Attic Insulation Over Do It

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Attic insulation over do it.

It can be effectively blown over existing insulation and. Loose fill insulation is great for installing in attics with very little headroom and multiple obstructions such as vents and cross beams. How much does attic insulation cost. Blown in insulation overview.

The pros charge 1 500 to 2 000 to do a 1 200 sq ft. When adding additional insulation you do not have to use the same type of insulation that currently exists in your. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Lay the radiant barrier foil loosely over the attic insulation.

There are two main types of insulation. If you do have insulation find out the type and compare it to industry standards. Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of 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.

Never lay insulation over recessed light fixtures or soffit vents. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. 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. If you are using loose fill insulation use sheet metal or wire.

You can do it yourself for about 500. 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. Foil radiant barrier does not cause moisture.

Also when laying down additional insulation work from the perimeter toward the attic opening. The higher the r value the better the thermal performance of the insulation. Determine if and where you already have insulation. Batt and roll insulation and loose fill sometimes known as blown in insulation.

Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace. Measure the depth of your current insulation. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. Do not press into the insulation.

Ideally you want about 10 20 surface contact with the foil. Your insulation will have some peaks and valleys and this is desirable. See install batt and roll insulation for details. Both can be added to uninsulated attics or layered over existing material.

Loose fill or batt the common term for blanket insulation.