Drilling into concrete lintel

Discussion in 'Builders' Talk' started by Cadishead67, Feb 19, 2022.

  1. Cadishead67

    Cadishead67 Member

    Hi,

    I am putting up a false ceiling using 3"x2" timber. I have screwed the frame to the wall above the window. I have used 10 mm x 100 mm frame screws made by rawlplug. The rawlplug goes about 60 mm into the lintel. The screws are spaced out by about 600 mm.

    I have been reading that some people don't screw into lintels, others do. I need the support for the ceiling over this section. Are there any definitive rules about screwing into lintels like this? The lintel is 160 mm x 160 mm so it's quite thick.

    Best regards
     
  2. Jimbo

    Jimbo Screwfix Select

    Screw a wood trimer over it, and secure the new timber work to that. If you hit the rebar in the lintel when drilling in to the concrete lintel, its integrity will be compromised. If it is a lintel with two bars, depending on which way up the lintel it is laid the bars can be quite close to the surface.
     
  3. Bob Rathbone

    Bob Rathbone Screwfix Select

    If the re bars are at the top, the lintel is upside down!
     
  4. Jord86

    Jord86 Screwfix Select

    Put up a photo of the window area, fixing a couple of 10mm bolts and supporting a ceiling partly off a concrete lintel is a bit different to putting up a curtain rail.

    Doubt it would be changed at this stage o_O
     
  5. Cadishead67

    Cadishead67 Member

    Hi,

    The lintel sits above a kitchen window with a concrete slab on top of it. See pic:
    20220220_173310~2.jpg
    This slab is about 9.5 cm thick.

    Inside the kitchen looks like this above the window:
    20220220_171935~2.jpg 20220220_171937~2.jpg
    The bolts sit just under 10 cm from the underside of the slab.

    Above this I think that there is a lintel for the inner brick course. I have lifted the bedroom floor and I can see a lintel which is atleast 15 cm thick above the kitchen ceiling/under the bedroom floor. See pic:
    20220220_173010~2.jpg

    Finally, there is another exposed lintel above the kitchen door which is 16 cm thick. So if this window/bay lintel is the same, I suspect that I have drilled into something below the lintel (perhaps into the concrete slab). Here is a pic of the exposed door lintel:
    20220220_171946~2.jpg

    What are your thoughts? Do you think that this is safe?

    Best regards
     
  6. Jord86

    Jord86 Screwfix Select

    Bypass the lintel and support the timber from the ceiling/slab above.
     
  7. Cadishead67

    Cadishead67 Member

    Do you mean the way that it is now? I think the slab above is the lintel. I think that I might have inadvertently already missed the lintel. What are your thoughts?
     
  8. koolpc

    koolpc Super Member

    I wouldnt worry too much about it myself.
     

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