Attic Insulation Material Ratings

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Attic insulation material ratings.

Its expert engineering lets you create the most comfortable environment without compromising your design. Most homes have some old or existing attic insulation already in their attic. Existing 3 4 inches of insulation. Existing 3 4 inches of insulation.

Measure the length and width of the area you need to insulate. Decide on the type of insulation to use. Contractor or insulation installer s fee. Let s say the insulation you ve selected has an r value of three per inch.

Type and material of your insulation. 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. 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. Cellulose a fiber insulation material with a high recycled content is blown into a home attic.

Multiply the length times the width to determine the square footage of the space. Insulation our building science makes insulation br smarter. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. 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.

Recommended insulation levels for retrofitting existing wood framed buildings. According to home advisor insulating your attic can cost between 1700 to 2100. Inspecting your attic insulation. The main factors that impact the cost are.

Cellulose insulation is calculated based on the depth of the blown in insulation. Square footage of your attic. 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. In general an attic s r value should be between r 30 and r 49.

Add insulation to attic. From schools to businesses to family homes our insulation works everywhere. In particularly cold climates you might go up to r 60.