Concrete floor grinding has become a competitive field in the Construction industry. It can achieve high-quality outcomes of surface preparation. Hence, it is very important to know the 5 top grinding and polishing mistakes and why it is important to rectify them.

Mistake 1: Selecting The Incorrect Bond For The Concrete You Are Working On

To put it in simpler terms, we have placed the general rule of thumb at the top for your reference.

  • If you need to work on Soft concrete, use Hard Bond Diamonds.
  • If you need to work on Medium Concrete, use Medium Bond Diamonds.
  • If you need to work on Hard Concrete, use Soft Bond Diamonds.
  • If you need to work on Very Hard Concrete, use Extra Soft Bond Diamonds.

This rule of thumb is utmost useful when selecting tools for the Concrete Floor Grinding job you need to do. Simply put, the rule of thumb illustrates the need for hard bond diamonds when working on soft concrete and the need of soft bond diamonds when working on hard concrete.

One major mistake contractors commit, is choosing the unsuitable bond for the concrete hardness at hand. By doing so, two problems emerge and dealing with their resolution is not always easy. Firstly, the diamonds do not cut through properly. This could happen because of heating up and glazing over. This scenario is mostly observed on hard concrete. Secondly, your tools will be at risk of getting worn out prematurely. Either way, you end up wasting your valuable resources – your time, efforts, and your money- and thereby results are affected negatively.

Mistake 2: Running the Grinder Unnecessarily Fast

Another common mistake commonly made by the operator when feeling pressured is running the grinder at speeds that are not necessary at the moment. This tends to happen when the operator wants a higher production rate mostly.. Therefore, he turns up the speed of the grinder to finish more work in less time.

However, you must understand that this increased speed can lead to overheating and overglazing issues in the diamonds – particularly on hard concrete. This prevents the diamonds from cutting properly, as mentioned earlier. Therefore, finding the right speed to operate the grinder at is crucial, but speed alone is not enough to produce better results. The key tip to remember here is the direct proportionality between greater downward pressure and faster grinding.

There are 2 ways through which the operator can achieve this. A heavy machine will obviously give high head pressure but so do various diamond options as follows:

  • Single rectangle
  • Double rectangle
  • Single round
  • Double round

Mistake 3: Choosing Cheap Diamonds Simply for Cutting Back On The Expenses

Although many times, prices of an item is not the indicator of its quality(or its lack) but as regards to diamond tooling, it is essential to make sure that price is not the deciding criterion for your purchase.

Diamonds of poor quality get worn out quickly and inconsistently. They can leave scratches on floors and usually perform poorly. They mostly come with limited or zero support from the manufacturer/vendor. Make sure to buy from a trusted manufacturer/vendor who is willing to stand by their product promise. This will save not only your time but also your money in the long run.

Mistake 4: Not Understanding The Process Needed For The Desired Outcome

When you begin the job, it is essential that you know the final result you wish to achieve; it could be the type of polish you are looking for or how to begin with the polish work and finishing etc. However, you can rely on the following points to be sure of certain basics:

Most polishing work should start with a 40G metal bond diamond in order to expose the aggregate or the Salt and Pepper alone.

If you have chosen a cream polish, remember to never start work with a metal bond diamond.

If you have to remove remnants like epoxy on the flooring before the polish, do not use the aggressive abrasives. They will leave deep scratches that are very difficult to get rid of.

If you are unsure of which diamond to start work with, lean on to the side of caution and begin with less aggressive diamonds to stay safe. You always have the chance to drop the work midway and go back to a more aggressive diamond, if there is a need.

Mistake 5: Not Removing The Stubborn Scratches Right Away

When you polish a floor, you should keep an eye on the finish you are producing as you go ahead. If you can find even a few faint scratches showing up, you must get rid of them immediately. Do not hope that they will go away on their own. They will only continue to grow deeper as you keep polishing the floor. The results will eventually highly suffer because of this tiny negligence.

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