Attic Insulation Over Do It

There are two main types of insulation.

Attic insulation over do it.

Determine if and where you already have insulation. Lay the radiant barrier foil loosely over the attic insulation. Loose fill insulation is great for installing in attics with very little headroom and multiple obstructions such as vents and cross beams. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

If you do have insulation find out the type and compare it to industry standards. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. You can do it yourself for about 500. 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.

Your insulation will have some peaks and valleys and this is desirable. Batt and roll insulation and loose fill sometimes known as blown in insulation. Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation. It can be effectively blown over existing insulation and.

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. 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.

Foil radiant barrier does not cause moisture. Measure the depth of your current insulation. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. The higher the r value the better the thermal performance of the insulation.

Add the right kind of insulation. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace. Loose fill or batt the common term for blanket insulation. Also when laying down additional insulation work from the perimeter toward the attic opening.

When adding additional insulation you do not have to use the same type of insulation that currently exists in your. Do not press into the insulation. For diy attic insulation you ve got two choices. How much does attic insulation cost.

See install batt and roll insulation for details. Ideally you want about 10 20 surface contact with the foil. A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a. Both can be added to uninsulated attics or layered over existing material.

Blown in insulation overview.