Metal Building Insulation

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Metal Building Insulation

Fiber Glass Metal Building Insulation is a flexible blanket insulation furnished in unfaced rolls.  Its primary use is in exterior walls and standing seam roofing systems of pre-engineered metal buildings.  It is intended to be laminated with an appropriate vapor retarder facing suited to the specific job application.  In addition it can be used as an unfaced layer of insulation.
It is available for the US and Canadian markets.  For the US market, our products comply with the NAIMA 202-96® (Rev. 2000) Standard For Flexible Fiber Glass Insulation to be Laminated for use in Metal Buildings.
Metal Building Insulation improves the energy efficiency of the building, reduces transmission of exterior sound to the interior of the building and absorbs reverberating sounds within the building.
These insulation products may qualify for rebates and other incentives. For more information, visit for your area’s specific offers.

CertainTeed cares about the environment and Building Responsibly™, and for more than 100 years has maintained a commitment to provide sustainable, innovative solutions that improve energy efficiency and comfort. From production to product, CertainTeed's focus has been on minimizing its impact on the environment by reducing energy consumption, conserving renewable resources and lowering greenhouse gas emissions. And with our Sustainable Insulation® fiber glass products, the mission continues. Visit for more information or watch our YouTube video.

Applicable Standards:
Model Building Codes: ICC

Material Standards:
  • ASTM C991 Type I
  • NAIMA 202-96 (Rev. 2000)

Fire Resistance:
Fire Hazard Classification:
  • UL 723, ASTM E84, NFPA 255
  • Max. Flame Spread Index: 25
  • Max. Smoke Developed Index: 50
  • CAN/ULC-S102-M88

  • ASTM E136, Meets requirements

Physical/Chemical Properties:
Thermal Resistance:
  • ASTM C518 and/or ASTM C177 at 75°F (24°C) mean temperature.

Acoustical Performance:
  • See specification sheet.

Water Vapor Sorption:
  • ASTM C1104: No greater than 5.0% by weight.

  • ASTM C665: Meets requirements for steel, copper and aluminum.

Odor Emission:
  • ASTM C1304: Pass

Fungi Resistance:
  • ASTM C1104: Pass Test

The vapor retarder on Metal Building Insulation 202-96 should be installed towards the conditioned spaces in the building. The insulation is normally applied over or between the structural members of the building and held in place by the covering sheets or insulation support system. When using high R-value systems, it is recommended that the cavity between the exterior metal sheet and the faced fiber glass insulation should be completely filled.
CertainTeed insulation products improve building energy efficiency and reduce building energy consumption for the life of the structure. As a result, they help conserve nonrenewable energy sources, decrease dependence on foreign oil and lower greenhouse gas emissions. In addition, the recycled content of CertainTeed fiber glass insulation is currently 30-35% and exceeds the EPA Recovered Material Guideline for fiber glass products, consisting of pre-consumer and post-consumer glass cullet.

Most CertainTeed fiber glass insulation products have been certified by the GREENGUARD Environmental Institute and meet the GREENGUARD standards for low Volatile Organic Compound (VOC) emissions, including formaldehyde.