what to use to patch deep hole in concrete

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If your home has physical, you may find holes forming due to strong weather or rodents. Most holes can be stock-still with a quality mortar mix, although you should use i with a crushed stone aggregate to fill holes over 1 in (two.5 cm) deep. Treat holes equally soon as you find them so yous can foreclose h2o and rodents from further damaging the concrete and getting into your home. Before attempting to make full a hole, clear out loose concrete and other debris. Then, mix the mortar, fill in the hole, and level information technology to blend it in with the surrounding structure. Concrete takes time to cure, then continue the patch moist for several days for a stronger fix. Patching physical holes is a simple weekend project and it tin assistance protect your home for decades.

1. 1

   Wear a grit mask and safety glasses before cleaning the physical. ^[1] It is a dusty job, and then e'er put on protective gear before working on the damaged area. Concrete releases plenty of dust when yous chip information technology. That also means small fragments could come up back toward your confront while you piece of work. Have rubber gloves bachelor as well, although y'all won't need them until yous begin mixing new concrete.^[2]

   • If you're working indoors, ventilate the area equally much as possible to bargain with the grit. Open nearby doors and windows. Turn on any bachelor ventilation fans and vacuum up grit when you're washed.
   • Since concrete tin can produce a lot of dust, consider protecting nearby areas with a plastic tarp.

2. 2

   Use a hammer and chisel to remove loose concrete from the hole. Knock away the cracked and aging concrete around the hole. Also, try to flatten out the bottom of the pigsty to create a stable, level surface for the new patching material. Since a thicker patch is more likely to final a long time, try to brand the hole upwardly to one in (2.v cm) deep if it isn't already deeper than that.^[3]

   • If the pigsty is already greater than ane in (2.v cm) deep, don't attempt to make information technology deeper. Instead, clean information technology out and choose an appropriate patching compound.
   • If possible, make the lesser function of the hole slightly wider than the top part. You can do this by belongings the chisel diagonally to chip away at the lesser edges of the hole. Making the bottom function a little bigger helps lock the patch into the existing concrete.
   • You could also use a round saw with a masonry bit to cut out damaged physical.^[4]

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3. 3

   Brush or vacuum loose debris out of the hole. For a simple mode to clear out loose debris, scrub the concrete with a wire brush. If you accept a shop vacuum, employ it for a faster fashion to collect the droppings. Make certain the hole is completely clear of debris earlier attempting to patch it.^[v]

   • Eliminate all debris so it doesn't go far the fashion of the patching material. Anything left in the hole will weaken the patch!

4. four

   Wash the physical with a cleaner if y'all need to flush out loose debris. Buy a commercial concrete cleaner and cascade it in the hole. Scrub information technology with a wire brush to aid work the cleaner into the remaining concrete. Check for whatsoever loose concrete kicked upwards by the brush and remove it.^[half-dozen]

   • Commercial concrete cleaners are very useful for preparing concrete. They eliminate tough stains, dirt, or debris that can weaken the new patch. Debris affects the concrete's consistency, so the patching material may not bond properly or be as strong as it should be.
   • If the concrete pigsty looks clean, yous can just spray it with water.

5. 5

   Rinse the concrete with clean water and let it dry. Spray it with water from a hose or pour water over it. Make sure all of the droppings is gone. Then, soak upwards the excess moisture with make clean rags or paper towels. Wait for any standing h2o to completely evaporate earlier attempting to patch the hole. This may take xxx minutes to an hour, depending on the conditions and how much h2o is left.^[7]

   • Any water left over will weaken the concrete patch as much as loose droppings would. Give it plenty of fourth dimension to dry out!

6. 6

   Spray the hole with water if it's more than 1 in (ii.5 cm) deep. Removing the debris from a large hole is often a piffling challenging. In most cases, y'all tin use a brush or vacuum to get most of the debris. If that isn't an option, fill the hole with h2o. Spray it downwards with a hose or pour water into it until it overflows, flushing out the droppings.^[8]

   • Call up to widen the hole by removing loose physical commencement. Most of the time, this volition let y'all to castor or vacuum out the debris.
   • Keep washing out the hole until you're sure it looks clean. Watch for the water to stay clear without any droppings in it. Then, soak up every bit much water as possible and allow the hole air dry.

