Unfaced Batt Insulation | Fiberglass Insulation | Insulation Rolls

If you’re building new or upgrading existing cavities, unfaced batt insulation is the simple, cost-effective way to boost thermal performance and cut noise without adding a built-in vapor retarder. It friction-fits into standard stud, joist, and rafter bays for fast installs and consistent results across walls, floors, and ceilings.

At Roofing4US, you’ll find a broad range of unfaced batts from leading brands Knauf, Owens Corning, Johns Manville, and ROCKWOOL

What is unfaced batt insulation?

“Unfaced” means the batt has no Kraft paper or foil vapor retarder attached. That makes it ideal anywhere a separate vapor control layer is not required by code, or where you want maximum breathability and flexibility in mixed-climate assemblies. Unfaced batts are commonly made from fiberglass (soft, easy to cut) or mineral wool/stone wool (denser, naturally fire resistant). Roofing4US stocks both types in pre-cut lengths and widths for 16" and 24" on-center framing. 

Benefits of unfaced insulation batts 

• Energy Efficiency: High R-values (R8–R49) help maintain indoor comfort and reduce heating and cooling costs.
• Acoustic Control: Dense fibres absorb sound, reducing noise transfer between rooms and floors.
• Fire Resistance: Mineral-wool options are naturally non-combustible and add valuable fire protection.
• Easy to Handle: Pre-cut batts friction-fit between studs or joists for a quick, no-mess installation.
• Eco-Friendly Options: Brands like Knauf EcoBatt feature low-VOC binders for healthier indoor air.

Applications of unfaced batt insulation

• Exterior Walls & Attics: Use where you plan to add a separate vapour retarder or smart membrane.
• Interior Partitions: Perfect for bedrooms, offices, and media rooms where soundproofing matters.
• Floors & Ceilings: Adds thermal and acoustic performance between levels of a home or commercial space.
• Specialty Fire Assemblies: Mineral-wool batts suit curtain walls and fire-rated assemblies.

Installation Tips for fiberglass insulation Batts

• Air-seal First: Caulk gaps and penetrations before insulating.
• Friction-Fit, Don’t Compress: A snug fit maintains full R-value.
• Cut Cleanly: Use a sharp insulation knife and a straight edge for precise cuts.
• Protect Yourself: Wear gloves, eye protection, and a mask when handling batts.
• Maintain Ventilation: Use baffles to keep soffit and ridge vents clear in roof assemblies.

Why Choose Roofing4US

• Extensive Range: From budget-friendly fibreglass to premium mineral-wool boards, we stock R8 through R49 in multiple widths and lengths.
• Trusted Brands: Owens Corning, Knauf, Johns Manville, and ROCKWOOL—names professionals rely on.
• Expert Support: Our team can help with take-offs, code guidance, and product comparisons to ensure you get the right insulation the first time.