Patching Anchor holes in Concrete block

[BigSalNY]

I am decommissioning a rental unit that was used as a gym. I have a ton of anchors that were used to mount gym equipment to the walls, I need to remove them and patch the holes.

Normally I would just use hydraulic cement out of a small can to patch. But i have easily 75-100 anchor holes varying in size from 1/4-1"...

I was thinking of putting Bonding Milk in a spray bottle and using some fast set sand mix.

looking for comments, suggestions and maybe a product recommendation


Walls will be getting painted after.

 

[PopcornSutton]

A sand mix sounds like the best thing, and a bonding agent can't hurt a bit. Not sure I would use a fast set, sounds like you're inside and regular mix will set up fine and you won't be hurrying and always mixing. A margin trowel works great, and I have found a piece of styrofoam rubbed on the surface while wet leaves a texture similar to the block itself. Even a scrap piece of block rubbed on it works.

 

[NUTTSGT]

The fast and cheap way would be some painters caulk and fill the holes. If they are too big, might take a second round.

A mason's bag for tuck pointing would probably do a nice job.

Was the block filled with anything ?

 

[egdede]

Use this stuff, or Sikka's product. EZ PZ

https://www.lowes.com/pd/DAP-32-oz-Waterproof-Interior-Exterior-Gray-Concrete-Patch/1085955?store=1144&cm_mmc=shp-_-c-_-prd-_-agile_Traffic-_-ggl-_-CRP_SHP_Agile_Traffic_E-_-1085955-_-local-_-0-_-0&gad_source=1&gbraid=0AAAAAD2B2W_j0HOqGPxMpDSXyhTLDjcqU&gclid=EAIaIQobChMItbHwhIi5iQMVXWpHAR2BKRpkEAQYAiABEgIfL_D_BwE&gclsrc=aw.ds

 

[BigSalNY]

The fast and cheap way would be some painters caulk and fill the holes. If they are too big, might take a second round.

A mason's bag for tuck pointing would probably do a nice job.

Was the block filled with anything ?

some of the walls have block fill in them, others garbage, some have zero... really ****** building practices

 

[NUTTSGT]

Use this stuff, or Sikka's product. EZ PZ

https://www.lowes.com/pd/DAP-32-oz-Waterproof-Interior-Exterior-Gray-Concrete-Patch/1085955?store=1144&cm_mmc=shp-_-c-_-prd-_-agile_Traffic-_-ggl-_-CRP_SHP_Agile_Traffic_E-_-1085955-_-local-_-0-_-0&gad_source=1&gbraid=0AAAAAD2B2W_j0HOqGPxMpDSXyhTLDjcqU&gclid=EAIaIQobChMItbHwhIi5iQMVXWpHAR2BKRpkEAQYAiABEgIfL_D_BwE&gclsrc=aw.ds

I'd try that in a heartbeat for the OP's task.

 

[The Cobbler]

above grade? I would probably just use hot set drywall compound or even ceramic tile grout . use a putty knife & jamb it in , wipe with wet cloth or sponge to blend it in to the block.

 

[Hilltopmasonry]

Just use standard pre mix mortar

Push it in with a trowel and use the edge to scrape it smooth

 

[Dig Doug]

Sac and Patch

what ever you use it will turn out smooth

a typical 8x8x16 block is some what porous so the patches will stand out
if planning to rent out again you might want to use drywall mud and putty coat the walls after patching

this is designed for vertical application

 

[BigSalNY]

I was looking around at work and had a bag of Rapid Set Mortar Repair, I picked up a few packets of their Set retarder and added 1 packet to each batch I mixed. I got about 40-50 minutes of pot life out of each batch. I plan on finishing up tomorrow, I post up some pics.