Planning to re-tile the kitchen. When I started removing the tiles on the wall above the sink (about 2 x 0.5m), I discovered that behind the old adhesive there is a patch made with some type of mortar. This mortar comes off when I try to chip away the adhesive, and behind this, I find some type of wall built with reed as reinforcement!! The house is from 1929.
What type of mortar should I use to create a new good surface to tile on? The entire surface needs to be redone.
Those of you who know, please give me step-by-step tips on how to solve this!
Thanks in advance!
What type of mortar should I use to create a new good surface to tile on? The entire surface needs to be redone.
Those of you who know, please give me step-by-step tips on how to solve this!
Thanks in advance!
without in any way claiming to be a mason, I think HusFix is what you're looking for. When pre-mixed, it becomes like mortar/thick filler that you can apply with a wide spatula.
Once it has set/cured, you can simply sand away the uneven parts and apply filler on top.
Once it has set/cured, you can simply sand away the uneven parts and apply filler on top.
I experienced something similar when I was renovating my apartment, I took down the paneling in a room and all the plaster on an area of 1.5x2 m fell off 
, the walls were straw-reinforced. I attached a reinforcement mesh in the hole and then used plaster mortar to rebuild the wall, it was quite tricky to get the surface even but on the other hand, it was quite a large hole . Just remember to moisten the joint surfaces before you start plastering.
, the walls were straw-reinforced. I attached a reinforcement mesh in the hole and then used plaster mortar to rebuild the wall, it was quite tricky to get the surface even but on the other hand, it was quite a large hole . Just remember to moisten the joint surfaces before you start plastering.
Husfix should work even in thick layers if I remember correctly. It's easy to rework if you have trouble getting it even. If it's a lot, it might be a cost issue to use plaster instead. If you're not a mason, it's considerably more difficult (and messier) with plaster.
Husfix doesn't shrink in the same way as filler and it's stronger; with filler you have to apply several layers. But it's expensive, you could surely get a big bag of plaster for the same price as a tiny box of husfix. I have personally repaired a similar wall with holes from old tiles using regular mortar; it was my first time plastering and it went quite well. You can apply filler afterward. Otherwise, maybe you could screw on a plasterboard instead?