. Q. I hate to still keep you on the "cold roof" subject, but I want to make a cold roof on my 6,000 square foot Victorian 4-unit with 2 furnaces that are located in the attic. What can I do? K.C.

We'll help you work out what type of roof or loft insulation to go for, how much it will cost, if you can get it for free, and how much you could save on your energy bills. Insulating different areas ...