Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value.
Roof ceiling insulation.
The standard width for joists is 24 inches.
Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.
Set up a stepladder tall enough to work comfortably from.
Advantages of insulating the.
Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.
Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow.
Measure the area needing insulation.
Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists.
Insulating the roof is a priority if the ceilings of your home happen to be part of the roof deck.
R 38 is the industry standard and the minimum thickness for r 38 is 12 inches.
If your current insulation is only five inches deep you will need to add seven inches of insulation to achieve the 12 inch r 38 rating.