I own a cape code house where the basement contains a furnace that provides steam to radiators on my first level. Two years ago, I finished off the attic area to make a bedroom and a local plumber ran a loop off the furnace that connects to a section of baseboard to be heated by hot water. Ever since this has been assembled, the baseboard section bangs like crazy when the upstairs is pulling the water through it. My question is, is this an acceptable design or is the design incorrectly setup as it should not use baseboard hotwater units to heat it? If it is not the correct design, what is the best and most economical means to heat the attic: steam radiators, electric radiators... etc?