Steel lintel: need mortar bedding?

Discussion in 'UK DIY' started by Lobster, Jul 26, 2006.

  1. Lobster

    Lobster Guest

    If I'm fitting a Catnic steel lintel into a new opening formed in a
    brick wall (over a new window), should the ends rest directly on the 6"
    of (flat) brick at either end, or on a bed of (stiff?) mortar placed on
    the brick first? Building Control will be inspecting so whatever else,
    it has to keep them happy!

    (I'm thinking now that I do need the mortar; just that I've already
    bought a made-to-measure window to fit a gap which I measured assuming
    no mortar bed... not a massive problem to resolve but if I don't need
    the mortar, no point in making extra work.)

    David
    Lobster, Jul 26, 2006
    #1
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  2. Lobster

    Guest

    Lobster wrote:
    > If I'm fitting a Catnic steel lintel into a new opening formed in a
    > brick wall (over a new window), should the ends rest directly on the 6"
    > of (flat) brick at either end, or on a bed of (stiff?) mortar placed on
    > the brick first? Building Control will be inspecting so whatever else,
    > it has to keep them happy!
    >
    > (I'm thinking now that I do need the mortar; just that I've already
    > bought a made-to-measure window to fit a gap which I measured assuming
    > no mortar bed... not a massive problem to resolve but if I don't need
    > the mortar, no point in making extra work.)
    >
    > David


    If you dont use a mortar bed, the whole weight rests on one or 2
    points, and brick failure is invited.

    NT
    , Jul 26, 2006
    #2
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  3. Lobster

    dg Guest

    Lobster wrote:
    > If I'm fitting a Catnic steel lintel into a new opening formed in a
    > brick wall (over a new window), should the ends rest directly on the 6"
    > of (flat) brick at either end, or on a bed of (stiff?) mortar placed on
    > the brick first? Building Control will be inspecting so whatever else,
    > it has to keep them happy!
    >
    > (I'm thinking now that I do need the mortar; just that I've already
    > bought a made-to-measure window to fit a gap which I measured assuming
    > no mortar bed... not a massive problem to resolve but if I don't need
    > the mortar, no point in making extra work.)
    >
    > David


    Lintels should rest on a solid mortar bed - albeit a thin one, and
    brick frogs should be filled.

    You may notice that the lintel profile at the bottom is not truly flat
    and is angled slightly from the centre towards the edges.

    In practice though, it makes little difference if you bed them or not.
    Bed it too high though, and the brick courses don't line through above
    the opening

    dg
    dg, Jul 26, 2006
    #3
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