There is an addition in the back of our 1928 house, we think added several decades ago, maybe 1950s. It was an amateur addition built on top of an existing open porch. The porch was never jacked up. It was added right on the natural slope of the porch. It now slopes about 3" off the level of the house. It is part of our eat in kitchen. Anyway, our heating bills during the winter have reached over $600 a month (with the thermostat at 64and a furnace installed in 2006) as we realized that beneath that addition, there is no insulation whatsoever. There is also really no foundation, just the original porch footers, and where there were openings beneath the porch, they simple put in some boards, that have been caulked a hundred times around, and are now decaying and splintering at the weight of the sinking footers, and offer no insualation whatsoever. It's like having a basement beneath that part of the house that has a bunch of wide open windows.
So, my question is what can be done...and at the least expense? Can we just leave the footers alone, since jacking up the back of the house 3" is not an option?...can't move the roof that much/ can't move the 2nd floor porch that sits on top of it all. simply just can't do it. maybe we can just brace the footers.
Can we just remove the boards in any case and fill in with masonry or some type of insulating concrete? This my only idea. Any reccomendations would be much appreciated.