The process of wet concrete grinding requires a longer time than dry grinding. In addition, it requires a more extensive cleanup process. This can make it more expensive, but it will ensure that the finish will be as smooth as possible for a long time. Wet concrete grinding companies usually charge more for their services, and it is essential to choose wisely.
First, choose a grinder that is suitable for the job. You can buy one with either a hand-held or ride-on option. Once you’ve decided on a hero, choose the size of grinding disc you want to use. A 40-grit disc should work well, but if you need to do more thorough grinding, choose an 80-grit disc.
The cost of grinding concrete varies depending on many factors, including the quality of concrete and its hardness. A softer concrete will require a much more significant amount of consumables, and a more abrasive surface will cost more. If you’re unsure which method suits your project, ask a contractor for references.
Another consideration is how much dust you can deal with. Concrete grinding dust is a common problem, but it can be controlled and minimized by wearing proper protective clothing and face masks. Luckily, some concrete grinders include dust collection systems, so the amount of dust produced by the grinding process isn’t very high.
When grinding concrete, you must ensure it is adequately moist before use. Otherwise, the slurry can stick into the pores in the concrete. This makes it challenging to apply a coating if the slurry has dried. Water will also affect the machine’s bearings, leading to the grinding machine failing.
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When you wet concrete before grinding, the cement-cream finish will be easier to remove. To remove this finish, use silicon-carbide sandpaper of 320 to 400 grit. Silicon carbide sandpaper is more challenging than concrete and won’t leave deep scratches. You can then seal the concrete with a sealer. Wet sanding will also prevent frictional heating and smearing.