Repairing Guides

how to repair rough concrete

by Lolita Rolfson Published 3 years ago Updated 2 years ago
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How to Resurface Worn Concrete

  1. Clean the Concrete. For surface preparation, wear heavy boots and protective glasses and blast off surface dirt with a gas-powered pressure washer that can reach at least 3,500 ...
  2. Patch Spalled Areas. While the concrete is damp, mix up enough resurfacer to fill any divots. ...
  3. Spread the Resurfacer. Fill the walkway joints with peel-and-stick foam weatherstripping, and dampen the concrete if necessary.
  4. Trowel Out the Resurfacer. Spread the resurfacer until it's between 1/8 and ¼ inch thick. ...

Part of a video titled How to Resurface Concrete - YouTube
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Quick read concrete resurfacer will renew your concrete surface. And a fraction of the cost to tearMoreQuick read concrete resurfacer will renew your concrete surface. And a fraction of the cost to tear out and replace old concrete slabs as with any concrete repair.

Full Answer

How to smooth out rough concrete?

How to Smooth a Rough Concrete Patio

  1. Gather Your Materials. The first thing that you will need to do here is to gather your materials, which include an epoxy resin duct tape, a floor grinder, ...
  2. Prepare the Area. Remove all furniture and items from the concrete patio. ...
  3. Start Sanding. ...
  4. Fill Cracks. ...
  5. Continue Sanding. ...
  6. Apply Concrete Sealer. ...
  7. Continue Sanding. ...
  8. Clean the Floor and Continue. ...

How to easily resurface a concrete floor?

  • Use a broom and a dustpan to remove any large debris before starting.
  • Sweep up any dust.
  • Use a shop vac if necessary.
  • Spray the floor with a 1:1 mixture of Neutra clean and water.
  • Wet the floor using a water hose.
  • Scrub it with a push broom.
  • Use the squeegee to push the water to the drain.

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How to smooth an uneven or damaged concrete floor?

Part 1 of 2: Cleaning the Surface

  1. Put on goggles, gloves, and a dust mask to protect yourself. This job sends a lot of dust and concrete debris into the air.
  2. Chisel the sides of the crack or hole to make them square. The bonding material won’t stick as well to rounded edges.
  3. Sweep any large concrete chunks out of the hole. ...
  4. Vacuum the area with a shop vac. ...

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How to fix a rough concrete floor?

Tools

  • 1 Using a Chisel, Make the Crack Wider at the Bottom than the Top. ...
  • 2 Clean Out the Debris with a Stiff Fiber or Wire Brush
  • 3 Fill the Crack with Patching Mix (also know as Vinyl Concrete) Patching mix is made from vinyl, Portland cement and sand. ...
  • 5 Wet the Surface and Apply a Concrete Bonding Agent. ...

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Can rough concrete be smoothed?

A concrete grinder may be necessary if the concrete is very rough or has larger imperfections that sandpaper will not smooth out. A grinder can also be good if you do not have the vertical space available for another layer of concrete. This can grind the floor to make it smooth without adding thickness to the surface.

How do you smooth out old rough concrete?

How to Smooth a Rough Concrete PatioStep 1: Gather Your Materials. ... Step 2: Prepare the Area. ... Step 3: Start Sanding. ... Step 4: Fill Cracks. ... Step 5: Continue Sanding. ... Step 6: Apply Concrete Sealer. ... Step 7: Continue Sanding. ... Step 8: Clean the Floor and Continue.

How do you fix rough uneven concrete?

3:5816:07SMOOTHING AN UNEVEN CONCRETE FLOOR - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf i want the floor to be relatively flat um and and level then the only way to do that is toMoreIf i want the floor to be relatively flat um and and level then the only way to do that is to improve it with a screed. If you're happy with the floor you just want it to be smooth.

How do you smooth rough texture of concrete?

4 Steps You Should Follow If You Want to Learn How to Smooth Concrete after It DriesRemove all imperfections on the surface.Vacuum up all debris and apply the adherent.Apply a new layer of concrete.Sand the surface and wash the concrete.Apply a layer of vitrifier to protect the concrete.

Whats the difference between cement and concrete?

What is the difference between cement and concrete? Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement.

Is there a way to sand down concrete?

It can be sanded with wet or dry sandpaper, but it'll take a long time and not produce the desired results perfectly. If you have the right knowledge to do the job, you may source a grinder or sander from a DIY shop. You can get several types of concrete sanders.

Can you put epoxy on rough concrete?

Epoxy is not suitable for leveling rough concrete slabs. 2. A common misconception is that by applying a high build epoxy coating (like a self leveling) on uneven concrete the floor will magically become smooth and level. THIS WILL NOT HAPPEN!

What is the best product to resurface concrete?

Our Top PicksBest For Interiors. Quikrete Fast-Setting Self-Leveling Floor Resurfacer. ... Best for Exteriors. Rapid Set High Strength, 15 Min Set, Featheredge. ... Best For Cracks. KILZ Over Armor Textured Wood/Concrete Coating. ... Best For Flooring. Ardex Feather Finish Grey Self-Drying Cement. ... Best For Small Jobs. ... Best Premixed.

