Vert Isolation Inc.

Blown Cellulose (Igloo Cellulose)

Natural Thermal and Acoustic Insulation for Your Building

A well-insulated building is also a quiet building. Cellulose insulation in Montreal with the Igloo Cellulose system delivers thermal and acoustic performance that has been recognized for over 40 years. Vert Isolation Inc. applies this product in attics, walls, and floors for property owners and contractors in the region.

Insulation that fills every cavity 100%, with no thermal bridging.

We assess your needs and propose the right solution.

The Igloo Cellulose System: Proven Insulation for Over 40 Years

Igloo Cellulose Inc. has been manufacturing cellulose insulation in Dorval, Quebec, for over 45 years. The product is made of 85% recycled fibres from the paper industry, processed by mechanical shredding without water or combustion. Fire-retardant salts are added for fire resistance.



Cellulose is blown into attics or injected at high density into walls, ceilings, and floors. Estimated service life: 75 years or more, with no loss of performance.

Technical Properties

  • Insulating value of R-3.71 per inch, tested to the ULC S703-09, ASTM C 177, and ASTM C 518 standards
  • Blown application ensuring uniform density and 100% cavity fill
  • Thermal lag nearly 3 times greater than that of mineral wool: heat takes more than 10 hours to pass through a cellulose-insulated attic, compared with about 5 hours with fibreglass
  • Hygroscopic capacity: absorbs up to 15% of its weight in water with no loss of thermal or acoustic performance
  • Inhospitable to vermin and rodents thanks to the boron salt used as a natural repellent
  • Fire resistance improved by the fire-retardant salts added during manufacturing
  • GREENGUARD and ISO 9001 certified

A Product Made in Quebec

Igloo Cellulose Inc. is part of the Iso Green group, a global manufacturer with plants in Canada, the United States, France, and Spain. The product used by Vert Isolation Inc. is made in Dorval, ensuring a reliable supply and compliance with Canadian standards.



Igloo cellulose is made of recycled paper and its manufacturing uses little energy, but its primary value remains its thermal and acoustic performance, its value for money, and its durability.

Where and When to Use Blown Cellulose

Attic and Roof Space Insulation

The main application for blown cellulose. The product fills every space uniformly, including the areas around joists, wires, and plumbing that insulation batts can’t reach.



For property owners in Montreal and Saint-Jean-sur-Richelieu, it’s often the first investment to consider: the roof is where heat loss is greatest.

Soundproofing Walls and Floors

Injected at high density into interior walls and floors, Igloo cellulose absorbs airborne noise thanks to its interlocking fibres. Installation density is adjusted to the desired acoustic level.



Particularly relevant for multi-unit buildings and office buildings, where noise between units affects occupant comfort.

Renovating Existing Buildings

Cellulose is injected into closed cavities without demolishing walls or ceilings. The installer drills small-diameter holes, injects at high density, then closes them up. An insulation upgrade without major work. This approach delivers a substantial energy gain at a reasonable cost.

New Residential and Commercial Construction

Cellulose is blown into attics and injected into walls before the drywall is installed. On sloped ceilings, it is stabilized by adding water at the time of blowing. For commercial and institutional buildings, it complements other insulation systems by filling hard-to-reach areas.

Cost-effective, high-performance insulation installed by a certified team.

That’s exactly what we offer.