I have a 1919 house in the midwest. I have a fair amount of attic insulation, about R-30-ish and some insulation in the exterior walls (plugs in the siding proves it). I think there's some voids in the wall insulation because some spots are colder than others. What are my best options here? I'm eventually going to have new siding put on, but I don't know if I'm ready for that expense yet. I realize spray foam is expensive, but it might be the only way to make the walls less cold and the house more comfortable without new siding. Question: would increasing my attic insulation to R-60 help keep the walls warmer? Would it be better to do that first? The expense for blowing in cellulose in my attic would be much cheaper and if I did it myself I think I could do it for less than $500. Square footage of my house isn't big. It's about 1200 and it's a one story.