What can I do with a rough concrete floor?

To smooth a rough concrete slab, you will need to brush off all debris with a broom, then wash away the grime with a mop using neutral cleaner and warm water. Next, you will want to identify the areas with cracks or misshapen areas.

Can you seal rough concrete?

Sealed Floors are Durable A sealed concrete floor will be protected from the elements, preventing cracking, scaling, and other common concrete problems. Sealing your concrete floors prevents damage – no matter how regularly your floors are used.

Why does my concrete look rocky?

If you use too much water, the concrete will be rocky, pitted, weak and prone to cracks. Too little water kills workability. If you use too little water, the concrete will be impossible to work with. You won't be able to float it properly of tamp the stones down.

How do you make uneven concrete even?

Grind any high and inconsistent spots into the same level by moving the grinding plate back-forth and sideways. Mix your leveling compound into a thin and consistent paste. The paste seals the floor cracks. Spread the leveling primer on the surface using a soft bristle push broom and ensure the layer is smooth.

What is the cheapest way to level a concrete floor?

There are self-leveling coatings designed to fill gaps and cracks. You could also try using vinyl floor tiles to make the transition more gradual. Probably the easiest (and cheapest) thing to do would be to get a big diamond grinding wheel and bevel down the lip.

What do you put on uneven concrete floors?

With uneven concrete floors, the quickest and most effective remedy for the situation is to use a self-leveling compound that fills in the low spots and makes the floor completely level. Floor topping can fix a great many problems floors to create an aesthetically pleasing surface for floor polishing.

How do you level an uneven exterior concrete slab?

Use a Concrete Leveling Compound For concrete patios that are only slightly uneven, a concrete leveling compound is often enough to relevel the slab. This process begins with a thorough cleaning of the concrete.

Why is my concrete rough?

The most common reason people get a rough surface is due to laitance . This happens when the concrete is troweled too early with the steel trowel. The trowel closes off the pores of the concrete so when this is done while there is still too much moisture in the concrete, the moisture gets trapped inside so it’s not able to evaporate properly. When the concrete cures, it usually looks very smooth and attractive however once you start sanding, that soft, dusty “cream layer” easily sands away and you’re left with a gritty, rough surface. If this cream layer isn’t removed and the concrete is sealed, you will notice that the sealer will chip or peel very easily. It can happen after a few weeks or even several months after being sealed however, it will eventually come up and need to be fixed. If you see this happening when you begin to sand, sand off the entire cream layer until you reveal the rough, gritty surface underneath. Then you can begin repairing.

Can you rip a concrete top out?

The beauty of concrete is that the majority of issues can be fixed by using one or more of these methods. It’s very rare that a top will have to be ripped out completely and redone. If you’re not sure which method is best for your situation, reach out to us or other concrete professionals.

How to tell if concrete is about to cure?

This will create blended edges that are crisp. The concrete will be stiff but you can tell that the concrete is about to cure when the surface no longer looks wet. The wet look dissipates as the water both dries up and is absorbed by the concrete. Since the curing is not complete it remains pliable.

How to get concrete smooth?

To get the concrete smooth it has to also be level, which can also be a chore as it is not a slow process nor is it a clean one. Concrete will remain somewhat fluid until it completely cures. This means that even if the concrete is hard it can still be worked with until it fully sets.

What to use to spread out stiff concrete?

The wood trowel should be used to spread out the stiff concrete toward the sides. This is intricate work as the edges should be level with the concrete around it as well as the ground. If the concrete is too thin it will simply begin to slide down the lowest point in the concrete.

How to smooth rough concrete?

There are several ways to repair rough/uneven surfaces. The first and most common method is to grind and polish using a wet polisher and diamond polishing pads (and possibly a diamond grinding cup wheel, depending on the severity of the imperfections).

Can you put epoxy over concrete?

Finally, you can apply epoxy over the concrete. This will fill in any rough areas making it smooth to the touch. You can add pigment or keep it clear. You can use a thinner, water based epoxy or a more traditional solvent based epoxy. The process for this will depend on the epoxy you choose.

What is a concrete overlay?

A concrete overlay is a very thin layer of specially designed bag mix concrete used to resurface, repair or stamp existing concrete surfaces.

Who owns Day's Concrete Floors?

Hi, I am Mike Day, owner of Day’s Concrete Floors, Inc. in Maine, where I've been working with concrete for 40 years now, and this website is where I can share with you all the knowledge and wisdom I've gained from installing all kinds of decorative concrete, concrete floors, concrete overlays, stained concrete and also fixing cracked or spalled concrete.

Can you put grit on concrete?

Second, a concrete overlay could be installed over the rough surface with color added to it and lightly broomed, giving you more of the look you were first looking for.

Can you polish concrete?

One is, you could grind or polish the surface which would remove the rough broom finish and smooth the surface of the concrete. Some of the aggregate would be exposed giving you a nice smooth decorative look to your sidewalk and patio.

Can Concrete Be Poured In The Winter? What Temp. is too Cold?

Is it safe to pour concrete in the winter? Concrete can be poured in the winter if the proper precautions are taken. Use blankets to protect from freezing.

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