Johns Manville Unfaced Insulation R-19
Johns Manville is an American Insulation manufacturer. Johns Manville manufacture all different types of glasswool insulation for the residential and commercial sector. All of Johns Manville products are manufactured to the highest of standards with recycled glass products used during the manufacturing of there JM glasswool range, kraft and Unfaced.

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Johns Manville Unfaced Insulation R-19 | Unfaced Batts | Unfaced Fiberglass Insulation Batt

Johns Manville Unfaced Insulation R-19 category houses a versatile array of insulation products recognized for their top-notch quality and performance. Johns Manville, a trusted brand in the insulation sector, assures products that meet the standards of energy efficiency and durability. These insulations are specifically designed for an R-19 resistance value, making them an optimal choice for a variety of buildings and construction projects.

What is R-19 Unfaced Fiberglass Insulation Batts?

R-19 Unfaced Fiberglass Insulation is a high-performance thermal and acoustic barrier designed for use in wood or metal-framed walls, floors, attics, and ceilings. Unlike faced insulation, this product does not have a vapour retarder, making it a versatile option for areas where moisture control is not a primary concern. Manufactured using long-lasting glass fibers, it offers an insulation value of R-19 — ideal for 2x6 framing cavities — helping to improve indoor comfort and reduce heating and cooling costs.

Unfaced Fiberglass Insulation Batt for Wood Framing

These are specialized for all sizes in wood framing applications. Ideal for residential and commercial buildings, these are typically applied in walls, floors, and ceilings, providing effective thermal control and sound absorption, enhancing indoor comfort and energy efficiency.

Unfaced Fiberglass Insulation Batt for Steel Framing

This variety is tailored for all sizes in steel framing installations, apt for commercial or industrial buildings. It delivers excellent insulating properties, thermal resistance, and sound control, ensuring the building's interior is energy-efficient and noise is minimized.

Benefits of R-19 Unfaced Fiberglass Insulation

  • Excellent Thermal Resistance: With an R-value of 19, it helps maintain consistent indoor temperatures and boosts overall energy efficiency. Best for building insulation.
  • Sound Dampening Properties: Effectively reduces noise transmission between walls and floors, enhancing acoustic privacy in residential and commercial settings.
  • Formaldehyde-Free: Made with a bio-based binder and free from harsh chemicals, improving indoor air quality and supporting healthier living spaces.
  • Non-Combustible: Meets Class A fire ratings (ASTM E84), providing an added layer of safety in fire-prone areas.
  • Moisture & Mold Resistant: Inorganic glass fibres resist moisture, reducing the risk of mold growth and prolonging insulation performance.
  • Easy to Handle: Lightweight and flexible design ensures quick and easy installation with minimal gaps or compression.

Applications of R-19 Unfaced Batt Insulation

Unfaced batt insulation is suitable for a wide range of residential and commercial construction or renovation projects, including:

  • External and internal walls (2x6 construction)
  • Basement walls and crawl spaces
  • Attic knee walls and floors
  • Garage walls and ceilings
  • Commercial metal-framed partitions
  • Its versatility makes it ideal for both thermal and acoustic insulation needs.

Choosing the Right Unfaced Batts Insulation

Choosing the right unfaced batt insulation ensures your project meets performance goals for energy efficiency, acoustics, and comfort. Here's what to consider when selecting the right product:

  1. Understand Your Framing Dimensions

R-19 Unfaced Batts are ideal for 2x6 wood or steel framing.

Measure cavity depth and width (e.g., 16" or 24" on centre) to match batt size and ensure a snug fit without compression or gaps.

  1. Match the R-Value to Your Climate Zone

R-19 is commonly used in walls and floors in moderate climates or attics in warmer zones.

Refer to local building codes or ENERGY STAR climate zone maps for recommended R-values.

  1. Determine the Application Type

New construction: Easy to fit between studs or joists before drywall installation.

Retrofit projects: Look for batts that are easy to trim and install in open cavities.

Ideal for interior walls, floors between levels, basements, and unvented crawlspaces.

  1. Consider Acoustic Needs

Use unfaced batts where vapour control is not required but soundproofing is beneficial, such as in between rooms or office partitions.

  1. Fire Safety and Indoor Air Quality

Johns Manville batts meet ASTM E84 fire safety standards.

Prefer formaldehyde-free, GREENGUARD Gold certified options for healthier indoor environments.

  1. Faced vs. Unfaced?

Use unfaced batts when no vapour barrier is needed or where one is installed separately (e.g., with a vapour retarder membrane).

Suitable for multi-layer applications or when finishing spaces with air-sealed assemblies.

No Compromise on Quality – Unfaced Fiberglass Insulation Batt

When it comes to insulation, quality matters — and Johns Manville’s R-19 Unfaced Fiberglass Insulation does not cut corners. Every batt is engineered to deliver consistent R-value performance, with excellent dimensional stability and superior material integrity. Whether you're a professional contractor or a DIY homeowner, you can trust that this insulation delivers long-term value without compromising safety or efficiency.

Why Choose Johns Manville Batt Insulation?

Johns Manville fiberglass insulation is a trusted name in building materials, backed by over 160 years of industry leadership. Their insulation products are:

GREENGUARD Gold Certified for low emissions

SCS Certified for high recycled content

Manufactured with a commitment to innovation, safety, and sustainability

With Johns Manville, you're not just buying insulation — you're investing in proven performance and peace of mind.

Upgrade your wall insulation with Johns Manville R-19 unfaced fiberglass batt, a reliable choice for professionals and DIYers alike. This high-performance fiberglass batt is ideal for enhancing thermal efficiency and noise reduction in residential and commercial spaces. Whether you're insulating new walls or retrofitting existing ones, these unfaced rolls provide excellent coverage without the need for a built-in vapour barrier. At Insulation4US, we not only stock top-tier insulation fiberglass products but also offer all the essential insulation accessories, hardware, and tools needed for a smooth installation. Browse our store for premium insulation supplies and discover why Johns Manville remains a trusted name in insulation solutions.

Why Choose Insulation4US?

At Insulation4US, we go beyond just selling products. Here's why thousands trust us:

Wide Product Range – From top-tier brands like Johns Manville to insulation for every application.

Expert Support – Our knowledgeable team is ready to help with product selection and technical advice

Fast, Reliable Delivery – Prompt shipping across the US so your project stays on schedule

Competitive Prices – Quality products at prices that fit your budget with great reviews. 

With Insulation4US, you're choosing convenience, quality, and customer-first service every time.

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