Insulation is cheap. 3" should be increased to 8-10". Probably unheard of over there but very common here.
Are the outside walls of the house beautiful? Can you add some foam insulation to the outside and reside it. It would make a lot of difference in heat/cool retention of the masonry.
Also, what colour is the roofing. If not a silvered colour consider painting it white.
Other than that, Jeff has the right idea. You can do a "pump and dump" if the humidity is OK.
|