I installed a bike rack on the wall in our garage today, it has breeze block style concrete blocks.
There was already a screw in the wall from the previous owners, it was in the right location so I decided to use that as a starting point rather than drill another hole.
The rack went up and held the weight of the bikes but then I heard bits of the concrete block falling off the wall.
I quickly took the rack down to find concrete had fallen away around the initial screw that I used. Not sure what caused this but I can only suspect it was slightly damaged before I began and I didn't notice.
Attached are some pictures to help explain.
What are my options for filling this hole in, is there a concrete-esque polyfiller product on the market?
Can I continue to use this hole for the bike rack , perhaps with a longer screw? I'd like to avoid having to drill another four holes in a new space.
General question, I'm using 50mm screws albeit they are going through a fairly thick bike rack frame, should I be using longer screws?
Many thanks for any help and advice - typically thought it had gone far too well!!
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