Determine Need For Attic Insulation

This calculator is to be used as an estimating tool only.

Determine need for attic insulation.

R value is a measure of insulation s ability to resist heat flow. Common signs of problems with insulation. To view the next video in this series click here. If you notice one or more of these occurring you probably need to take action.

Insulation levels are specified by r value. However there are a few easy things you can do to see if your attic is properly insulated. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Use unfaced insulation when adding more insulation to an attic that already has some insulation laying the rolls or batts at right angles to the floor joists. Loose fill insulation fibers are packaged in bags and blown in place to the desired depth and density using special. In particularly cold climates you might go up to r 60. In general an attic s r value should be between r 30 and r 49.

Input length and width of area to be insulated. According to the u s. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs. Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job.

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. Let s say the insulation you ve selected has an r value of three per inch and. The correct amount can help maintain a comfortable temperature and save money. There are four especially common signs of problems with attic insulation.

Inspecting your attic insulation will help you determine your insulation needs. A quick way to see if you need more insulation is to look across your attic floor. If you can t see the joists because the insulation is above them then you should measure the insulation depth with a ruler to see if you have enough. The higher the r value the better the thermal performance of the insulation.