It seems we might get a grant to convert back boiler (not functioning and red tagged) with a combo boiler. Now the grant inspecter said by tthe look of the rads they would go too and all the pipes!.. just how destructive will this all be? im sort of thinking floor boards up walls with grooves cut in them etc... is that right? The curent pipes seem to run behind TandG panneling but would a new set run diferently?