How to lay floor tiles on a slope?

[ByggaNytt]

Thank you ByggaNytt. Doing as you did with the large slabs might work. But I wonder, was the slope planned according to the slabs you had in mind? I already have an existing slope...

Yes, it was roughly planned that way and the pictures were really just some ideas/inspiration!

 

[Dr.SiC]

I have now talked to the building ceramic council. They are adamant that as soon as you have a waterproofing membrane applied to a certain surface, it must be done according to all the rules of the craft. New drain, all seals as they should be, and so on. He refused to answer whether he agreed with me that it would be risk-free to keep the old drain in a case like yours, which I understand. You simply have to choose whether you want to deviate from the rules. I would not do it, but I work with this.

I think the rules are quite clear, strange that he didn't want to comment on the case when the floor is concrete and no waterproofing exists.

The building ceramic council's industry rules for wet rooms state EXACTLY this:

"The rules apply to the function and application of waterproofing systems on different substrates when tile, clinker, or mosaic shall constitute the surface layer on floors and walls in wet rooms, such as bathrooms and shower rooms in private homes or spaces with equivalent water exposure. The rules also apply to floors in toilets and to floors in laundry rooms as well as for floors in spaces with water heaters (not wet rooms), where the waterproofing is extended a minimum of 50 mm on the wall. (BBR 6:5331) Both new production and renovation are covered by the rules."

Which I interpret as meaning they ONLY apply when waterproofing is involved. In principle, there are no rules when you do not have waterproofing, at least I have not found any. So, you don't need to do a drain replacement either. BUT, check with the insurance company first, after all, it's their interpretation that applies, even if it's wrong!!!

 

[jon_h]

I don't quite understand your post. The original poster is supposed to have a waterproofing layer in the shower corner, and the rules are crystal clear that in that case the drain must be of an approved type. That's what the guy at BKR also said. If you are not supposed to have a waterproofing layer around a drain, there is no reason to replace it (if it's in good condition), neither in practice nor according to any rules.

 

[Dr.SiC]

Now we ended up a bit off-topic, but what about waterproofing on a concrete slab? The laundry room is a combined laundry/shower/sauna with two floor drains. One by the shower and one by the washing machine. I'm going to lay about 25 m2 of tiles in total. Where do I apply the waterproofing? Is it enough near the floor drains? What about the walls near the shower? One wall is built of hollow block and the other two consist of lightweight concrete (blue...). Do these also need waterproofing?

jon_h: I thought we were talking about the drain by the washing machine, no waterproofing is needed there, but by the shower it is.

 

[jon_h]

Whether a waterproof membrane is needed around the floor drain or not is determined by water splashing. If no water will be splashed around the washing machine's floor drain, I agree with you that the waterproof membrane can be omitted there, and thus not replace it.

 

[Dr.SiC]

Yep, agree