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Fixing Grout?

Hello, I need your help! My brother offered to regrout my shower and I gave him the silicone that I had on hand (I use it for crafting) which turned out to be clear. I mistakenly relied on his "professionalism" to do the job right. He grouted over existing grout and now it has mold embedded and that's all I see. It takes me several hours to clean and I can't get the mold to disappear. What should I do? It's driving me crazy!

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Bronze Feedback Medal for All Time! 196 Feedbacks
December 4, 20200 found this helpful
Best Answer

Do you have one of those edging things (can't remember the exact name) to pull the bad stuff out and then you can make a mixture of vinegar 2 parts baking soda to 1 part vinegar (it should be like cake icing--add by the tablespoon hot water if it is too thick--do not make it too runny) and put it in where there is mold. Let it sit for 30 minutes. Rinse and repeat. It will need to be totally dry before you can attempt to regrout it the right way with the proper grout (a non clear one that is specific for bathrooms).

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Silver Answer Medal for All Time! 425 Answers
December 4, 20200 found this helpful
Best Answer

Sorry to say, but you're going to have to remove the silicone and old grout, bleach out the moldy stuff, rinse, dry then regrout or recaulk. Those little silicone grout squeegies are handy, but the back of a plastic spoon works really well too, to follow along the grout lines and make them look nice and neat....it's a fairly easy DIY.

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Just be aware that silicone stinks terrible till dry, so wear a mask, use a fan to blow the smell out of the room---out a window is best, and if the bathroom has an exhaust fan, use it too. Good luck on your project.

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Silver Answer Medal for All Time! 320 Answers
December 4, 20200 found this helpful

I believe if you google "Silicone Remover Scraper Sealant, Caulk Caulking Grout Removal Tool" you'll find a tool for sale and a how-to video. I don't want to promote product names but I think you'll find what you need for under $25. And don't let your brother near it! haha! :-)

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Bronze Post Medal for All Time! 140 Posts
December 5, 20200 found this helpful

This needed to be started with a thorough cleaning of your tile and grout. If using clear, it needs to be clear (grout made for bathroom tile). This tile is made for the bathroom and will hold up better under moisture.

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This will have to be retreated and cleaned. Not healthy to to process over mold. - projects.truevalue.com/.../regrout_bathroom_tile.aspx

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Bronze Post Medal for All Time! 105 Posts
December 5, 20200 found this helpful

The best way to get this fixed is to try and safely remove the existing grout that is between the tiles. This is going to be a very messy job and will take quite a bit of time to get this out. They have special hammers that are rubber for working on the tile so that you don't crack the tile. You will need to get a tool that can fit in the groves of the tile and start to slightly tape on the area to get the tool inside.

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Once inside the two pieces of tile will give you a guide for the tool so that you can tap your way across and remove the existing grout.

Once cleaned out now you have to grout the tile again. They have grout cleaners but if you have mold inside the grout it is best to remove it and start again.

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Gold Feedback Medal for All Time! 949 Feedbacks
December 5, 20200 found this helpful

I do not know how large an area you have but this could be a time consuming job.
There are several grouting tools available but you'll have to decide which is best for you and the work you will have to do.
www.google.com/search?client=firefox-b-1-d&biw=1408...

Since this type of stuff may be new to you, I would suggest doing a lot of reading before starting this project.

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A good idea would be to be sure no one will be needing to use this area for several hours or even a day/night.
This will be a very dusty job so be sure you have a couple of good masks as you do not want to breath any of this dust.

I'm a great fan of finding someone that knows what I'm trying to do and can help me select the right tools and the correct products that I will need to do a first rate job.
I usually go to my local Ace or True Value hardware store as they usually have very knowledgeable employees that are always helpful and can guide me all the way through a project.
They will have everything you need to do this job (although PGHgirl's cleaning solution is excellent).

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Gold Post Medal for All Time! 677 Posts
December 6, 20200 found this helpful

You need to scrape out all the silicone and moldy grout, then apply new grout. After 30 days, seal the grout.

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