How to Renew Dirty Bathroom Grout

It’s kinda crazy the things you do & think about when you’re a new homeowner. Like when I gaze at the ceiling when relaxing on the couch and think…I should really touch up the paint on the ceiling in the corner. Or when I scan the our hardwood floors looking for nicks or dents & suddenly question why the heck I purchased those new spiky boots. Or when I’m checking out our guest bathroom and immediately zone in on the dirty grout lines in between the floor tiles.

Yep, my attention to detail was not the same back when I was a renter. Now I feel like I have a duty to maintain every crack & crevice in our home. It’s kinda crazy. I’m guessing this motivation will eventually wane, but in the meantime I’m taking advantage of this urge to make everything in our home better.

So that brings us back to those dirty grout lines…4-dirty-grout-how-to-clean

On the edges of the floor you can see that the grout used to be a fresh off white color. But with heavy foot traffic, those lines got NASTY. Stained, dirty, and full of yuckiness. Instead their once crisp color had turned much darker.2-polyblend-grout-renew

Determined to bring those grout lines to their former glory, I purchased this $10 bottle of Polyblend Grout Renew. We used it on the DIY show I produce, and the results were amazing. I just knew that I had to give it a try in my own home. 1-snow-white-grout-renew-polyblend

There are tons of colors to choose from, but I ended up going with “Snow White,” because it matched the color of a tiny section of clean grout and I wanted to make it look fresh & new again. Not only does this stuff change the color of your grout, but it also seals against future stains and inhibits mold & mildew growth. Great perks if you ask me..but honestly I was most excited about changing the color of the dirty bathroom grout. 6-cleaning-bathroom-floor-grout-tile

Following the directions on the back of the bottle, I first cleaned the floor & the cracks in between each tile. I just used a water & vinegar combo and scrubbed it well with a brush.

7-grout-renew-painting-grout-tiles-bathroomWhen the floor dried, I got to work painting on the grout renew. I used a couple different instruments before settling on a small craft paint brush.

  • Toothbrush – Proved to be too wide for our small crack lines, so things turned messy fairly quickly
  • Paint Brush – I used one that you would use on a wall to cut in the corners. Again, too wide for our small cracks.

A cheap-o craft paint brush proved to be the winner as it could easily get in the crack.8-renew-bathroom-grout-clean

Here are the simple steps: Dip your brush in the grout renew and paint it onto the crack. Do your best to avoid getting it on the tile. This stuff dries pretty quickly, so I did about 2 lines and would then wipe it up with a small bit of toilet paper to prevent it from drying on the tile surface. Go slooooow and check your work as you go. Also keep that little wad of toilet paper on hand. Things can get pretty messy.1-grout-after

Below the before again…


And the after!


The footprint of our guest bathroom is small. Like really small. But it still took me over an hour to get all of the grout lines looking good.  I blasted some music, had a glass of wine, and just hunched on over to get ‘er done. A few areas were reaaaaallly dirty. So I actually painted a second coat right on over my work once it dried. Every now and then I would step back to check my work and see if any areas needed more grout renew, with the middle of the bathroom needing the most attention. 4-white-bathroom-tile-grout

You’ll then want to let the space dry for at least 24 hours, and then maybe even wait a couple more days before you fully use that area again.

3-tile-floor-bathroom-groutIt was a time-consuming & incredibly tedious project, but the results are amazing. Everything looks much crisper & cleaner in there already! Who knew a little bottle could transform an entire room?!

1-guest-bathroom-augusta-after-groutAnd with a price tag around $10…you really can’t beat the big impact you get from this simple DIY project. Clean bathroom Groutcasey_sig

  • Andrea Pepe

    I used this on my entire kitchen last year. If you do spill or it gets dirty, it is super simple to just wipe up with water and the grout is back to the white.

    • That’s so good to hear Andrea! Happy to know that the upkeep is easy!

  • Lauren J

    I’ve heard wonders about this product and actually bought some this summer but haven’t gotten around to using it. Maybe your transformation will finally motivate me!

  • Kaitlyn

    Holy moly ! This is incredible! Buying this now!

  • Kara D

    I’ve used this stuff on my foyer entry after I found out YHL used it for theirs. I have the same slate flooring that they did. I didn’t seal it, and yet, after 2 winters in western NY (read: a lot of snow and salt), it still looks fantastic! It’s totally worth the painstaking hours to paint it all in! Must have that music blasting and drinks on hand!

    • That’s so good to hear Kara! And I totally agree…well worth the time (especially with wine & Netflix to keep you company!)

  • Trang

    Can you use this for shower tiles?

    • Trang….great question!!! I just did a bit of research and can’t find a firm answer. On the polyblend website it only says this product shouldn’t be used “underwater.” But I do know that it’s used for cement grout lines, and that when used it fully seals the grout.

      So sorry I don’t have a better answer! Might be a good question to ask at the hardware store if you go to buy it!

    • Jackie B

      I would say no because this product is thick water based paint. It eventually washes away when you scrub your floors. The product really doesn’t “renew” the grout, it covers up the old grout with paint. I initially tried this product, but eventually used grout stain after all of the paint washed off the grout lines a year or so later.

    • Jackie,
      I’m sorry the product didn’t work well for you! That stinks. It is water-based stain & sealer, and it definitely shouldn’t wash away when you scrub. It changes the color like a paint would, but it also seals the grout & prevents mold and mildew. So well worth it for my grout situation.


  • Dianna Leyton

    This is the exact post I needed to see! I just moved into an older house and I’ve been meaning to jazz up and clean our bathroom tiles. It’s so encouraging to see it’s not so hard at all! Thanks for posting this!

    • Dianne, happy to help! It’s time-consuming, but easy. It will give your older home a fresh new look.