Hello everyone,good site.I own a flat roofed property built in 1942,with solid concrete floors.The roof is constructed of block and beam,with an asphalt finish,overlaid with insulation and some type of roofing felt.This is obviously causing problems with damp and water ingress.I intend to have a pitched roof installed,extending gable end brickwork vertically to meet the roofline.The roof to be supported by rsj:s across new built gable end walls.The question is,can I make a habitable room in new loft space?Other neighbours have fitted pitched roofs,but no-one has opened up access into roof space.Obviously I will have to consult an architect,structural engineer,submit plans etc.,but before I do so I would greatly appreciate your opinion,thanks in anticipation,Mike.