Currently my husband and I are demolishing a 100 years old brick house to install insulation. So far we chipped off plaster and there are laths an inch off from the exterior wall. I am thinking of installing insulation on top of the laths in order to minimize garbage. Does having the laths benefit of keeping the mold free? Or just wasting space? If I decide to remove the laths, can I put insulation on the exterior brick wall directly? Please advice.