Metal Building Insulation

Insulation systems for metal buildings are considered a critical building component in today’s construction. Mineral fiber (fiberglass, rock wool, and slag wool) metal building insulation is different than the traditional building insulation product, in that

  • it’s manufactured in lengths and widths to match the widths and span of metal girts and purlins; and
  • it’s engineered to meet the unique thermal and acoustical requirements for metal.

Where is it used?

Mineral fiber metal building insulation is used to insulate exterior walls and roofing systems of metal buildings. It is also used as an additional layer of insulation in metal re-roof applications, on built-up roofs, and singly-ply roofs typically used on commercial buildings.

Insulation benefits in metal buildings

  • Controls heat flow: to regulate the rate of heat transfer throughout the building and reduce energy consumption
  • Controls condensation: on interior building surfaces, when properly installed with suitable air barriers and vapour retarders
  • Controls noise: by preventing transmission of exterior sounds and absorbing reverberating interior sounds. Cavities between metal structures will act as sound channels—much less so if filled with insulation
  • Increases lighting efficiency: when laminated insulation facing is used for walls and ceilings, it reflects light
  • Livability after a power outage: filled cavities greatly restrict air flow, which slows building cooling
  • Peak load reduction: like all buildings, good thermal insulation and air sealing will reduce summer air conditioning power needs—an emerging target for regulators (e.g., Ontario Building Code SB-10)