Prepare the damaged area by removing any loose concrete particles. Remove caps from the injection ports by cutting along the tab attachments. Apply epoxy adhesive thinly into and around the damage with a small paintbrush. Wait about three minutes for the adhesive to become sticky. Click to see full answer. In this way, how do you fix overhead concrete?Work from the bottom of the repair to the top. Firmly place UNIQUE® Overhead & Vertical Concrete Repair Mortar into the patch or on the surface area. For deep-fill areas, apply a stiff mortar in layers to achieve your desired thickness.One may also ask, how do you fix holes in concrete? Using a Chisel, Make the Crack Wider at the Bottom than the Top. Clean Out the Debris with a Stiff Fiber or Wire Brush. Fill the Crack with Patching Mix (also know as Vinyl Concrete) Address Any Pop-Outs. Wet the Surface and Apply a Concrete Bonding Agent. Pack a Small Amount of Anchoring Cement into the Hole. Subsequently, one may also ask, can you patch concrete? Once you have a good, sticky surface for the concrete, simply add water to premixed concrete and patch the crack. For small patching jobs, use a pre-mixed concrete patch. If you use a ready-mix concrete patch, all you need to add is water. Fill the crack completely and tamp the patch.How do you fix small cracks in concrete?You can repair hairline cracks in concrete with a grout made of Portland cement and water. Add just enough water to the cement to form a thick paste. Moisten the old concrete along the hairline crack with water for several hours before adding the grout.