I'm trying to convert my loft into a clean, usable storage space and have begun boarding the floor. However, I live in a Victorian property which still has the original roof and no underfelt, so I get a lot of dust and dirt being blown into the roof void.
I don't want to go through the whole process of boarding the whole ceiling, so I want to put up some material that will prevent dirt getting in, but that will still allow adequate ventilation to prevent the build up of condensation.
Any ideas what I can use? Do I need to buy a breathable membrane, or will some simple weed control fabric stapled to the rafters do the trick?