Good evening!
I have been advised several times to install new floor tiles with a slight slope toward the drain.
For my project, I definitely need to plan for a height difference of at least about 3 cm (1¼ inches) over a length of 180 cm (6 feet).
It would probably be much easier to lay the new tiles over the old ones. However, this would create a rather high threshold at the door. I will have to deal with some kind of threshold anyway.
If I remove the old tiles, how much lowering should I expect?
What would you recommend?
I have been advised several times to install new floor tiles with a slight slope toward the drain.
For my project, I definitely need to plan for a height difference of at least about 3 cm (1¼ inches) over a length of 180 cm (6 feet).
It would probably be much easier to lay the new tiles over the old ones. However, this would create a rather high threshold at the door. I will have to deal with some kind of threshold anyway.
If I remove the old tiles, how much lowering should I expect?
What would you recommend?
H
Hausbau4227 May 2026 02:07Here is my report ;-)
The roughly 24mm (1 inch) pipe – at least drilled freely and sealed again with waterproof joint mortar.
Will it make a difference? We’ll see... Probably (considering the effort versus benefit) a thicker pipe is usually more effective.
Maybe I can manage with a 32mm (1 1/4 inch) – or even better 40mm (1 1/2 inch) diameter pipe – on the house facade after all...


The roughly 24mm (1 inch) pipe – at least drilled freely and sealed again with waterproof joint mortar.
Will it make a difference? We’ll see... Probably (considering the effort versus benefit) a thicker pipe is usually more effective.
Maybe I can manage with a 32mm (1 1/4 inch) – or even better 40mm (1 1/2 inch) diameter pipe – on the house facade after all...