FAQ: How Much Concrete Can You Grind Down?

Can you grind down a concrete slab?

If you have an uneven concrete slab, you could replace it or cover it with leveling compound. But consider grinding it instead. Powerful grinding equipment is available at rental centers that cater to contractors. Grinding down leftover thin-set or other hard coatings.

How long after pouring concrete can you grind it?

We have been advised 48 hours should pass after pouring that the slab before it is walked on, as this can alter the aggregate placement (push it further down into the slab), creating for bald patches despite grinding down to the furthest possible exposure level.

Can I grind concrete with an angle grinder?

An angle grinder can be used to level, smooth and polish concrete by grinding it down. They can also be used to remove paint and floor adhesives. To grind concrete with a angle grinder you need a diamond cup wheel, a dust shroud attachment, and a vacuum cleaner.

Is grinding concrete dangerous?

Grinding and polishing of concrete will release the dangerous silica-bearing dust in to air, exposing construction workers and others. Breathing the silica dust can result in dangerous, irreversible, untreatable diseases, including silicosis and lung cancer (that’s the tragedy).

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How much does it cost to grind down concrete?

You may get several prices for polished concrete. The least expensive may be under $25 per square metre, but on average, grind and seal polished concrete will cost around $50 per square metre. Honed concrete may cost $75 per square metre. Mechanically polished floors may cost $100 or more per square metre.

Why do you grind concrete?

Grinding concrete removes all imperfections and inconsistencies in the concrete, resulting in a smooth and usable surface. Old and damaged concrete surfaces can be restored to their former glory and used for years and years to come.

Do you need to seal concrete after grinding?

It is always a good idea to seal your concrete floor after grinding. Grinding your concrete floor will smooth out the surface and bring out the speckled or marbled appearance of the aggregate, which increases the appearance and makes for a more decorative finish.

How hard is it to polish concrete?

Polishing concrete is not an easy DIY project, since it requires heavy equipment and special diamond tooling. We recommend hiring a professional concrete polishing contractor to complete your project. They will have a thorough understanding of what it takes to achieve the best results.

Is polished concrete slippery when wet?

Polished concrete finishes may look as smooth as glass, but surprisingly, they are not slippery when wet. While polished cement floors do provide some traction in the face of water, it is obviously inadvisable to leave standing water on the surface for prolonged periods.

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What kind of grinding wheel for concrete?

A high concentration of silicon carbide grain helps this DEWALT 4-1/2 in. Concrete/Masonry Grinding Wheel aggressively shave down brick, marble, block, stone, mortar and other masonry. It’s constructed with three full sheets of fiberglass for utmost resilience and grinding power in pulverizing stonework.

How do you reduce dust when grinding concrete?

Wet Cutting (Water Spraying) – This engineering control helps to eliminate silica dust from ever becoming airborne and is the most efficient method of dust control in concrete cutting and grinding.

Can you smooth out concrete after it dries?

How do you smooth concrete after it dries? Sand the Surface and Wash the Concrete Finish by fine-tuning with light sandpaper, until the surface is perfectly smooth. We recommend using a hand planer to smooth and compact the surface.

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