Concrete

How to Remove Thinset From Concrete: StepbyStep Guide

How to Remove Thinset From Concrete

To remove thinset from concrete, one effective method is to use an angle grinder with a thinset removal disc.

This disc attaches to the angle grinder and effectively removes the thinset, leaving a smooth concrete surface.

However, it is important to take precautions such as wearing a ventilator and goggles due to the dust that is created during the process.

It is also recommended to remove as much furniture as possible and enclose the work area to minimize dust spread.

Additionally, using a dust shield for the angle grinder that connects to a shop vac can help further reduce dust.


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Did You Know?

1. The process of removing thinset from concrete is commonly referred to as “thinset popping” within the construction industry.

2. Thinset is a cement-based adhesive that is typically used for setting tiles on surfaces such as concrete, mortar beds, or plywood.

3. Did you know that one of the most effective methods for removing thinset is by using a handheld rotary hammer with a chisel bit? This method helps break up the thinset, making it easier to remove.

4. Traditional methods of removing thinset from concrete involved labor-intensive techniques, such as using a floor scraper or hand chisel. However, advancements in technology have introduced more efficient and time-saving tools, such as electric grinders with diamond grinding wheels.

5. When removing thinset from concrete, it is important to wear protective gear, including safety goggles, a dust mask, and gloves. This is because the process can create fine dust particles that can be harmful if inhaled or come into contact with the skin.

Inefficient Methods: Reciprocating Saw And Hammer Drill Combo

When faced with the task of removing thinset from concrete, the author initially attempted using a combination of a reciprocating saw and a tile scraper. Unfortunately, this method proved to be slow and inefficient. The reciprocating saw struggled to make progress, and the tile scraper was not effective at removing the thinset completely. This approach seemed promising at first, but it quickly became apparent that a different method was needed.

Hiring Help: Broken Hammer Drill And Partially Cleared Floor

Recognizing the limitations of their tools, the author decided to hire someone to remove the thinset. However, fate had different plans, as the hired individual encountered a problem with their hammer drill. The drill broke, leaving the author with only a small section of the floor cleared of thinset. This setback further emphasized the need for a more reliable and efficient solution.

  • The author decided to hire someone to remove the thinset.
  • The hired individual encountered a problem with their hammer drill, which broke.
  • Only a small section of the floor was cleared of thinset.
  • This setback underscores the need for a more reliable and efficient solution.

“The drill broke, leaving the author with only a small section of the floor cleared of thinset.”

Rental Machine Success With A Catch: 1/4″ Mortar Left Behind

Desperate for a solution, the author turned to Home Depot and rented a floor removal machine. This machine proved to be effective in removing the top layer of thinset from the concrete. However, there was an unfortunate catch – approximately 1/4″ of mortar was still clinging stubbornly to the floor. While a significant improvement, this residue left the surface uneven and unsuitable for new tile installation.

House Of Hepworths Solution: Angle Grinder With Thinset Removal Disc

In their search for a solution, the author stumbled upon a blog called House of Hepworths. On this blog, they discovered a method that involved using an angle grinder with a thinset removal disc. Intrigued by the potential of this technique, the author decided to give it a try. Little did they know that this would be the breakthrough they had been searching for.

Successful Thinset Removal: Smaller Disc Attachment For Angle Grinder

Armed with their newly acquired knowledge, the author purchased a smaller version of the thinset removal disc that attaches to an angle grinder. With cautious optimism, they began the process of removing the thinset from the concrete. To their delight, the disc proved to be highly effective, effortlessly grinding away the stubborn mortar and leaving behind a smooth and clean concrete floor. Finally, success!

  • The author purchased a smaller version of the thinset removal disc that attaches to an angle grinder.
  • Effortlessly grinded away the stubborn mortar.
  • Left behind a smooth and clean concrete floor.

Dust And Precautions: Angle Grinder Cleanup And Safety Measures

While the angle grinder method provided excellent results, it did come with a significant drawback – dust. Using an angle grinder to remove thinset creates a considerable amount of dust, which can be hazardous to health and wreak havoc on your surroundings. The author strongly advises taking necessary precautions such as wearing a ventilator and goggles to protect against dust inhalation and eye irritation. Additionally, it is recommended to enclose the work area as much as possible, remove furniture and employing a hazmat suit for personal protection.

The author found that despite their best efforts to close all doors and contain the dust, there was still some accumulation in other rooms. It became evident that cleaning up after the thinset removal process took longer than the actual work itself. However, the author mentions the availability of a dust shield for an angle grinder that connects to a shop vac, which can help minimize dust and speed up the cleanup process.

In conclusion, removing thinset from concrete can be a challenging task, but with the right tools and techniques, it is possible to achieve excellent results. The author’s journey from inefficient methods to the discovery of an effective solution highlights the importance of perseverance and experimentation. By using an angle grinder with a thinset removal disc, they were able to remove the thinset and create a smooth concrete surface. Remember to prioritize safety by taking necessary precautions against dust inhalation and eye irritation while working with an angle grinder. With careful planning and execution, you too can successfully remove thinset from concrete and prepare the surface for new tile installation.

Please note that this article was originally published on April 19, 2017, and updated on November 30, 2021. The author is currently working on a master bathroom makeover and plans to provide updated pictures in the future. For more information on removing thinset, the article suggests following DustRam®, a dustless flooring removal company.

Frequently Asked Questions

What is the best thing to remove thinset?

One of the most effective methods for removing thinset is by utilizing an angle grinder equipped with a sturdy metal brush attachment. This powerful combination allows for efficient and thorough removal of the stubborn adhesive. By utilizing the high speed and precision of the angle grinder, coupled with the abrasive nature of the metal brush, the thinset can be effectively scraped away, leaving behind a clean and smooth surface. This method is particularly advantageous for individuals who already possess an angle grinder and have experience with concrete grinding, as it maximizes the tool’s potential without requiring additional equipment or resources.

What liquid removes cement from tiles?

A highly effective liquid for removing cement from tiles is a vinegar solution. Vinegar, a versatile kitchen ingredient, can be diluted with water in equal parts to create the solution. Once applied to the areas with cement stains, it is recommended to let it sit for a while to allow proper absorption. Gently scrubbing the stains with a non-abrasive sponge or a scrub brush will then help eliminate the cement residue from the tiles.

1. What are the most effective methods for removing thinset from a concrete surface without causing damage?

One effective method for removing thinset from a concrete surface without causing damage is to use a hammer and chisel. Start by scoring the surface of the thinset with the chisel, and then carefully tap the chisel with a hammer to remove the thinset layer by layer. This method allows for precision and control, minimizing the risk of damaging the concrete underneath.

Another effective method is to use a floor scraper equipped with a carbide blade or a diamond grinding wheel. The scraper should be used at a low angle to gently scrape off the thinset from the concrete surface. This method is particularly useful for larger areas or thicker layers of thinset, as it covers more surface area and can remove the thinset more efficiently without causing significant damage to the concrete.

2. Are there any specialized tools or equipment that can aid in the process of removing thinset from concrete?

Yes, there are specialized tools and equipment available that can aid in the process of removing thinset from concrete. One commonly used tool is a floor scraper or a chisel with a wide blade, which can be manually operated to scrape away the thinset. Another option is a power scraper, which is an electric or pneumatic tool that uses a vibrating or rotating blade to efficiently remove thinset. These tools make the process faster and easier by exerting more force and reducing physical strain on the user. Additionally, there are also chemical thinset removers available in the market that can help soften and break down the thinset, making it easier to remove.

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