Formaldehyde-Free Fiberglass Insulation Products

Johns Manville offers a complete line of certified formaldehyde-free™ fiberglass building insulation produced in Winder, Georgia. Their lineup goes beyond standard FSK-25 faced/kraft and unfaced batts to include specialty options that deliver comfort, energy savings, and clean indoor air.

Why Formaldehyde-Free Matters

• Healthier indoor air: no added formaldehyde; low VOCs.
• Comfort + efficiency: consistent thermal performance and sound control.
• Sustainability: contributes to LEED IEQ credits for low-emitting materials.

Available Facings & Formats

• FSK-25 faced, kraft faced, and unfaced batts
• Standard and high-density options
• Blow-in and spray-in methods for attics, walls, and crawl spaces

See more fiberglass options in our fiberglass insulation collection or browse our full insulation category.

Application Benefits

• Energy efficiency: helps reduce heating/cooling loads and monthly bills.
• Comfort: fewer drafts, better temperature balance room-to-room.
• Noise control: improved acoustic performance in walls and ceilings.
• Durability: maintains R-value when properly installed.

Pro Tips for Best Results

• Air-seal around windows, doors, outlets, and penetrations before insulating.
• Choose the right R-value for your climate zone and cavity depth.
• Install batts snugly without compression; avoid gaps and voids.
• Maintain attic ventilation to manage moisture and prevent mold.

Get Started with D7 Supply

We stock a wide range of Johns Manville fiberglass insulation along with accessories for clean, efficient installs. Our team can help you choose the right product for your project—whether new construction or retrofit.

FAQs

Is Johns Manville insulation really formaldehyde-free?
Yes. JM’s formaldehyde-free™ products are designed for low VOCs and improved indoor air quality compared to traditional formulations.

What R-value should I choose?
Select R-values by climate zone and cavity depth (e.g., R-13 to R-21 for 2×4/2×6 walls; R-38+ for many attics). When in doubt, contact us and we’ll recommend options.

Can I DIY fiberglass insulation?
Walls and attics with standard cavities can be DIY-friendly. Use PPE (gloves, mask, goggles) and follow manufacturer instructions for cutting and fitting batts.