Roger writes from San Mateo, California: "I currently have 2"-3" of loose insulation in my attic. I understand it is best to add loose, instead of rolled, insulation on top of this. Is this correct? Also, is there a store that rents the AttiCat system near me?"

Answer: Yes this is true. Using additional blown in will reduce loss of R-value by limiting compression. AttiCat® system locations can now be found on our website at http://insulation.owenscorning.com/homeowners/get-insulation/. Simply key in a Zip Code and a list of insulation dealers in the area will be displayed. Look for the location with an AttiCat® system logo next to the name of the store.

Unfortunately, using the Zip Code provided, I do not see any locations at this time.