Hello,
I've an awkward repair job to attempt:
Old metal fence post holders sitting on top of a cinder block wall which had been secured via rawl bolts have rusted away & require replacing.
The cinder blocks are about 4 inches wide but the holes that were drilled for the rawl bolts to keep the fence post holders in place are very close to the outside edges of the blocks & the original drilling, combined with the removal of the old rusted bolts has damaged the blocks (the latter could not be helped due to the poor condition around the drilled holes). Of the two blocks each with four holes drilled in them for the rawl bolts six of the drilled holes have partially crumbled to nothing & there's no block left on what is now the outside facing part of the block. However, the rest of the blocks to which the posts had been secured are in fine condition & aren't at risk of further disintegrating.
Can I fill the original drilled holes flush with the damaged cinder blocks & drill new holes in these fills so as to secure the new fence post holders (the job requires the replacement fence post holders to sit as close to the old ones as possible so as to reuse the original fence panels) or will the combination of drilling & post holder/post/fence panels load & stress on the new bolts (& it's Thunderbolts I'll be using to secure the post holders) & filled repair of the blocks mean it's just not possible & the blocks need replacing in their entirety?
Also due to the slight difference in the size of the fence post holders I've been able to get compared to the old ones (the old ones no longer being available) the new holes will not be directly in the same place on the blocks as the old, most will be overlapping with any fill & what's left of the block around them. I know this compounds the issue of ensuring the long term stability & security of the repair but is there any way I can do this job without having to remove & replace the damaged cinder blocks - perhaps by drilling pilot holes & gradually moving up through bit sizes until I reach the max size for the Thunderbolts - or is the replacement of the blocks & entirely new holes drilled in them the only option?
Thanks.
I've an awkward repair job to attempt:
Old metal fence post holders sitting on top of a cinder block wall which had been secured via rawl bolts have rusted away & require replacing.
The cinder blocks are about 4 inches wide but the holes that were drilled for the rawl bolts to keep the fence post holders in place are very close to the outside edges of the blocks & the original drilling, combined with the removal of the old rusted bolts has damaged the blocks (the latter could not be helped due to the poor condition around the drilled holes). Of the two blocks each with four holes drilled in them for the rawl bolts six of the drilled holes have partially crumbled to nothing & there's no block left on what is now the outside facing part of the block. However, the rest of the blocks to which the posts had been secured are in fine condition & aren't at risk of further disintegrating.
Can I fill the original drilled holes flush with the damaged cinder blocks & drill new holes in these fills so as to secure the new fence post holders (the job requires the replacement fence post holders to sit as close to the old ones as possible so as to reuse the original fence panels) or will the combination of drilling & post holder/post/fence panels load & stress on the new bolts (& it's Thunderbolts I'll be using to secure the post holders) & filled repair of the blocks mean it's just not possible & the blocks need replacing in their entirety?
Also due to the slight difference in the size of the fence post holders I've been able to get compared to the old ones (the old ones no longer being available) the new holes will not be directly in the same place on the blocks as the old, most will be overlapping with any fill & what's left of the block around them. I know this compounds the issue of ensuring the long term stability & security of the repair but is there any way I can do this job without having to remove & replace the damaged cinder blocks - perhaps by drilling pilot holes & gradually moving up through bit sizes until I reach the max size for the Thunderbolts - or is the replacement of the blocks & entirely new holes drilled in them the only option?
Thanks.
