https://japanesewoodworking.net/ 2026-10-18T19:21:06+00:00 https://japanesewoodworking.net/ https://japanesewoodworking.net/lib/exe/fetch.php?media=wiki:logo.png text/html 2026-10-18T15:34:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://japanesewoodworking.net/doku.php?id=concrete_joint_sealant_guide:horizontal_crack_prep_and_self-leveling&rev=1792337674&do=diff Before any sealant goes down, you need to understand what you are sealing. A joint that is full of compacted dirt will not accept sealant properly, and a crack with loose concrete edges will continue to crumble no matter what you apply over it. Walk the driveway and look at each joint individually. Note which ones are wide, which are shallow, and which have horizontal cracks running alongside them. A horizontal crack in the slab surface is different from a joint failure, and it may need a diffe…