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Due to the ongoing COVID pandemic, I decided to put a basketball hoop on one of our outside walls, so that me and my son can stretch a bit. The problem is that the wall I plan to put the basketball is built with hollow bricks, (see below).

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The thickness of the brick is close to 10cm. Additionnal specs :

  • the wall is getting its fair share or rain during autumn and winter and its facing the wind, so I want to make sure that no moisture will find its way in.

  • there may be some dunking (we are on average 100 kg each) involved so I need to make this as robust as possible.

I considered but I find them lacking :

  • screw plastic wall plugs

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  • screw anchors

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  • Toggle Bolts

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  • expansion anchors

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  • hollow wall anchors

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In most of the cases my main worry is that because the brick is hollow the won't find enough support. So, I wonder what is the best practice for this type of brick.

I would greatly appreciate any guidance on the matter.

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I'd recommend first making a hole to fill the channels in the brick with mortar/concrete locally. This way you will effectively have a solid brick which allows for a much stronger fastening and a much larger range of applicable anchors.

The anchors you show above are all mechanical anchors, which is not the optimal solution when a waterproof result is required. You could consider using a chemical anchor in the form of a threaded rod installed with an appropriate resin. (This will require filling the channels of the brick.)

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