Concrete is basically a flooring material that is used to build the foundation of a building. Having a history of its own (it was used in the arena of Rome) concrete is best known for its durability. Today many homeowners’ must-have material is concrete when it comes to flooring.
Even though sanding concrete at your home sidewalk might seem like too much effort to put for a trivial task, you can still sand the concrete floors at home for polished as well as grandeur appearance.
Also, sanding is essential when it comes to resurfacing a treated concrete floor. However, you must plan because the type of sander can have huge influence on finished product.
As it's a hard material, you might be wondering how exactly you can sand concrete? To sand spacious place you definitely should go for a sander. A random orbital sander can be ideal for this job. The handheld random orbital sander can prove to be a powerful sanding tool to use.
Table of Contents
Why Is a Random Orbital Sander?
As you have known why choosing random orbital sander, now the main question arrives that how to sand concrete with the random orbital sander?
Our article is going to show you how with necessary steps, have a look, please!
Things you need to sand concrete floor
- Epoxy resin
- Floor grinder (Avoid wet models)
- Duct tape
- Plastic Sheeting
- Mop ( I recommend to use a squeegee or sponge mop)
- Protective gear ( It’s better to work with goggles, face masks, rubber gloves, and earplugs)
- Shop vacuum (Attach directly to sander)
Step by Step Guide
Sanding Concrete with Random Orbital Sander
- 1Clear the concrete flooring you want to sand, remove the furniture and other things.
- 2Use plastic sheets on your walls, doorways, vents, and other surfaces to cover. This will help you to protect your walls from derbies and dust.
- 3It is necessary to mop your floors to get rid of particles. Simply mop it and let dry.
- 4To work in order, divide the floor into sectors so that you can concentrate one sector at a time.
- 5Use a 30 to 60 grit sandpaper to remove imperfections and smooth out the surface. Start working from the corner side and move up. If you start from the corner you will be able to maintain an order of sanding different sections of floor.
- 6Now make more vertical passes because in this way you are actually covering narrow paths too. Every time this method should cover half of the previous pass time.
- 7Always be extra cautious when you will sand bumps. You should sand thoroughly until it smooth out. Try a few passes. Don’t leave the sander stationary or else there won’t be even finishing.
- 8Use epoxy resin to fill any sort cracks and rough walls, let it dry and settle.
- 9After finishing the first set of passes, start from there again. Overturn the process to end at the original corner you started.
- 10Now run horizontally in both directions. Make certain of two mores sets to pass.
- 11Clean the floor carefully with vacuum or damp rag. Now you must apply an even coat of concrete sealer.
- 12After than change to an 80 to 120 grit sandpaper for more smoothing result. You should repeat the steps for 6 to 10 times.
- 13Again clean the floor. Now switch to a grit paper that is finer. Grits of 240 or 320 are considered to be finer grits.
- 14All you need to do now is to carry on the process redoing steps 6 to 10 with finer grit paper. Continue the process until it reaches 1.500 grit or more. You can occasionally use mopping for excess debris or dust.
- 15For best results re-examine the floor. If there is any traces of paint, give one last mopping.
- 16If you find it necessary then you can paint on the floor and there you the final step!
How to achieve a uniform look on floors?
Sanding concrete floor is surely a perfect way to give it a new look but you need to be careful when it comes to sanding an interior concrete floor. Sorry to say but you can just sand one part of the floor rather you need to process over the entire surface of the floor.
Because of coarse sanding, the surface of the floor gets affected and the shades and color thus differentiate and penetrate. Stain the whole floor if you sand a particular section. Because of sanding results in noticeable different shades on the floor.
Can You Sand Concrete with Regular Sandpaper?
You can sand concrete with regular sandpaper yet there are some secrets you must know to suit your purpose. For example- If you intend to basic sanding then go for 40 to 60 range coarse grit sandpaper.
If smooth finishing is your primary concern then definitely use 80 to 120 grit sandpaper.
Again if you consider using dry-wet sandpaper then you should wet the area before starting to work. It simply keeps the dust away.
Always be alert not to let the slurry dry on concrete. It will unnecessarily worsen your toil by hardening the place.
Have a small area to sand? Then Orbital, Palm or Belt sander will do enough.
Again, there might be rough imperfections even after sanding; in this case, you can use a special diamond disc or concrete floor grinder.
Diamond sandpapers are well known for lasting longer. It also saves a huge amount of time for you. Even though it might cost a little bit higher, it’s worth purchasing to reduce your hard work.
Knowing the methods above you might have come to a conclusion of how to sand well with a random orbit sander.
As for smaller projects and jobs you can use the handheld electric orbital sander. But for the larger proton of surface, you can also try using a drum sander. Sanding concrete flooring in warehouses or factories requires the tool that suits the job. Choose wisely!