Lintel load span tables

Lintel Load Span Tables: Quick Reference Guide

Andrew ALL, Concrete Lintels, Steel Lintels 52 Comments

Understanding lintel load span tables is important for specifying and selecting the correct lintel. If you are new to load span tables you may want to look at our blog post on load span tables for beginners.

Below is a quick reference guide to load span tables which you can use at your leisure. It is also available to download on our ‘downloads’ page.

Download the load span table reference guide

Comments 52

  1. I am about to install French doors 1.3m wide x 2.0m high. I was going to use a 1.5m 75mm thick concrete lintel to place above doors the house is an old terrace house 3 floors high with roof. Is this concrete lintel sufficient or do I need a thicker lintel ?

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  2. Hi I’m about to install bifold doors and my opening is 3.2m and it’s a terraced house my house is 4.5m long. The length from the roof to doors is 3m so the area that the lintel /beam will be supporting 12m2 including 2 windows can I just use a catnic or do I need a beam ?

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      Hi Ben, thanks for leaving a comment.
      Please don’t use a Catnic! I would suggest a beam, but I will get the technical team to come back to you.
      Thanks.

  3. I am knocking two rooms into one to make a kitchen diner, the beam required would be supporting first floor joists and the plaster board wall between bathroom and a bedroom. Please advise as what beam to use.

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  4. I am planning to extend across the whole of the back of a standard 1935 semi detached 3 bedroom house. The open span would be approximately 5 meters. Can this be achieved without a central support?

    John

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  5. Hello,
    I am creating a 1800mm wide opening in a single block interior wall which will be 1900mm high. The building is a bungalow with a bedroom above in the roof space. I would like to use a concrete lintel but I’m not sure of the thickness I will need 65mm or 140mm. Can you please advise me on this?
    Best Regards,
    John

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  6. Hi,
    I am intending to create an opening of 2500mm wide between my kitchen and conservatory. The kitchen is single storey structure with a pent concrete tiled roof. I would be grateful if you could you please guide me towards the type and size of lintel I should use?

    Best regards
    Terry

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  7. Hi,
    The structural engineer specify a UC lintel.
    However I can’t find a local supplier – I believe the Dim for that is 100 x 100 mm. ( I can be wrong)
    I would think a U2 would do – 150 x 100 mm
    Please advice

    Regards

    Dag Reppe

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  8. Good day,

    I am looking at installing a stacking door 3600mm x 2100mm high. It will have a masonry wall above the a hight of 700mm (cavity wall).

    Will fabricated lintels work at this span?

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  9. Hi,

    I’m looking to create an opening of up to 3,0 meters for a folding sliding door or similar, can I simply use a Catnic style lintel at 3,6 meters long?

    The house type is a semi-detached townhouse (3 storeys), there’s approximately 23m² of brick and block work (minus 4x windows) above and so the lintel will be installed on a load bearing wall but not taking loading from joists.

    Thanks in advance!

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      Hi Alex, thanks for leaving a question. The technical team are preparing a response for you now.
      Thanks, Andrew

  10. Hi
    I am installing a 3200 mm wide bifold I have two courses of bricks above then a flat roof would a 3.6 catnic lintel be strong enough or would I need a beam .
    Thanks joe

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  11. Hi. I’m looking to make 2 rooms into 1. The wall is a supporting wall for joists upstairs floor and a plaster board wall. There is 2 bedrooms above the wall. I will need a 2500 long beam to span including the 150mm each end. But which beam would I use. Cheers

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  12. Hi I am installing a new set of french doors 1400 wide in the external wall of a victorian terrace house.
    The wall is double thickness solid brick and the wall above to rafters is approximately 3m
    The roof is a standard terrace house pitch with concrete tiles loading the rafters onto the wall above the french doors
    I am thinking of using standard prestressed concrete lintels of 1800mm width (nearest size up) – 2 of them side by side
    Is this the best way to go?

    Also I am removing 1.6 meters of the internal wall between the lounge and kitchen and need to install a lintel/steel above to support the brick wall above and the bedroom ceiling rafters and the kitchen/loungs floor joists – this seems to be too big a span for a concrete lintel – well cetainly one that will fit in a single skin brick wall – so using a steel how do I calculate the size of the steel required please.

    Regards
    Mark Watson

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  13. I am looking at removing a 12FT wall which is load bearing located downstairs and it appears to hold the joices upstairs also but not the celing.

    House is 1974 build 4 bed detached.

    Looking at having the opening as wide as possible could you let me know the beam that would provide this current thickness of the wall is 9CM in total width.

