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Snoodini t1_j5lmnmr wrote

Sweden, right? I wonder why you didn't use a waterproofing system before tiling?

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Carbo__ t1_j5mq9jv wrote

I mean, no waterproofing is going to be just as bad as laying concrete on top of.... *checks notes.....concrete board that's on top of foam and sand.

Part of me wants to post this to r/tile.... they'd have a field day.

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Gryllan OP t1_j5na5um wrote

I dont think you know how this works. As i said earlier, you cant rubberize a somewhat damp basement with concrete walls. Concrete needs to breath, especially in basements. And to be real, why do you see a need for a waterproof system in a basement with concrete everywhere? Really no point.

The ground is solid. Thats always a first step, even if you build a parking garage. The 2 layer foams, with boards on top, which are pretty sturdy if youve never worked with one, is kinda tough. And 12mm slab ontop which also filled gaps and what not. Dont be that guy, it holds up my bathtub with no problem, and my daughter jumps and plays without a crack.

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Gryllan OP t1_j5n9ido wrote

You cant use a waterproofing system on concrete walls in a basement. The walls needs to be able to breath. We tested this in this exact bathroom like 8 years ago. We used the kiilto rubber in the shower and on the wall. But the concrete gets a little damp sometimes so the rubber comes off. Its a different story building in a basement than a new drywall - box

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