The thickness of the attic insulation depends on the value of heat transfer coefficient u.
How to measure your attic for insulation.
Use a permanent marker to mark the level every few trusses so you know you have even coverage around the entire space.
Take your ruler and push it down through your insulation.
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.
Measure up from the drywall to mark your desired blown in insulation level.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Simply take your ruler and push it down through or next to.
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.
When you re blowing insulation it can get dusty and hard to see whether you ve got it deep enough around the entire attic.
Push the tape all the way down until it meets resistance when it contacts the drywall.
Purios e which should be covered with attic is at least 21 cm.
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.
Repeat the first step at several different spots in your attic.
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.
Now let s take a look at how to measure your attic s insulation regardless of type.
4 read the measurement where.
Its value is currently 0 18 w m 2 k therefore the thickness of the open cell pur foam layer e g.
Extend a tape measure into a joist bay the insulated space between two joists.
Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job.