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1. 1

   Fill holes with a mortar mix instead of regular concrete. When y'all shop for store-bought concrete, you will see a variety of different options. New concrete can't bond properly with the old physical, so you lot will have to get something specifically meant for repairs. Select a mortar mix with sand for a hole less than ane in (2.v cm) deep and a mix with gravel for a pigsty deeper than that. The mortar mix ofttimes comes in 60 lb (27 kg) bags, which brand about ⁱ⁄₃  cu ft (0.0094 one thousand^three) of concrete.^[9]

   • A sixty lb (27 kg) bag fills a hole about i ft (0.thirty m) long, 3 ft (0.91 g) wide, and two in (5.ane cm) deep. Unless you're doing many repairs, a single bag volition most likely be enough.
   • If you're attempting to make your own mortar, combine 1 part Portland cement, 3 parts masonry sand or gravel, and h2o.

2. ii

   Castor a bonding agent onto the physical. A bonding agent is a liquid that helps join new and onetime concrete. Put on work gloves if you haven't already. Dip a paintbrush in and spread information technology throughout the hole. Coat the bottom and sides of the hole with an even, consistent layer.^[ten]

   • Note that the bonding agent can oft be added later you have poured the concrete into the hole. Cheque the manufacturer's instructions for more than data.
   • You lot may besides be able to mix the bonding agent in with the concrete. This is usually washed past replacing 50% to lxxx% of the water with the bonding agent.
   • If you don't apply the bonding agent now, lightly dampen the concrete with a moist sponge. Brand sure there isn't any standing water in the hole.

3. 3

   Cascade the mortar mix into a bucket filled with water. Add the h2o to the mixing bucket first to reduce the corporeality of dust released when you drop in the mortar. Mostly, use nigh ten  fl oz (300 mL) of lukewarm water for every v lb (2.three kg) of mortar mix you lot program on using. If you utilise as well much water, the mortar will be also soupy and won't ready properly.^[11]

   • Err on the side of caution when mixing the mortar. You can always add more than water, simply you lot tin can't remove information technology. The simply way to deal with a runny mix is to add more than mortar.
   • Recollect to check the manufacturer'southward recommendations on how much h2o to add. Cistron in the liquid bonding agent if you plan on adding whatsoever to the mix.
   • Make sure you're wearing condom glasses, a ventilated mask, long jeans, and gloves when mixing mortar.^[12]

4. 4

   Mix the mortar for 3 to 5 minutes until it forms a thick putty. Stir the mortar around in the bucket with a hoe or another tool. You can too use a paddle attachment, which is a metallic mixing rod that plugs into the end of a power drill. Keep mixing the mortar while checking its consistency. Information technology is fix for employ once it reaches the consistency of a thick, spreadable peanut butter.^[xiii]

   • Brand adjustments to get the mortar to the proper consistency. Add water gradually to sparse it out, mixing it for a minute afterwards each improver to check its consistency again.

5. five

   Layer mortar in the pigsty with a trowel. You lot can apply a putty pocketknife to spread the mixture over a small pigsty. Work the mixture into the hole with the tip of the tool. Cover the sides of the hole start, then begin filling the middle of the hole. Try spreading the mortar near ¹⁄₄  in (0.64 cm) thick each fourth dimension. If you lot expect for each layer to dry earlier calculation the next one, yous can create a stronger patch.^[14]

   • Layering mortar is but really useful if y'all're working with a deep hole, such as ane more than one in (2.5 cm) deep. If you're fixing a shallow pigsty, you might every bit well finish it in ane go.
   • Continue the patching textile roughly level with the surrounding concrete. Adding more than you need is okay. You will accept a take a chance to eliminate the backlog before it dries.
   • Patching a vertical surface, such as a wall, is pretty much the same as patching a hole on the footing. Push the mortar deep into the pigsty at first, then add more layer by layer. It will stay in place.

