Attic Insulation Over Do It

Foil radiant barrier does not cause moisture.

Attic insulation over do it.

Both can be added to uninsulated attics or layered over existing material. Also when laying down additional insulation work from the perimeter toward the attic opening. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace.

Calculate additional insulation needed. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. For diy attic insulation you ve got two choices. Determine if and where you already have insulation.

Measure the depth of your current insulation. You can do it yourself for about 500. If you are using loose fill insulation use sheet metal or wire. 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.

Never lay insulation over recessed light fixtures or soffit vents. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Lay the radiant barrier foil loosely over the attic insulation. Blown in insulation overview.

Batt and roll insulation and loose fill sometimes known as blown in insulation. There are two main types of insulation. See install batt and roll insulation for details. Keep all insulation at least 3 inches away from recessed can lights unless they are rated ic insulated ceiling.

If you do have insulation find out the type and compare it to industry standards. Your insulation will have some peaks and valleys and this is desirable. Add the right kind of insulation. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches.

Do not press into the insulation. 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. 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.

It can be effectively blown over existing insulation and. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. 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.