Blown In, Cellulose Insulation

What are the Pros of Blown-In Insulation?

Blown-in cellulose insulation's main advantage is its adaptability to whatever form or obstruction it comes across in your walls or attics. In actuality, one of the few methods to increase insulation is to pump loose-fill insulation into completed walls. One possibility is to take off the drywall entirely, add insulation, and then put it back in place. This procedure could be costly.

In addition to being less costly than other forms of insulation, cellulose insulation nevertheless offers a very high R-value relative to its cost. A measure of insulating power is the R-value; the higher the number, the better the insulation.

Lastly, since cellulose insulation is composed mostly of recycled paper and wood, it complies with most green building certification requirements, making it a greener option to fiberglass or other forms of insulation. Whereas cellulose insulation is harmless and breaks down naturally, fiberglass insulation is also known to be uncomfortable and even dangerous to breathe in.

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Cons of Blown-In

The fact that cellulose packs down more readily than other types of insulation might be a problem given its tendency to take on any form or location. It is possible for insulation to compress or settle, creating gaps at the top of areas or decreasing its efficiency.

The fact that cellulose insulation takes a long time to dry out and collects all moisture in confined, insulated rooms is another significant drawback of the material. This moisture might lead to issues with mold and mildew. Wet insulation may be substantially less efficient and has a much lower R-value. Conditions that are damp and improperly sealed may make this a problem.

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Blown-In vs other types of insulation

One of the few ways to insulate walls that have previously been closed off without needing significant alteration is to use blown-in cellulose insulation. Installing roll or batt insulation is far simpler than removing all of the drywall, even if blown-in insulation still has to be patched and painted.

For open (unfinished) walls, other insulating techniques can be preferable. Fiberglass batts or roll insulation are two examples of these. One of the greatest choices is blown-in cellulose since attics have many obstacles and hard-to-reach places. In order to create a more complete and efficient insulated barrier for their houses, many homeowners mix batt and blown-in insulation in their attics.

Frequently Asked Questions

  • How effective is blown-in cellulose insulation in Denver’s cold winters and hot summers?

    Blown-in cellulose insulation is very effective in Denver’s variable climate. It provides excellent thermal resistance, filling gaps and voids in walls and attics to keep warm air inside during winter and hot air out during summer. This helps stabilize indoor temperatures, making it easier and more cost-effective to heat and cool your home.

  • What’s the difference between blown-in cellulose and fiberglass insulation, and which is better for Denver homes?

    Both types of insulation are effective, but blown-in cellulose is more eco-friendly, as it’s made from recycled materials. Cellulose is denser than fiberglass, which allows it to provide better soundproofing and fill small gaps more thoroughly. For Denver homeowners looking for an environmentally conscious option with great thermal and sound resistance, cellulose is a strong choice.

  • Is cellulose insulation safe for the environment and my family in Denver?

    Yes, cellulose insulation is environmentally friendly and safe for indoor use. It’s made from recycled paper treated with non-toxic fire retardants and insect repellents, making it safe for families and effective in Denver’s dry climate.

  • How long does blown-in cellulose insulation last, and does it require maintenance in Denver’s climate?

    Blown-in cellulose insulation is very durable, typically lasting 20–30 years or more. In Denver’s climate, it holds up well without needing frequent maintenance. Periodic inspections are beneficial to ensure it remains effective, especially after any major weather events.

  • Can blown-in insulation be installed in existing walls, and how does MTZ Insulation LLC handle that process?

    Yes, blown-in insulation can be installed in existing walls without extensive renovations. MTZ Insulation LLC drills small holes in the walls, through which the insulation is blown to fill the cavity completely. After installation, the holes are sealed, leaving your walls looking as they did before while boosting insulation performance.

Service Area

We Provide Insulation Services to all of Denver Metro and More

ALITTLETON, DENVER, CASTLE ROCK, BOULDER, LAKEWOOD, AURORA, COLORADO SPRINGS, FORT COLLINS, EVERGREEN, BROOMFIELD, CENTENNIAL, PARKER, ELIZABETH, FRANKTOWN, LARKSPUR, LOUVIERS, MONUMENT, PALMER LAKE, SEDALIA, USAF ACADEMY, WOODLAND PARK, COLORADO SPRINGS, LONE TREE, ENGLEWOOD, PARKER


Counties Served

DENVER, JEFFERSON, DOUGLAS, ELBERT, EL PASO, TELLER, ARAPAHOE



Zip Code

80123, 80128, 80226, 80227, 80232, 80235, 80236, 80104, 80107, 80108, 80109, 80116, 80118, 80125, 80131, 80132, 80133, 80135, 80840, 80863, 80921, 80120, 80121, 80122, 80124, 80126, 80129, 80130, 80110, 80113, 80208, 80209, 80210, 80219, 80223, 80111, 80112, 80134, 80138, 80237