Unfaced Fibreglass - Canada

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For effective management of heat flow and unwanted noise, Johns Manville Unfaced batts provide heat control from the exterior while effectively controlling noise in interior walls

Johns Manville Formaldehyde-free™ Unfaced thermal and acoustical insulation offers up to RSI 7.0 (R-50), and is offered in precut batts to fit standard wall cavities. Unfaced insulation reduces sound transmission through walls, ceilings and floors, and can be used in a variety of wood frame, engineered wood and steel frame construction applications, including new construction and retrofit.

UF_R19_23B_U1332_PROD_FPO 142x87


Thermally Efficient: Effective resistance to heat transfer, with RSI/R-values up to RSI 4.9 (R-28) for wood stud and RSI 7.0 (R-50) for metal stud.
Formaldehyde-free: Will not off-gas formaldehyde in the indoor environment.
Sound Control: Reduces sound transmission through exterior and interior walls, floor and ceiling assemblies.
Fire-Resistant: Flame Spread of 10 or less and Smoke Developed of 50 or less.
Resilient Inorganic Glass: No rotting, mildew or deterioration. Also noncorrosive to pipes, wiring and metal studs.
Superior Performance: Stable bonded glass fibres will not slump within the wall cavity, settle or break down during normal applications.

  Standard for Mineral Fibre Thermal Insulation for
  CCMC Evaluation Listing   CAN/ULC-S702.1   12276-L
  Flame Spread   CAN/ULC-S102   ≤ 25
  Smoke Development   CAN/ULC-S102   ≤ 50
  Corrosiveness   ASTM 665   Pass
  Fungi Resistance   ASTM G21, ASTM C1388   Pass
  VOC Emission   ASTM D5116   Pass, EcoLogo
  Thermal Transmission Properties   ASTM C518   Tested
  Smoulder Resistance   CAN/ULC S129   Pass
  Non-Combustable   CAN/ULC S114   Pass

Data Sheet

Unfaced Fibreglass Data Sheet
Unfaced Fibreglass Data Sheet (FR)


Unfaced Fibreglass SDS
Unfaced Fibreglass SDS (FR)



Product Selector Guide
Product Selector Guide (FR)


Energy Star Installation Instructions for JM Batts & Rolls Fibreglass Insulation


CCMC 12276-L



JM Fibreglass Video

JM Insulation Overview Video - Canada

JM Fibreglass Video - French

JM Overview Video - Canada - French

Available Documents