Simply take your ruler and push it down through or next to.
How do you measure attic insulation.
Firstly perform a visual inspection of your attic space.
If you can see your rim joists in the attic it s time to add some insulation.
4 read the measurement where.
However if you can t see the joists because insulation is above them you should move to the next step of measuring the r value between two joists.
Repeat the first step at several different spots in your attic.
Measuring attic insulation one easy way to tell if you need more insulation is by looking across the span of your attic.
You determine this by multiplying the length x width of the space.
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.
Extend a tape measure into a joist bay the insulated space between two joists.
Push the tape all the way down until it meets resistance when it contacts the drywall.
If you see that your insulation is level with or below the top of your floor joists you do not have enough insulation.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Your insulation levels should be well above the rim joists.
This calculator is to be used as an estimating tool only.
It s important that your.
For example if you attic floor area is 30 x 50 then you re measuring 1 500 sq ft.
Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job.
To find the r value of the existing insulation in your attic multiply the number of inches of insulation by the r value for your particular type.
Take your ruler and push it down through your insulation.