Also called blown-in fiberglass, a qualified insulation contractor can use net-in blow to provide a tight, well-insulated compartment. It is excellent for attic insulation, cathedral ceilings, floors and other closed cavities and irregular spaces. A proper install will prevent settling and maintain your R-value, which is limited by the size of the wall studs. Since it is blown in, it does not leave any gaps to allow heat loss or air infiltration, often making it a better choice than fiberglass batts. Proper installation requires a professional team. M&M Insulation are your Minnesota experts at blown attic insulation.


It sometimes surprises homeowners that ‘net-in’ really means a netting is used. Loose-fill fiberglass insulation is blown behind a special net-like material, which holds the loose-fill in place. Like fiberglass batts, the loose fill is glass fibers and binding agents. Unlike fiberglass batts, net-in blow provides very high R-values. The net-in method is compacted at a high density, preventing settling and maintaining the R-value for a lifetime.

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The major benefits of blown attic insulation are:

  • Minimized air infiltration and heat escape
  • Increased energy efficiency
  • Sound dampening
  • High R-values
  • Inert, non-corrosive and safe around electrical and plumbing
  • Does not settle
  • Moisture resistant and does not support mold or fungus growth
  • Non-combustible and fire-resistant
  • Pest-resistant
  • Lower energy bills and carbon footprint
  • Environmentally friendly and uses recycled materials
  • Reduces wear and tear on your heating and cooling systems
  • Quick installation

Blown-in insulation can also be used by blowing the loose-fill directly onto any flat surface or cavity and is commonly seen blown into attics this way.



Blown-In Insulation in the Twin Cities Area

Since 2002, M&M Insulation has built a reputation for quality products, professional workmanship and exceptional service. We can install net-in blow or blown-in insulation in new construction, renovations and we can add additional attic insulation to increase your R-value. Our installation team is second to none, and we look forward to exceeding your expectations. Contact us today at 952-240-6057 to discuss how blown attic insulation can improve your home’s energy efficiency.