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Although we can perfectly lay ceramic tiles over old bathroom tiles, it is more common to remove them, replace the pipe and after a new leveling plaster begin to cover the walls. In this video I tell you how to make the strips to smooth the bathroom walls, the most used mortars and some care that you should take into account so that your ceramic or porcelain tiles are perfect. The Maestras Also known as strips are used as a guide or stop to smooth the perfectly plumb mortar on the wall. They are made with bolines or adjusting with the ruler and the help of the level or plumb line to leave the surface very straight. If you have questions watch the video on plastering with screeds on our channel or both in the technical sheet http://www.deladrillo.com/fajas-maest... The Mortar Several can be used in the video and as we usually do on the channel we prepare it in the same work with 5 parts of sand 1 part of hydrated lime and ¼ of Portland cement. But you can use sand and 5 x 1 masonry cement Also 4x1 or 3x1 portland cement with sand Even if you prefer premixed mortars, that's just adding water. That's because no special finish is necessary, we just have to try to leave the surface flat and perfectly plumb. Find more information on the preparation of mortars in • How to make waterproof cement • Proportions to make 3x1 cement or consult the technical sheet https://www.deladrillo.com/morteros-h... Lead and Square They are almost the same when we refer to walls or rather vertical parameters, if the walls are perfectly plumb we will not have square problems when we raise the courses of our cladding. On the other hand, if the lead were shifted, the vertices of the walls would be left with separations or wedges between the joints. It is important to insist on the plumbing of the walls to achieve an optimal plastering job, this must be done at this stage of the plastering, because later unfortunately it will not be possible to correct. If you need more information on the use of plumb lines and levels, I also recommend that you expand with this tool. • How to use the Plumb Line 5 Ways to Ap... If you have found this information useful, share it on your social networks or with someone who thinks it may be of interest. Greetings and thanks. #albanileando #edtag10 Much more content at http://www.deladrillo.com/ Join now and enjoy better content / @edtag Thanks.-