A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Use a smooth, even motion, filling the crack flush with the surface, beveling it … Although the Sakrete foam filling can be used for cracks of this better size to fill large holes with the foam tube. For larger holes, you may need to build different thin filling layers instead of one often, making sure that each layer is allowed to dry before adding the next one. Underneath was the concrete in the condition you see in these pictures. The fixing adhesive allows the new compound to adhere to the concrete existing in the courtyard. Here is the question. Use some foam (like a piece of flexible pipe insulation cut to size) to fill the gap but leave enough room for a thin layer of sand and then for calk on top of that. The previous owners have filled the gap with river rocks, which gives it an "ok" appearance, but it doesn't do anything to keep water getting in between the foundation and this slab and … I have a concrete front entryway which up until a few months ago was covered by gray "Astroturf". can hydaulic cement be used to fill large voids? While caulk alone can be applied to narrow cracks, gaps wider than 1/4” should be filled with foam backer rod first. slate has no tensile strength & we've removed as much of it as we have tile,,, mesh doesn't provide the proper sealant configuration for any sealant. There is a technique when it comes to filling or caulking larger gaps or cracks and i will show you how. horizontal gaps ' don't get ' repaired ' but sealed,,, need backer rod & sealant - we use sika polysulfide OR polyurethane OR 100% silicone. Anything ¼ inch (or roughly the diameter of a pencil) or larger should be filled with Xcluder® Fill Fabric. How to repair cracks and plaster holes. The foam tube must be slightly wider than the crack to create an adjustment. Instead, use a concrete repair mix; these are readily available at home centers and online. i wouldn't use tile on any exterior application even in atlanta IF we were goind to stay in the home for long. Our virtual experts can diagnose your issue (for free!) The backer rod should fill the gap and make contact with the concrete on both sides of the gap. Use a putty knife to press it tightly into areas too narrow to push in with your fingers. A type that will adhere to existing concrete? Is there a concrete available to use to fill in large gaps in concrete? Using foam backer rod to fill a wide crack before caulking. Fill the trenches on either side of the driveway with small, rounded pea gravel (the size of marbles or peas). Gripset Betta Concrete Crack Filler is a waterproof sealer that penetrates into the depth of the crack, filling the void and sealing … What about slate? Civiconcepts. For a better experience, please enable JavaScript in your browser before proceeding. We use a variety of width of 58 inches. We use cookies to enhance your experience. In this video, This Old House contractor Tom Silva explains how to fill gaps in a wide-plank wood floor. Read More. JavaScript is disabled. Fill the crack with urethane caulk, similar to what you would use for driveway caulk. Have water or a household cleaner The best solution is to simply fill any gaps with caulk. Civiconcepts - how to fill large gaps in concrete. Options include epoxy compounds, latex patching material, and mortar mixes. and resolve simple problems. The best way to fill a gap in a driveway depends heavily on what kind of material your driveway is made from. The option to isolate the concrete block walls includes spraying foam insulation, injection foam insulation, polystyrene beads, foam boards and loose mineral filling. Caulk that is 100% silicone can be painted. For repair of large cracks and crushed concrete, following procedure can be adopted: 1.