Do I have to fix tack strip damage on concrete before installing wood laminate?
I'd take a look at the manufacturer's installation instructions for the laminate flooring you are installing. They'll list the allowable variances in the subfloor. Using that you'll be able to determine if the damage from the tack strip requires patching. Following the manufacturer's instructions would be best practice.
In reality though, I doubt you'll have any issues going right over where the tack strips were with your new flooring unless they are unusually severe.
Good luck with the floor install!
Tack strip removal damage is typically minimal. Maybe a loonie size divot. This will not affect the laminate installation whatsoever.
If the damage, depth of the damage is severe and could affect the installation, then yes, fix / repair the damaged area.
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