" Insulating a roof on a house, if done properly, will achieve a U-value of no more than 0.16W/m2K. By comparison, you can expect a polycarbonate conservatory roof to have a U-value of 1.6W/m2K to ...

You usually don't have to search too hard to find a house being let down by an old-fashioned, leaky glazed add-on, but if you happen to be the owner of one, what can you do to modernise an old ...