Attic Insulation Over Do It

There are two main types of insulation.

Attic insulation over do it.

If you are using loose fill insulation use sheet metal or wire. You can do it yourself for about 500. See install batt and roll insulation for details. It can be effectively blown over existing insulation and.

Both can be added to uninsulated attics or layered over existing material. How much does attic insulation cost. Blown in insulation overview. 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.

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Calculate additional insulation needed. Add the right kind of insulation. For diy attic insulation you ve got two choices.

Never lay insulation over recessed light fixtures or soffit vents. Determine if and where you already have insulation. Lay the radiant barrier foil loosely over the attic insulation. A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a.

Ideally you want about 10 20 surface contact with the foil. 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. If you do have insulation find out the type and compare it to industry standards. Keep all insulation at least 3 inches away from recessed can lights unless they are rated ic insulated ceiling.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Do not press into the insulation. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace.

Foil radiant barrier does not cause moisture. The higher the r value the better the thermal performance of the insulation. Measure the depth of your current insulation. Loose fill insulation is great for installing in attics with very little headroom and multiple obstructions such as vents and cross beams.

Loose fill or batt the common term for blanket insulation. When adding additional insulation you do not have to use the same type of insulation that currently exists in your. Batt and roll insulation and loose fill sometimes known as blown in insulation. Your insulation will have some peaks and valleys and this is desirable.

R 38 is the industry standard and the minimum thickness for r 38 is 12 inches.