Insulation input length and width of area to be insulated.
How to measure for insulation in attic.
The thickness of the attic insulation depends on the value of heat transfer coefficient u.
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.
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.
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.
Extra areas to consider.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Purios e which should be covered with attic is at least 21 cm.
Its value is currently 0 18 w m 2 k therefore the thickness of the open cell pur foam layer e g.
Determining the attic footprint.
How to measure your attic choose an install method first.