5 ms·

Neither is grout. Grout is water permiable. You shower is water proof from the water proof backing we install the tile on top of. Cement board + roll on or som

Neither is grout. Grout is water permiable. You shower is water proof from the water proof backing we install the tile on top of. Cement board + roll on or something like kerdi system. https://youtu.be/B5DVpruLygw?si=jD8eMHHGQoWG4hI2 https://youtu.be/B5DVpruLygw?si=jD8eMHHGQoWG4hI2

tpm 2mo ago
right, but lime will be washed away by the water if no waterproof layer is added
- iknownothow 2mo ago
  It is not lime as in the fruit, it is lime as in the material (CaOH2). Lime the material is the binding agent in lime plasters. It is not likely to get washed away.
  - tpm 2mo ago
    caoh2 is water soluble (slightly). the question was about anti-mold properties and it is commonly used for these properties in paint for example in cellars but it will lose these properties when too wet. so it's not used in bathrooms.
    - iknownothow 2mo ago
      Sure but lime plaster can be used in bathrooms on the non shower walls as there's no running water but lots of moisture/humidity which leads to mold growth. As far as using it in the grout behind tiles, you may have a point. I'm considering applying lime wash between the tiles regularly but not sure what the results will be.
- dredmorbius 2mo ago
  I suspect the term you were looking for in your original comment was insoluble, that is, a substance not (readily) dissolved into water. Concrete is insoluble (it won't wash away, contrast with lime), but not water-proof.
Moto7451 2mo ago
This is why you pay the premium for epoxy grout. When we redid our house we used only epoxy grout and cleaning it as as simple as using a foaming tile spray.
- gravypod 2mo ago
  This is not always a great idea. Especially if you have a water proofing membrane that allows drying out. You never want to trap moisture in a cavity. You want to be able to dry into the wet side.
DANmode 2mo ago
My shower is waterproof because it’s a one-piece insert made of plastic. Other shower materials that aren’t absolutely insanely stupid include glass, quartz, and other non-porous materials. Because biology.

tpm 2mo ago

right, but lime will be washed away by the water if no waterproof layer is added

iknownothow 2mo ago
It is not lime as in the fruit, it is lime as in the material (CaOH2). Lime the material is the binding agent in lime plasters. It is not likely to get washed away.
- tpm 2mo ago
  caoh2 is water soluble (slightly). the question was about anti-mold properties and it is commonly used for these properties in paint for example in cellars but it will lose these properties when too wet. so it's not used in bathrooms.
  - iknownothow 2mo ago
    Sure but lime plaster can be used in bathrooms on the non shower walls as there's no running water but lots of moisture/humidity which leads to mold growth. As far as using it in the grout behind tiles, you may have a point. I'm considering applying lime wash between the tiles regularly but not sure what the results will be.
dredmorbius 2mo ago
I suspect the term you were looking for in your original comment was insoluble, that is, a substance not (readily) dissolved into water. Concrete is insoluble (it won't wash away, contrast with lime), but not water-proof.

Moto7451 2mo ago

This is why you pay the premium for epoxy grout. When we redid our house we used only epoxy grout and cleaning it as as simple as using a foaming tile spray.

gravypod 2mo ago
This is not always a great idea. Especially if you have a water proofing membrane that allows drying out. You never want to trap moisture in a cavity. You want to be able to dry into the wet side.

DANmode 2mo ago

My shower is waterproof because it’s a one-piece insert made of plastic. Other shower materials that aren’t absolutely insanely stupid include glass, quartz, and other non-porous materials. Because biology.