Discuss How to tile an internal corner in the DIY Tiling Forum area at TilersForums.com.
I said it first!
I do internal corners of shower areas and along baths with a double bead of silicone.
If you've got grout in the joint at all it won't allow for movement . Now we are not talking about the integrity of the joint but the the stress it can put on the rest of the installation . You are meant to have a movement joint between two abutting surfaces .
In the situation discussed the grout is only cosmetic ,(on the surface, ) any movement, the grout will crack and fail, without comprising the integrity of the joint.
Once had a customer say, when l had finished a shower, “what’s that in the corner” it’s silicone sealant ( normal practice in the situation) bla,bla,bla, . “Don’t like it , get rid of it, l want grout”
Yes mam, using a double edge blade cut the silicone back to the corner , and grouted over to conceal the silicone. No problem.
If that’s what the customer wants.
As I said it's not just about the integrity of the joint you are meant to have a movement joint between two abutting surfaces to stop the installation getting stressed by movement between the two surfaces . Even In a dry corner it should be silicone to allow for movement between the two surfaces .
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