Submitted by climbtigerfrog t3_zz1htn in DIY
slashfromgunsnroses t1_j2agavk wrote
Reply to comment by [deleted] in What shower caulk to fill a wide (1/2") gap by climbtigerfrog
Silicone is pretty strong and a larger gap actually allows it to absord more movement. With the backer rod it will sit just nicely.
Grout is water permeable and will actually allow water to leak behind causing damage.
Silicone all the way.
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