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Mentor Window’s preferred material and method for insulating attics and walls is our blown in fiberglass insulation, it is cleaner than most insulations and does not lose its r-value over time. Because of the loose fill properties of blown in fiberglass, it is easier to achieve a uniform appearance and coverage in your attic. Fiberglass, as an existing wall method will not settle in the wall cavity.

We provide two blown in insulation materials, cellulose and fiberglass. Our blown in insulation is the most effective way to insulate your attic space or walls that have already been closed in with drywall.

By blowing insulation into your attic, you will improve your R-value and seal all the gaps (recessed light fixtures and gaps in the fiberglass batts, if they exist). Blown in insulation is just that, blown in. It is a very clean, quick process. We carry a 4" diameter hose into your attic and spray the entire attic space. 


In older homes before the 1960s, they usually have minimal or no insulation in the walls. This can be corrected; depending on the construction (plywood or vinyl siding) most insulation can be blown in from the exterior. We will fix the holes. The most effective way to insulate your attic and uninsulated walls is to use a blown in insulation. Blown in insulation improves the R-values in your uninsulated walls.

When deciding which insulation to go with, fiberglass or cellulose, remember that both are equally the same in cost, and they’re r-values are also the same. Cellulose, insulation is a smart way to go when you consider that it provides a green, efficient, non-toxic, affordable thermal solution.

Material In Cellulose

The reason cellulose is called green is that it is made of 80% post-consumer recycled newspaper with the fiber being chemically treated with non-toxic borate compounds. Creating a fire resistant product that resists insects and mold as well. About 10% of the homes, that are built use cellulose, and the Cellulose Insulation Manufacturers Association (CIMA) reports that insulating a 1500 ft house with cellulose insulation can recycle as much newspaper as what 1 person will use in 40 years. So if every new home built, were to be insulated with cellulose this would remove 3.2 million tons of newspaper from the waste dumps every year.

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