It finishes with a nice surface and doesn't require any smoothing afterward. It is a thinner material and will flow to fill up the gap between your concrete slabs nicely. Self-leveling caulk is just what it sounds like. Dry SandÄefinitely optional, but sometimes used to help visually blend the caulk in with your concrete. Especially important if you use non-sag caulk. Using a spray bottle filled with soapy water can help smooth out the caulk. This can save you a ton of money by limiting the amount of caulk needed to fill the joint. If you have larger expansion joints, you will often want to buy a roll of backer rod to fill in the gaps between the joints before you caulk. You'll need a caulk gun that will hold the size of the caulk tubes you purchase. ![]() You can find either self-leveling or non-sag caulk that is specifically made for joint and crack sealing. We recommend a flexible polyurethane caulk. Tools & Materials Needed For Concrete Crack Repair 1. This protects the caulk from wear and tear of people walking and driving over it. Notice how the caulking is slightly lower than the concrete slab around it. This is precisely why we always recommend caulking the cracks and joints after we level your concrete slabs. If water is flowing under your driveway, it is only a matter of time before the slabs will begin to sink. This is the primary purpose of concrete driveway crack repair. Once the slabs are leveled, then the cracks or expansion joints are filled with a flexible caulk to keep water from flowing under the slab. Depending on how out of level your driveway is, this could be simply moving one slab, or it could involve lifting and leveling nearly every slab in the driveway. This could involve intact slabs that have sunk at expansion joints or slabs that have broken and partially sunk on one side of the crack. ![]() The concrete leveling process involves pumping material under the lower slab and gently lifting it until it is at the same level as the slabs around it. When caulking concrete cracks, we first want to get any slabs that are out of level from each other back into alignment. The first is concrete leveling, and the second is caulking (and sometimes grinding) the crack. When we talk about concrete driveway crack repair, we are typically talking about two processes. Step-by-step Guide for Driveway Crack CaulkingÄ«ecause driveway slabs are normally much bigger than sidewalks and other concrete areas, the cracks can be longer, and oftentimes wider, than other repairs.
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