Blow-in Attic Insulation Explained

The attic space is typically the most poorly insulated area in a home, so attic insulation can significantly impact your energy bills. One of the ways to do this (attic insulation) is blow-in insulation.

Blow-in attic insulation is a popular choice for homeowners who want to decrease their heating and cooling costs. It’s also environmentally friendly since it doesn’t require any chemical foaming agents or toxic blowing agents. 

There are a few other attic insulation solutions that can be chosen, but this one is easy to install, and the attic space will stay warmer.

The Product Is Eco-Friendly And Economical

The cellulose used in blow-in insulation is made from recycled newspapers. It is processed into fluffy insulation and made into a fire and insect-resistant product by treating it with boric acid. The resulting cellulose product has a very excellent R rating.

Cellulose-based attic insulations come in two forms: blown-in or sprayed. In both cases, cellulose fills the spaces between studs and rafters as well as under roof sheathing and in attic floors when installed.

Blow-In Insulation Has A Quick Installation Process

Blow-in attic insulation consists of cellulose that is blown into different areas in a building and between studs, but is primarily used in incomplete attics. Cellulose contained in tightly packed bales or oversized bags is put into the blower. This process is usually done outdoors. It is then shredded by a machine before using a long flexible hose to channel and blow it into the attic space. Our experts at A1 Home Insulation can blow cellulose over your existing insulation, too, provided it is still in decent shape. 

After A1 Home Insulation experts are through with the insulation, the attic space will be warmer, and the amount of energy you use to heat or cool your home in the winter and summer months can significantly decrease. It’s a great way to save on heating and cooling costs – up to 40% – using cellulose-based attic insulation. 

The installation process does not begin with the blow-in insulation. Instead, our experts start with adequately sealing your attic space to maximize efficiency and minimize air loss. The sealing process might take a day. Once completed, the actual blown-in insulation process takes another day or less.


The cellulose-based blown-in insulation is very affordable and can be purchased from one of the over 60 standard cellulose manufacturers within the country. These manufacturers’ products align with the Federal Consumer Products Safety Commission standards for both safety and quality.

Besides being an affordable product, the long-term energy savings you will get from this one-time upgrade is well more than enough reason to invest in blown-in attic insulation.


Now Serving