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.

Lay the radiant barrier foil loosely over the attic insulation. If you are using loose fill insulation use sheet metal or wire. 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. The pros charge 1 500 to 2 000 to do a 1 200 sq ft.

Measure the depth of your current insulation. Keep all insulation at least 3 inches away from recessed can lights unless they are rated ic insulated ceiling. 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.

Your insulation will have some peaks and valleys and this is desirable. It can be effectively blown over existing insulation and. 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.

A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. Loose fill or batt the common term for blanket insulation. If you do have insulation find out the type and compare it to industry standards.

Also when laying down additional insulation work from the perimeter toward the attic opening. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace. Batt and roll insulation and loose fill sometimes known as blown in insulation.

Calculate additional insulation needed. Foil radiant barrier does not cause moisture. For diy attic insulation you ve got two choices. When adding additional insulation you do not have to use the same type of insulation that currently exists in your.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. You can do it yourself for about 500. Loose fill insulation is great for installing in attics with very little headroom and multiple obstructions such as vents and cross beams. Do not press into the insulation.

Never lay insulation over recessed light fixtures or soffit vents. 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. How much does attic insulation cost.

There are two main types of insulation.