hi people,my daughter has just moved into her first home (single mother 2 children) and money is very tight,attached to her home is a single garage which she would like to use as a dining room(the floor is block paving)...she has been told she would need to install a damproof course (which i would guess would cost a few thousand at least but im just guessing,is there any kind of alternative damproofing available that is easier and cheaper to do than a traditional damproof course i.e some kind of sealant or rubberised type of covering etc that she could then cover with underlay and carpet,we/she would really appreciate any and all advice. many thanks in advance.