NJSUX 2 Posted August 31, 2017 I have a half finished basement. I noticed a crack in the foundation floor running from one side of the wall to the other. Whats the best fix for this? Quote Share this post Link to post Share on other sites
BlueLineFish 615 Posted August 31, 2017 Depends on how deep and wide the crack is. It could be just a surface crack or could be one side settled more than the other and it separated from each other Quote Share this post Link to post Share on other sites
Lambo2936 297 Posted August 31, 2017 Id personally probably open it up a bit with a small angle grinder(not the whole way down) and pour some self leveling cement or anchoring cement (brain fart, barely slept) or something of the sort in there. Quote Share this post Link to post Share on other sites
bhunted 887 Posted August 31, 2017 Groove out and use hydraulic cement...Sent from my iPhone using Tapatalk Quote Share this post Link to post Share on other sites
Alex V 99 Posted August 31, 2017 1 minute ago, bhunted said: Groove out and use hydraulic cement... Sent from my iPhone using Tapatalk What this guy said... Quote Share this post Link to post Share on other sites
BlueLineFish 615 Posted August 31, 2017 Yeah but if there is nothing supporting the slab because of settling then that needs to be addressed. For a wall crack dry groove out and add hydraulic cement Quote Share this post Link to post Share on other sites
Zeke 5,504 Posted August 31, 2017 6 hours ago, PEWPEW616 said: I have a half finished basement. I noticed a crack in the foundation floor running from one side of the wall to the other. Whats the best fix for this? Pic please. Quote Share this post Link to post Share on other sites
maintenanceguy 510 Posted August 31, 2017 I assume we're talking about the slab floor in the basement. Is this just a hairline crack with no visible movement? If so, leave it alone. Concrete cracks when it expands and contracts. This is why large areas of concrete have grooves cut into them after the concrete is cured - to give the slab a place to crack that won't look bad. It's not a problem and any attempt to fix it will make it look worse. If it bothers you, put some resilient type of floor down - VCT, carpet, vinyl, etc. Anything hard like epoxy will just crack there too. 1 Quote Share this post Link to post Share on other sites
Zeke 5,504 Posted August 31, 2017 9 minutes ago, maintenanceguy said: I assume we're talking about the slab floor in the basement. Is this just a hairline crack with no visible movement? If so, leave it alone. Concrete cracks when it expands and contracts. This is why large areas of concrete have grooves cut into them after the concrete is cured - to give the slab a place to crack that won't look bad. It's not a problem and any attempt to fix it will make it look worse. If it bothers you, put some resilient type of floor down - VCT, carpet, vinyl, etc. Anything hard like epoxy will just crack there too. Control joints 1 Quote Share this post Link to post Share on other sites
maintenanceguy 510 Posted September 1, 2017 1 hour ago, Zeke said: Control joints I believe the technical name for control joints is "groove". Quote Share this post Link to post Share on other sites
Zeke 5,504 Posted September 1, 2017 5 minutes ago, maintenanceguy said: I believe the technical name for control joints is "groove". Depends Oh, I get it Quote Share this post Link to post Share on other sites