I live in a block of council flats circa early '70s of concrete frame build. Ages ago i tried putting some blinds in one of the windows with my then non-sds hammer drill to no effect and reasoned that i might be hitting a steel lintel or especially dense area of reinforcement above the windows, i.e. a mini-beam/lintel. This was years ago and in the meantime i've gotten an SDS drill and had cause just now to drill the ceiling again. I thought i'd be a doddle this time i not only had the concrete busting new drill but wasnt even working in the window area.. i was trying to change a ceiling rose over for a new light fitting that needs 4 holes drilling... annnyyywaay..
no go.. no joy. punched loads of test holes and nothing goes more than a bit beyong plaster.. what gives? Even giving it welly all i get is a hot and blackened masonry bit. I tried it on the floor and can drill through that ok.. has anyone heard of anything like a steel plate being in such a ceiling? What can explain this impenetrable barrier?
no go.. no joy. punched loads of test holes and nothing goes more than a bit beyong plaster.. what gives? Even giving it welly all i get is a hot and blackened masonry bit. I tried it on the floor and can drill through that ok.. has anyone heard of anything like a steel plate being in such a ceiling? What can explain this impenetrable barrier?