My concrete garage floor has a control joint (relief cut) down the center of it and where my garage door closes on top of it (perpendicular to the cut) there is a substantial air gap. It's big enough to see daylight through with the door closed. Any recommendations on how to seal that gap up?
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Concrete control joint under garage door
- Thread starter Automag88
- Start date
sika flex makes a good polyurethane caulk for concrete.
rodster_67
Well-known member
I have the same situation and just used clear silicon caulk.
I have the same situation and just used clear silicon caulk.
Does it hold up pretty well?
jdcompman
Well-known member
sika flex makes a good polyurethane caulk for concrete.
^^^ This. Filled these joints with this in multiple garages now. Looks great and holds up great!
BTW Home Depot carries it.
mhoss44
Well-known member
Quikcrete makes a patch product in a tub for large cracks, as well as thinner in a quart jug for squeezing into smaller cracks.
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Sent from my iPad using Tapatalk
^^^ This. Filled these joints with this in multiple garages now. Looks great and holds up great!
BTW Home Depot carries it.
Thanks for the info! Did you fill the joints all the way through your garage? I think I might have to just to burn a whole tube up
toplessHO
Well-known member
cant beat the grey colored poly caulk. Other than the extremely long cure time its bullet proof.
jdcompman
Well-known member
Thanks for the info! Did you fill the joints all the way through your garage? I think I might have to just to burn a whole tube up
Yep filled all the cut lines. A tip when you're doing it, cut the end of the tip off like normal but make the opening pretty small. Then take your razor blade and shave down opposite sides of the end of the tip so it will fit nicely in the crack and give a very clean result.