Attic Insulation Over Do It

How much does attic insulation cost.

Attic insulation over do it.

Loose fill or batt the common term for blanket insulation. See install batt and roll insulation for details. Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation. If you are using loose fill insulation use sheet metal or wire.

Batt and roll insulation and loose fill sometimes known as blown in insulation. Measure the depth of your current insulation. Calculate additional insulation needed. You can do it yourself for about 500.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. It can be effectively blown over existing insulation and. Ideally you want about 10 20 surface contact with the foil. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. Blown in insulation overview. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Keep all insulation at least 3 inches away from recessed can lights unless they are rated ic insulated ceiling.

For diy attic insulation you ve got two choices. A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a. Do not press into the insulation. When adding additional insulation you do not have to use the same type of insulation that currently exists in your.

Determine if and where you already have insulation. Believe it or not there are situations in a home when you should remove the old attic insulation before adding more over the existing and in this short video. Both can be added to uninsulated attics or layered over existing material. The higher the r value the better the thermal performance of the insulation.

Foil radiant barrier does not cause moisture. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace. Loose fill insulation is great for installing in attics with very little headroom and multiple obstructions such as vents and cross beams. Cellulose insulation has an average thermal value of r 3 7 so you d need just over five inches to equal an r 19 batt.

Add the right kind of insulation. Never lay insulation over recessed light fixtures or soffit vents. Also when laying down additional insulation work from the perimeter toward the attic opening. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches.

There are two main types of insulation.