Check out some videos on removing paint from concrete. I have selected the best ones I could find.
Of course nothing is as easy as the professionals in a video make it look, but you'll get a much better idea of what you're up against and how to better prepare for it.
This first video shows the soy based chemicals being used. The first thing you'll see is application with a special sprayer. Typically the gel is spread with a notched squeegee for those that don't have an HVLP sprayer.
Notice them wearing spiked shoes. It's because the gel is very slippery and you must be very careful so you don't end up laying in it.
I'm pretty certain the paint on the floor is an acrylic enamel or latex. Epoxies do not come up that quickly and easily.
I like this next video because it has some good audio explanation along with it. The equipment is not very heavy, making it easy to transport and carry down to a basement if needed. The best part is the vacuum allows for dust-free grinding which is a huge benefit.
This is definitely the method I prefer for removing hard coatings like epoxy and urethane. It results in a super smooth but porous floor profile which is ideal for future paints and coatings.
It requires a little patience since the process is not as fast as I would like it. But it's very effective for smaller, residential floors.
Removing paint from concrete with a shotblaster is also very effective and creates a profile for skimcoats and overlays. You'll notice the slow but steady pace. If you go too fast you won't get up all the paint and moving to slow will chew up more of the concrete surface than what is necessary.
The machine in the video is one of the smallest models, but is about the only size you'll find available for rental. There are different sizes of metal shot for different levels of aggressiveness. Due to high rental cost, I don't recommend renting one these machines unless you can dedicate an entire day to it.
Safety glasses are essential because some of the shot will fly around.
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