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How to fill large crack in brick work

Discussion in 'Building' started by Grantyy, 8 Nov 2020.

  1. Grantyy

    Grantyy

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    Hi, I want to know how i can fill the gap in pictures, would it be cement or a sand and cement mix, if so what ratio? Thanks

    This is the back garden wall, it's basically the back of my shed though the other 3 walls are not attached, i believe it was caused by plants forcing through, i have cut them back and just want a solution to repair the best way possible, i don't want to have it rebuilt as the wall seems solid aside from this large crack.

    Thanks

    [​IMG]
     
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  3. Grantyy

    Grantyy

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  4. KenGMac

    KenGMac

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    Grantyy, good evening.

    Is there a tree nearby? or was it simply years of large bushes or such.

    How much earth is this wall retaining[if any?]

    And is each side of the crack in the wall still in line with each other?

    Ken.
     
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  5. Grantyy

    Grantyy

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    Hi Ken, thanks for your help!

    There is no tree but there is a large rose bush in my garden in front of the shed and growing over the top of it, there were also bramble type weeds at one point but they have been cleared, the other side is the end of an alleyway and often used as a dumping ground but us that live that end clear it every so often.
    There is no earth retained by the wall
    The wall is in line with each other
     
  6. DiyNutJob

    DiyNutJob

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    The crack looks to be lifting from below, or sinking on one side of the crack. Filling is easy enough but it won't fix the underlying problem. 1:1 cement to sand is concrete. 1:3 cement to sand is the mortar between the bricks. So, it depends on how durable you want the filler to be. Whatever you choose, it will not prevent the crack expanding.
     
  7. tel765

    tel765

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    Clean the crack out and fill with semi-dry 3:1 S&C.
    The semi-dry mix will last for ? and then you will have to do it again.
    Do not use concrete.

    1:1 cement to sand is not concrete.
     
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  8. KenGMac

    KenGMac

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    Grantyy, good evening, again.

    Looks as if the left has area of wall has dropped [about???] 20 / 25.mm ?? if you look at the relavent levels of the bricks and paint line??

    Do you own the wall on the other side of the breeze block wall on the left of the image??

    If you can access the other side of this wall, what i would consider is to install 4 X 1.m long "Helifix" bars roughly equally spaced over the total height of the wall, as noted, install these bars on the other side of the wall because??? there will be a different colour of mortar pointing where these bars are installed, then fill with mortar as mentioned above.

    If you do not own the wall to the left behind the breeze block wall your neighbour will need to consent to any work???

    As for "Helifix" suggest you Google and have a look at "crack stitch systems" they are used extensively in the repair of Subsidence damage.

    Ken.
     
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  9. DIYnot Local

    DIYnot Local

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