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1. 1

   Drag a board over the hole to remove excess mortar. Select a lath that is at least ane ft (0.30 k) longer than the hole. Lay it across the hole on one side. Then, drag it over the hole. While dragging it, move it back and along in a sawing motion to flatten the patch.^[fifteen]

   • The board volition collect excess mortar then y'all can smooth out the patch and go on it level with the surrounding physical.
   • For vertical surfaces, try dragging a lath downwards over the hole and then going back over the patch with a trowel. If y'all can't use a board, just employ a trowel or float instead.

2. 2

   Smooth out the remaining mortar with a trowel or float. If you have a float, which is a flat-bottomed tool designed for smoothing concrete, try using it on the mortar. Move the tool dorsum and forth across the mortar a few times. After a few passes, the mortar patch will wait flat and blend in well with the surrounding physical.^[sixteen]

   • Brand sure the patch is level with the concrete effectually information technology. Use a wood board to remove whatever excess before smoothing the mortar out and letting it harden.

3. 3

   Encompass the patch with a plastic sheet to protect it from damage. The patch will exist pretty vulnerable until it has had a chance to cure. Purchase a physical insulation barrier, spread information technology out across the patch, and pin it in identify. Weight it down with heavy objects like bricks. If you're fixing a wall, use a waterproof tape to keep the sheet flat against the concrete.^[17]

   • Proceed other people abroad from the physical until it has had a chance to cure. Don't permit anyone walk or bulldoze over it, for instance.

4. 4

   Look at to the lowest degree 6 hours, then mist the patch with lukewarm h2o. Quick-drying patching material usually takes well-nigh four to half-dozen hours to solidify. Afterwards it has become hard to the touch, lift up the plastic canvass. Utilize a spray bottle or a hose to lightly dampen the concrete with lukewarm water. Adding the water causes the concrete to continue curing, making the patch even stronger.^[eighteen]

   • The drying fourth dimension can vary depending on the weather and product used, so check the manufacturer's recommendations before misting.

5. 5

   Continue misting the concrete twice a mean solar day for at to the lowest degree 7 days while information technology dries. Many quick-drying compounds may cure at a faster rate, and then consult the manufacturer's instructions for more information. Fix bated a certain time each morn and evening and then yous won't forget to mist the patching material as it sets. Spray information technology each time with a light corporeality of lukewarm water. The patch continues to grow stronger equally it cures.^[19]

   • Some products may crave yous to keep the patch covered for up to 28 days while misting each day. Even though this may seem like a long fourth dimension, it is worth doing if the manufacturer recommends information technology.
   • Once the concrete has finished curing, remove the plastic sheet and exam information technology out. Information technology should exist level with the surrounding physical and feel hard to the touch.

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• If your concrete patch sticks out after information technology has cured, roll a concrete grinder over it. Habiliment down the concrete until it is apartment and level with the old concrete effectually it.

• You can also repair damaged steps and slabs past following the same steps. However, y'all may need to build a wooden frame to pour and agree concrete in a specific area.

• Since concrete is porous, information technology is pretty easy to paint. Roll a masonry primer and paint over it.

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• Concrete releases grit that tin can be irritating to breathe in. Ever wear a dust mask, prophylactic spectacles, and piece of work gloves.

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Things You'll Need

• Mortar mix
• Plastic bucket or wheelbarrow
• Hoe, shovel, or alternative mixer
• Trowel
• Wood lath
• Hammer
• Chisel
• Wire castor or vacuum
• Clean water
• Hose
• Plastic concrete insulation canvas
• Misting bottle
• Bonding amanuensis
• Paper towels
• Concrete cleaner (optional)
• Dust mask
• Safety spectacles
• Work gloves

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Source: https://www.wikihow.com/Fill-Concrete-Holes

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