Hi, I'm doing a kitchen modernisation in my ex-Council house which was built in 1947. Like a lot of houses of that age, the ground floor is bitumen/asphalt over a concrete screed. The bitumen is about 20 mm thick and, I believe, serves as moisture barrier as well as an 'appearance' finish. The floors are not level and have various cracks and dents. The kitchen units have adjustable legs so they aren't a problem but the built-under oven unit has two melamine chipboard sides which should rest on the floor for their whole length. To get the unit level as a try-out, I've had to put 15 mm of packing under the rear of each side-piece but that's no good long-term because the weight of the oven won't be uniformly distributed. I don't fancy tapered packing pieces (450 mm long) so I thought of levelling compound. I've browsed most of the relevant threads on this forum and found the link to RMC Biscem LF25 which looks promising. Please can anyone give me guide prices? My past efforts to find anyone who is really familiar with this sort of bitumen floor and its care and maintenance have been unsuccessful; I get the impression they've mostly all died off! I'd like to tap some know-how on this subject - I've got all sorts of repairs to do in the other ground floor rooms when I've finished the kitchen.