used and environmental conditions.

Fiberglass insulation, whether faced or unfaced, can last up to 100 years, while other materials may have shorter lifespans.

Longest lifespan: Tie


When choosing between faced and unfaced insulation, consider your specific needs, the application area, and factors such as moisture levels, cost, and fire resistance.

Faced insulation is recommended for areas prone to moisture, while unfaced insulation is suitable for dry, interior locations.

Faced insulation offers protection against moisture and better durability, but it comes at a higher cost.

Unfaced insulation provides soundproofing benefits, cost-friendliness, and layering capabilities, but lacks moisture resistance.

Ultimately, the choice between faced and unfaced insulation depends on the unique requirements of your home and personal preferences.

By understanding the differences and weighing the pros and cons, you can make an informed decision to ensure your home remains comfortable and energy-efficient for years to come.

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