![]() just depends on how your removal work turns out.Īgain this will be dependent on you as to if you want or need to replace / repair a section. Lightly sand and you will be fine.īecause your back splash is about the location of the divide between upper and lower wall - replacing the entire dry wall would require both upper and lower drywall sections (for that kitchen about 10-12 boards $150.00) - not hard and not very expensive. ![]() When sanding concrete with diamond sanding pads, it is best to start with coarse grit for maximum material removal and to work your way up through the finer grits. Apply light pressure at first and increase the pressure as needed. If it is in an area where the new back splash will not cover - apply a very thin layer of joint compound in multiple steps with a 6" - 8" wide putty knife. Work methodically from one side of the surface of the concrete to the other. Thinset/mastic liek normal it will cover it and protect it. Here is a step-by-step guide for removing unsightly mortar from concrete. Yet, when you need to remove it, it can be a nightmare. And, its great for creating durable surfaces. If the new backsplash will be covering it: Just use your Mortar is a cement-based paste that is used for binding building materials like bricks, tiles, and stones. If a bit of the dry wall paper comes off : You can then come back with high grain sand paper if need be. The process is to first scrape it with a scraper and then use a razor scraper - very time consuming and it will not be perfect. He now has a nice click lock wood floor that is much warmer feeling than the porcelain tile that was down there.Sanding is not a good idea as the material you are trying to sand off is known as thinset or mastic it is a mortar like cement by the time you sand it off you will most likely damage the dry wall. I could have done it with a pole scraper/chipper but then it would have been hard work and probably taken longer and a few more beers. For me the hard part is being on the ground after 18 knee surgeries including both of them being replaced, so if a great grampa can do it it’s not that bad with the right tools. Our total time under 8 man hours and that included a few beer breaks. The total time including mopping up was just over 4 hours and to be honest the hard part was scooping all the tile and grout up but my friend did that. I use a pillow case on the discharge of my belt sander and this helps to control the dust (this is the messy part, I recently helped a friend do a 34x16 room I had all the tiles popped in about an hour, I started grinding with the belt sander while the tiles were being removed by my friend.įirst pass was just over 2 hours and 5 belts., I had planned to acid etch the entire floor with muriatic acid and water but my friend was happy with the results just sanding (muriatic acid helps to break up the remaining thinset and would have made is smoother close to the original finish of the slab). Thinset is quite soft and an 80 grit aluminum oxide belt takes the bulk of the material off quickly. I actually find my belt sander is best for this. Once the tiles are all picked up and discarded I clean up the thinset. I can pop thinset mounted tiles off with little time and almost no effort.Ī pole chipper is almost as fast but a lot of work, (mastic glued tiles are harder and usually the tiles break more often. I use a air chisel wide blade for a large area.
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