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.
How to measure your attic for insulation.
Extend a tape measure into a joist bay the insulated space between two joists.
It s important that your.
Phone camera to remember and record your measurements so put on a dust mask and gloves and grab your measuring stick or tape and a phone camera.
This calculator is to be used as an estimating tool only.
Its value is currently 0 18 w m 2 k therefore the thickness of the open cell pur foam layer e g.
Repeat the first step at several different spots in your attic.
Push the tape all the way down until it meets resistance when it contacts the drywall.
4 read the measurement where.
Simply take your ruler and push it down through or next to.
Take your ruler and push it down through your insulation.
Once you have measured a few spots around the attic calculate the r value by multiplying the average depth of your insulation in inches by the r value for your particular insulation type.
Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job.
The thickness of the attic insulation depends on the value of heat transfer coefficient u.
Place your tape measure an inch down into the rough opening and measure to the top of your attic stairs this will give you the correct height of your attic stairs.
Now let s take a look at how to measure your attic s insulation regardless of type.
When you re blowing insulation it can get dusty and hard to see whether you ve got it deep enough around the entire attic.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Use a permanent marker to mark the level every few trusses so you know you have even coverage around the entire space.
With the attic stairs folded up in the closed position measure the height of the attic stairs to determine the attic cover with the correct height.