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  14. Hi

    I’m looking to make 2 rooms into 1 (kitchen and dining room). The wall is a supporting wall for joists upstairs floor and is brick all the way up to the attic. I will need between a 2500 and 2700 long beam to span including the 150mm each end. But which beam would I use.

    Thanks

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  15. I am moving house soon and am wanting to knock down a wall between the living room and dining room and move the wall back around 3ft, the wall is a load bearing wall and I am eventually looking to add a bedroom into the attic and need to know if that will effect the lintel I will need.

    would I need a specialist lintel or would a concrete linted bear the load?

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  16. Hi I need a lintel for a 5000mm opening on a 6600mm garage. Double skinned brick and block with a 100mm cavity. 35° pitched tiled roof with gable above opening.

  17. Hi I am installing bifold doors over a 2.7m width. Are concrete lintels sufficient to use. Above the bifold are a bedroom and a pitched roof.
    Thank you.

  18. Hi, I’m wanting to remove the wall between my kitchen and dining room. The opening span is 2870 plus 150 support either end giving 3170mm. The wall is single skin and takes the floor joists of one room above, the other room above the joints run with the wall and there isn’t a wall above. Can you please advise on what type of lintel to use.

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  19. Hi Im making some patio doors bigger from 1m to 2.7m
    I’ll be installing a 3m lintel
    The house is a normal 2 storey building
    will two 4×3 concrete lintels be sufficient enough
    Thanks

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  20. Hi I want to knock through my kitchen into the outrigger at ground floor only. The wall to be taken out was previously an external wall and has a doorway in it. I am looking to increase the clear opening from 700mm to 2000mm. House is 1906 semi detached, solid brick construction. Can send images and sketch to help explain.

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  21. Hi,
    I want to knock through my kitchen into adjoining store room. It’s a bungalow and the wall to be taken out is a cavity wall where the roof slopes down over finishing on the single skinned store wall.
    The ceiling joist? / wall plate is on the internal block wall of the cavity (doesn’t tough outer skin brick part)
    I’m looking to increase the clear opening from 880mm (current back door) to 2500mm. Can send images and sketch to help explain.

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  22. Hi, I am looking at installing a 840mm door within my garage to create a basement area (That is currently un-accessible) due to the house being built on top of the garage, there are two storeys above the garage and it is a new build so two walls with a cavity to knock through can this be done with a standard concrete lintel 100×100 – 1500mm long or do i need to ensure the house is supported by placing a larger lintel in. I would rather have something i know is over the top than only just enough (Belt and braces) also would this need two lintels 1 for each brick layer?

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      Hi Matthew,
      Can I ask for a bit more information please, we would need
      The size of the opening
      The wall construction
      The height and type of masonry above the opening
      If there is 600mm of masonry either side of the opening
      If there are any floor joists bearing onto the lintel and the span of the joists
      If there are any roof trusses bearing onto the lintel and the span of the trusses

      Any drawings you have would be useful as well. Please email technical@stressline.net, and we will help as best we can.
      Thank you,

  23. I am about to install French doors 6ft wide x 2.1m high, at the side of the house on the ground floor. I have been quoted for the job and it includes catnic lintel to place above doors. The house is a 1970 terrace house 3 floors high with roof. Is a catnic lintel sufficient or do I need a steel beam ?
    Many Thanks.

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  24. 1 have an internal wall – 100mm dense concrete block with a single door. I want to increase the door width to 1600mm. The wall is load-bearing supporting two bedrooms floors each side of the wall (The joists stop at the wall for each bedroom). The joists 195x50mm and are at 450mm centres. The bedrooms timber joist span for 4m for each bedroom. What is the recommended thickness concrete lintel do I need to install.

    Thanks

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  25. HI, I am widening an existing opening between my kitchen and utility room. This was originally our exterior wall with inside skin of blockwork and external skin of brick. The current opening is 1.1m and I am widening it to 1.5m. I planned to install 2 no 1.8m x 150mm x 140mm concrete lintels side by side, one for internal skin and one for external skin.
    Above this opening there is 1.2m high of blockwork with a 1m wide window above that and this goes tight to the eaves of the house.
    Are the lintels I am planning to use ideal for the job?

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  26. Hi. We are about to install a window in our kitchen diner which is 2.7 m wide by 1m high. It is wider but a lot shorter than the one we are taking out. We want to breeze block up the excess. An engineer suggested that we would need engineering brick pillars, padstones and 2 steels bolted together across the cavity. However he said this when he thought the window was going to be 3.8m wide. Would it still be necessary to use steels in view of the reduced window width, taking into account that above the window there is just one other window and some wall above and below it, (and the floor joists) and we know there is a lintel above the top window, a lintel above the existing window and the 6×4 pair of lintel we plan to install. Do you think that would be ok.

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