Attic Insulation

The attic is often the most cost-effective place to add insulation. Usually, a contractor blows loose fill into and over the top of ceiling joists.

Check ceiling light fixtures and the tops of interior exhaust fans also, as these items should not be covered with insulation. The air barrier at the ceiling line must be tight to ensure that warm moist air from the home's walls do not penetrate the attic space. Plumbing stacks must also be inspected for air leakage.

Ensure that soffit venting is not blocked by added insulation; baffles may have to be installed.

Blown In Insulation is effective in reaching areas in attics, basements, nooks, and crannies.

Blown In Insulation is a common and effective method for insulating your home against heat loss. The entire goal of insulation is to guard against the loss of heat through cracks, spaces, and any kind of opening. Heat loss can cause drafts across the floor and throughout the entire home or building. Because heat moves from a warmer surface to a colder surface, heat loss causes discomfort as the heat moves from the human body to cooler wall surfaces. It causes condensation on interior surfaces, which then creates mold, mildew, and rust. And maybe worst of all, in these economically troubled times, heat loss means higher heating costs.

Even the best made homes will unfortunately suffer from air leakage. This can be greatly reduced with the proper insulation in your roof, walls, and even floor. For walls, many people like to use blown in insulation.

The purpose of blown in insulation is to reach areas in attics, basements, nooks, crannies, and particularly for retrofit situations that cannot be reached with batts or rolls.

For years we have recommended blown in cellulose insulation to clients who were looking for ways to keep their energy costs in check.

Cellulose insulation offers advantages over fiberglass insulation. We like the fact that cellulose can be installed in older homes that has no insulation in its walls.

It's also proven to be a fine application in new construction. Depending on the application, there are three common methods of installing cellulose. In older homes, a technique called dense packing is used. Holes are drilled in the walls either from the outside or inside and the insulation is blown in until it is tightly packed in the wall cavity. The approach used for new construction is referred to as wet spray. Water is added to the cellulose and blown into the open wall cavities.

The third technique is loose-fill, used for insulating attics. This is simply blowing dry cellulose into the attic area and filling the joist cavities. Cellulose has an R-value of R-3.6 per inch. I always liked the fact that blown in cellulose helps seal the house against air infiltration. Tests have proven that cellulose is more effective than fiberglass.

Because cellulose can absorb moisture, a vapor barrier should be considered. If enough moisture is allowed into the product the R-value can decrease.

Cellulose insulation also contains a fire retardant (boron). It is considered to be a green product, as it is made from recycled newspapers. 100 pounds of cellulose contains 80-85 lbs. of newsprint and the manufacturing process uses little energy to produce the product.

Always be sure to choose the right installer. Pick one who practices “building science”, also called the “whole house approach”. They’ll have the tools to test your home for air leakage and safety issues.

Since blown in cellulose has proven to be a very effective solution for energy efficiency and comfort, you owe it to yourself to call on Matrix Insulation today!

Matrix Insulation specializes in blown in cellulose, fibreglass and rockwool insulation as well as roof venting and attic ventilation.


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