Adding Blown In Insulation To Attic

We are considering sealing our attic and adding loose fill blown in fiberglass insulation to the floor.

Adding blown in insulation to attic.

The pros charge 1 500 to 2 000 to do a 1 200 sq ft. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. In a word yes adding insulation to your attic will definitely make a difference. We ll assess the type of insulation you currently have and let you know if adding more insulation to your attic will help keep your home more comfortable.

We have ac equipment and ductwork in the attic so it needs to be accessed a few times a year at most. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. But make sure make sure make sure gene that you have enough attic ventilation. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment.

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Give our ambient edge experts a call at 888 247 7475 for an evaluation of your attic space. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. That s really critical because if the attic doesn t breathe that insulation will get humid and damp and not work very well.

Blowing attic insulation isn t hard but it s dusty sweaty work. The good news is that you can easily identify exfiltration points that need air sealing in the attic plane by lifting the fiberglass batts if they are. Blown in insulation overview. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.

The added cellulose although adding value thermally is still very vapor permeable and will quickly transport interior humidity via infiltration across the pressure plane into the attic space. If rafter vents are not installed the new blown in insulation will restrict air flow from the soffit vents to the roof vents and as a result the attic space will heat up. When adding additional insulation you do not have to use the same type of insulation that currently exists in your. The attic walls and flooring are unfinished.

In the warmer summer months proper attic ventilation keeps the temperature within the attic space lower. Add the right kind of insulation. Most attics are insulated with blown in loose cellulose r 3 5 per inch blown in loose fiberglass r 2 5 per inch or fiberglass batts r 3 2 per inch. You can do it yourself for about 500.