Over a 5 year span, attic insulation can settle as much as 20%, significantly reducing the insulation performance.
Insulation performance is measured by R-value — its ability to resist heat flow. Higher R-values mean more insulating power. R-49 is the recommended level of insulation for homes located in the Midwest. That is about 18 inches of insulation (most homes only have around 6 inches of insulation). Insulation works best when air is not moving through or around it. So it is very important to seal air leaks before installing insulation to ensure that you get the best performance.
If you would like more information about insulation or to have a Home Performance Evaluation, give us a call at 913-383-2222