Would appreciate some advice on this one: I need to replace some floorboards in my house (1930's) The existing tongue and groove floorboards don't seem to be the same size (width) as ones currently available at Wickes, B&Q etc. but are the same thickness (18mm approx). The existing floorboards have small rectangular shaped pieces of rubber (about 3mm thick) between the underside of the floorboards and the top of the joists. I need to replace some isolated areas of the floorbords (varying shapes and sizes). Should I use new floorboards and cut one of them to suit the required width? Or should I consider using chipboard or other material? If using floorboards I was thinking of using strips of 3mm thick hardbord to replace the rubber strips. Any advice/comments greatly appreciated.