Glass Block Windows and Cold
I live in Michigan and have a cinderblock basement (1200 square feet), year round carpet over 1950's tile on the floor, three heat registers (outlets). I also have 7 windows all of which are glass block. The basement gets very cold during the winter and I'm wondering if the glass block windows are transferring the cold from the outside into my basement.
I've stuffed insulation all around the perimeter between the outer walls and joists. I've also checked for air leaks and found none. I'm wondering if I were to attach a sheet of plexiglass over the glass block window area, if it would warm things up a bit. It would sort of function like an inside storm glass/window. Any thoughts?
BTW, I can't put an auxillary heater down there for a couple more years due to the fact that my three year old boys play down there unsupervised at times. Too risky.