If home insulation is so great (and no argument that it is), why is my attic 90% air above about a foot of insulation? Why isn’t the insulation 2 or 3 or even 8 feet deep? It works to keep heat out just as much as it keeps heat in, right?
In: 1
Insulation is great, but there is diminishing returns. And insulation is not free. So at some point it is not worth adding more insulation. The heat is not going through the insulation you have so why spend money on more? Especially if you have areas with little or no insulation most of the heat will go through there. It is a waste of money to buy more insulation in your attic if most of the heat transfer is in the joint between the roof and walls.
Latest Answers