If you see that your insulation is level with or below the top of your floor joists you do not have enough insulation.
How do you measure attic insulation.
Firstly perform a visual inspection of your attic 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.
Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job.
It s important that your.
Repeat the first step at several different spots in your attic.
If you re laying the foil down on top of existing attic insulation on the attic floor then you just need to know the square footage of the attic area you re covering.
Measuring attic insulation one easy way to tell if you need more insulation is by looking across the span of your attic.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
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.
This calculator is to be used as an estimating tool only.
If you can see your rim joists in the attic it s time to add some insulation.
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.
4 read the measurement where.
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.
Input length and width of area to be insulated.
For example if you attic floor area is 30 x 50 then you re measuring 1 500 sq ft.
Now let s take a look at how to measure your attic s insulation regardless of type.
You determine this by multiplying the length x width of the space.