Lintel will not let me drill into it

Discussion in 'Decorating and Painting' started by 50plusabit, 9 Nov 2008.

  1. 50plusabit

    50plusabit

    Joined:
    17 May 2008
    Messages:
    60
    Thanks Received:
    0
    Country:
    United Kingdom
    I have moved to a 1950/60 house and am trying to put up curtain poles. I have tried 3 different drills and even bought a special tipped drill bit especially for concrete and cement, but the drill goes in so far then stops, and starts to make a screaming sound. I managed to get a blind in the bathroom by attaching it just under the ceiling, fine in bathroom but not in bedrooms and lounge. What am I doing wrong?
     
  2. Sponsored Links
  3. roughcaster

    roughcaster

    Joined:
    2 Aug 2007
    Messages:
    4,752
    Thanks Received:
    638
    Location:
    Moray
    Country:
    United Kingdom
    Try an SDS drill and bit.

    Roughcaster.
     
  4. Peter1919

    Peter1919

    Joined:
    11 Nov 2008
    Messages:
    73
    Thanks Received:
    3
    Location:
    Leeds
    Country:
    United Kingdom
    What type of drill are you usings and what drill bit? You need to use a hammer drill with a masonary drill bit to drill inot the concrete or brick
     
  5. 50plusabit

    50plusabit

    Joined:
    17 May 2008
    Messages:
    60
    Thanks Received:
    0
    Country:
    United Kingdom
    Hi Peter
    I am using a corded drill with hammer action, and purchased a drill bit for concrete, and still no joy. Should I be up level with the drill and leaning on it? Might be im a woman with less strength ? It makes a terrible noise and sounds as if its screaming.
     
  6. Chud

    Chud

    Joined:
    6 Dec 2006
    Messages:
    737
    Thanks Received:
    60
    Location:
    Dorset
    Country:
    United Kingdom
    might not the screaming noise be caused by trying to go through a steel or rebar?
     
  7. Sponsored Links
  8. Hysteresis

    Hysteresis

    Joined:
    18 Feb 2007
    Messages:
    1,224
    Thanks Received:
    11
    Country:
    United Kingdom
    Many Lintels in the 50's were of re-enforced concrete construction. What may be happening is that you are getting through the concrete and then encountering a re-enforcing steel rod or bar. A masonry drill will not penetrate steel as it effectively has no cutting edge. The screaming noise you describe sounds very mush like you have indeed encountered a steel re-enforcing bar as that is exactly what happens when the masonry bit hits a steel rod, all you get is a friction scream.
    What I would try is when you hit the re-enforcing bar, change your drill bit to a HSS drill to get through the steel, then replace again to a masonry drill bit after you get through the steel. It is pretty obvious when you get through the steel as the feel of the drill changes substantialy. You will probably blunt the HSS drill as you hit the concrete but so what it can be sharpened easily again. I have successfully used this technique many times and achieved an excellent plug grip.
    Also remember you may hit a couple of steel bars depending on how deep you intend to drill.
     
  9. bengasman

    bengasman

    Joined:
    28 Jan 2005
    Messages:
    34,181
    Thanks Received:
    3,124
    Location:
    London
    Country:
    United Kingdom
    Only downside of that solution is that the lintel becomes UN-reinforced. Not recommended
     
  10. Hysteresis

    Hysteresis

    Joined:
    18 Feb 2007
    Messages:
    1,224
    Thanks Received:
    11
    Country:
    United Kingdom
    The Drilling through of ONE re-enforcing bar will make no difference what so ever to the overall strength of the lintel. These things were over engineered in the 50's and 60's, but even so, one re-enforcement bar will be insignificant to the overall performance of the lintel.
     
  11. 2scoops0406

    2scoops0406

    Joined:
    20 Jan 2004
    Messages:
    4,865
    Thanks Received:
    2
    Location:
    Buckinghamshire
    Country:
    United Kingdom
    This happens all the time in my place. Yep, follow the advice given, I would bet money on the fact that you've hit a rebar (steel) you can often see a glint from the metal if you shine a torch into the hole.

    Forget trying to get through it with a masonary drill, it ain't gonna happen. What I do is drill as far as I can into the lintel, as said, you can tell immediately when that as far a that's going to go, then I swap the masonary bit for a colbalt HSS bit, take the hammer action off, then slowly drill into the bar. Always worked so far, and the resulting fixture is very firm indeed. I really don't think you need to worry about damaging the integrity of the lintel.

    Also use really good quality bits, personally I use Dewalt Extreme 2 for masonary, then Cobalt HSS for the steel.
     
  12. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page