Do You Have To Replace Attic Insulation. Attic spaces have low hanging ceilings and flooring that s not the sturdiest. In a perfect world you d hire an energy auditor to tell you exactly how much protection you re getting from the few inches of attic insulation you may already have and to pinpoint things like air leaks that you can seal to make sure your insulation will do its job well. In that case you may need to replace insulation after the roofer removes the decking boards.
Attic floor insulation works as the main barrier to prevent heat from escaping when it spreads to the attic through a process called thermal flow. Mold can grow from the warm humid atmosphere in an attic causing hazardous air quality for.
Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.
So there s really no need to do anything to the insulation in your attic unless you have some sort of damage on your decking. If you have an older home chances are the attic insulation is the same insulation that was installed when the house was built. What to do if your insulation is bad. Your cavity insulation sits below that decking against your roof s studs and sheathing.
