How to clean ceramics tiles that are covered by calcarium

easy off oven cleaner - works wonders. Old 'apartment living' trick. Used this in the shower stalls whenever I moved into a new apartment. ONce you get it clean (use just like you would on the oven) then you bleach it good and spray bathroom duck on it or you can use a sealant.

What is bathroom duck?

What's throwing me off here is the word "calcarium". Did you mean calcium? I can't find a meaning of the word "calcarium" anywhere. - oops, I did find it after using the alternative google search. It basically means 'salt of the earth'. If you're thinking that there is calcium deposited on your floors, it's probably minerals from your water. I would use a mixture of water, vinegar and a few drops of dish soap. Apply it and let it sit on the bad spots for a while. If you need a bit more, make a paste of baking soda and water, put that on the spots then spray with the vinegar solution. It will bubble, and again let it sit for a bit to dissolve the mineral salts. Wipe everything down with clear water and it should help.

Hello Maria Eugenia Gazaui :) I am not sure where you live but the first link is from Calgary, Canada. I am posting other links below also with ways to remove it. Good Luck and thank you for using HOMETALK for answers :)

https://www.youtube.com/watch?v=uSL8acpDbAU

http://www.doityourself.com/stry/how-to-remove-calcium-buildup-on-a-shower-floor

https://www.naturalhandyman.com/iip/infcleaning/infmineraldeposits.html

https://www.hometalk.com/diy/clean/bathroom/cleaning-shower-tile-amp-grout-what-works-and-what-doesn-t-669909