Attic Insulation Material Ratings

Add insulation to attic.

Attic insulation material ratings.

The main factors that impact the cost are. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Cellulose insulation is calculated based on the depth of the blown in insulation. Existing 3 4 inches of insulation.

Let s say the insulation you ve selected has an r value of three per inch. Multiply the length times the width to determine the square footage of the space. Most homes have some old or existing attic insulation already in their attic. According to home advisor insulating your attic can cost between 1700 to 2100.

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. In general an attic s r value should be between r 30 and r 49. Contractor or insulation installer s fee. If your current insulation is only five inches deep you will need to add seven inches of insulation to achieve the 12 inch r 38 rating.

Cellulose insulation manufacturers association insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils. The various performance levels r 19 r 30 and r 38 is all made from the same insulation material only the thickness of the insulation differs in order to achieve different r values and performance. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Its expert engineering lets you create the most comfortable environment without compromising your design.

Measure the area needing insulation. In particularly cold climates you might go up to r 60. Decide on the type of insulation to use. Existing 3 4 inches of insulation.

Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. Recommended insulation levels for retrofitting existing wood framed buildings. Measure the length and width of the area you need to insulate. Cellulose a fiber insulation material with a high recycled content is blown into a home attic.

Square footage of your attic. Insulation our building science makes insulation br smarter. Inspecting your attic insulation.