Re-grouting Bathroom shower stall

Hello,

I have a shower that is about 8 years old. Some of the grout has small cracks (not many areas) but the bigger problem is some yellowing and some discoloring.

Instead of trying to use those grout coloring products, I wanted to attempt re-grouting the entire thing and had some questions:

Removing the grout: I'm assuming an oscillating tool would be best. Should I be doing something to protect the tile from any slips? The idea of taping each tile doesn't seem fun

How much grout should be removed in order to allow for the new grout to adhere properly? And should I wait any amount of time with the grout removed before applying new grout? i.e. let the wall dry up really well.

Is there a specific type of grout that should be used for this application?

Last, is there a specific type of caulk to use in the corners and bottom? I read that silicone should not be used for those applications.

Thanks all

 

Once the shower is dry you can proceed, the more grout you remove the better the repair will be.

Hand carbide saw or multi tool will work, no need to tape, it's not going to give you any real protection anyway.

Type of grout depends on the size of your gaps, sanded vs un-sanded.

Silicone is old tech, the newer siliconized latex caulks with micro-ban are excellent, you can pick up generic colors at big box stores or custom caulks at most tile shops to match your grout!

 

Thanks...in terms of type of grout, the gaps are very small. Maybe 1/4 inch in most areas.