Hi, Im new to this forum. I have a problem with an existing flat roof extension. We have an extendion from our kitchen making a dining room. It was done long before we moved in, the extension is single skin, think what they did was use existing walls for outbuildings and joined them up and stuck in a patio door and then put a flat concrete roof on, the flat roof is the problem. There are no joists or anything, just a few inches thick re-enforced concrete roof with felt on top. Consequently the room is freezing and is permanently damp, the walls are ok but the ceiling is dripping with condensation and black with mould and damp. No matter how often we paint it or steet it with all sorts of anti mould treatments within weeks of painting it is black again and the paint is peeling.
So we need to insulate this roof somehow, the easiest option would be probably to add insulated plasterboard or similar to the inside, however the roof is fairly low and we dont want to lower it further even if its only a couple of inches. So this leaves us with the option of insulating the flat roof itself, This is where I need advice, im not a builder and dont have lots of cash so ideally would need a cheap and easy way to insulate the roof, any suggestions? Hopefully within the next 5 -10 years we will be demolishing this room and adding a 2 storey extension so im just after something that will last for that period of time.
Thanks in advance for any advice offered. :D