Attic Insulation Material Ratings

Add insulation to attic.

Attic insulation material ratings. Measure the area needing insulation. In general an attic s r value should be between r 30 and r 49. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Existing 3 4 inches of insulation.

From schools to businesses to family homes our insulation works everywhere. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Inspecting your attic insulation. 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.

Decide on the type of insulation to use. 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. Let s say the insulation you ve selected has an r value of three per inch. Existing 3 4 inches of insulation.

The main factors that impact the cost are. 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. Most homes have some old or existing attic insulation already in their attic. Cellulose insulation is calculated based on the depth of the blown in insulation.

In particularly cold climates you might go up to r 60. Square footage of your attic. 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. Its expert engineering lets you create the most comfortable environment without compromising your design.

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. Measure the length and width of the area you need to insulate. Type and material of your insulation. Insulation our building science makes insulation br smarter.

Multiply the length times the width to determine the square footage of the space. Recommended insulation levels for retrofitting existing wood framed buildings. According to home advisor insulating your attic can cost between 1700 to 2100.