Removing epoxy grout residue after a renovation

Epoxy grout is made up of a combination of epoxy resin and filler powders which makes it highly durable, impervious to water, resistant to stains and very easy to clean.

The product has been around for over a decade and has been commonly used in areas which are subjected to harsh conditions.

We have been in the business of construction cleaning for over 20 years and originally, we only encountered epoxy grout in environments like restaurant kitchens and workshops.

However, In recent years, we’ve seen it become a popular choice for homeowners all over Sydney who have chosen epoxy grout over traditional grout due to the obvious advantages such as durability, ease of cleaning and it’s ability to enhance the overall look of the certain types of tiles.

Unfortunately, a large number of the installations we’ve seen have been absolute disasters with multiple defects.

This can be attributed to –

  • Epoxy grout being much more difficult to work when compared to cement based grout (leveling & shaping requires a lot more skill and most tilers don’t have the training to be able to use it properly)
  • The installation takes days to fully cure and must be kept clean during this time which can be difficult if there are still other trades working inside the dwelling (we had a customer grind the floors the day after the epoxy was laid which caused a massive amount of dust to be adhered to the grout)
  • It’s extremely important for the tiler to clean off all the excess epoxy grout during the installation while it is still wet since it becomes extremely hard to remove once it has been allowed to fully cure

How to remove Epoxy Grout Residue or Haze

Epoxy grout can be cleaned fairly easily using the following process as long as it is done within 24hrs of installation –

  1. Make a solution consisting of 10L warm water to 100ml of Vinegar
  2. Apply the solution to your tiles and scrub using a white brush pad to dislodge the epoxy residue from the tiles
  3. Clean up the solution and remove the suspended resins using a heavy duty grout sponge.
  4. This process may have to be repeated a number of times before all the haze comes off
  5. You can also add some silica sand to the tile to help dislodge some of the more stubborn bits of epoxy grout. Make sure you test on a small area first as some tiles can be prone to scratching (this is especially true for wall tiles)
  6. Make sure you rinse well with a lot of clean water once there is no more grout haze left on the tile, failure to do this properly will cause all the suspended grout to go back into the tile once the surface dries.

How to Remove Fully Cured Epoxy Grout

Trying to remove epoxy grout which has been allowed to fully cure can be an absolute nightmare and can get very expensive due to the sheer amount of labour, chemicals and expertise it requires.

There are different chemicals which can be used depending on the type and brand of epoxy grout used for the installation. A chemical which works great for one installation can be completely useless for another so a lot of research and testing will be required before actually starting the job.

At Simpo Cleaning, we’ve used the following chemicals with varying results –

  • Epistrip Epoxy remover
  • Miracle Sealants epoxy grout film remover
  • Aggro Sealer Stripper
  • Aquamix Sealer Stripper with Nanoscrub for extra agitation

There are also times where we will need to use a combination of the above chemicals (ensure you read the MSDS carefully before doing this)

  • The chemicals need to be applied carefully with a brush and allowed some dwell time (5 to 20 minutes) to soften the grout before it can be removed.
  • Use an abrasive cleaning pad to dislodge the grout from the tile surface once it has softened (use small circular motions)
  • Follow up by using a grout sponge to wipe off all the loosened grout and residue (this is an important step and you need to be very thorough as any grout left behind will adhere to the tile again once it dries

For larger areas, you can use a rotary floor polisher with a white coloured buffing pad to assist with the removal process once the grout has softened.

Warning – Do not allow the chemicals to come in contact with any of the brass, aluminium and porcelain in the area which is being cleaned.

10 Responses

  1. Thanks for the tip on using vinegar and warm water to remove epoxy grout residue. Saved me a fortune (recommended cleaner £30+ with postage (I live in the UK). I could not find anyone who stocked it locally and anything I ordered would have arrived after 24 hours of grout application.

  2. Hi. I have had travertine tiles installed as a fibreglass swimming pool coping tile. The grout used has run through the joins of the tiles and down onto the fibreglass leaving residue lines.
    The installer has no intention of coming back to remove the residue, and it has been 6 weeks.
    Is there anything I can do myself to remove the residue, or is it too far gone?

    Thank you, Karen

    1. Hi Karen, you can definitely remove it. In fact, this is something we do every day for our work :). The first thing you you try is applying cleaning vinegar on it as this softens the grout residue so it can be removed easier. If this doesn’t work, then you will need to use a cement grout haze remover such as aquamix cement grout haze remover to do it. A few applications is sometimes necessary. Be very careful to not get it on any other surfaces such as metal since it can damage it.

  3. Hi my name is Mike. I used an epoxy grout on mosaic marble tile. I want to use your product but not sure if I have to be worried about damage to the marble surface? It will be now 48hours post grouting.

    Thank you.

    1. Hi Mike, I wouldn’t use these products on marble as it’s a very delicate material which is easily etched by acidic products. I would call the manufacturer of the tiles and get them to recommend a product.

  4. Hello,
    Our brank new shower floor constructed of marble hexagon tiles was grouted with an epoxy grout that left such a thick haze, looking nothing like the original tile. We were told that the marble was sealed first, but the result is horrible! About six days have passed. Is it too late to correct this mistake?
    Thank you.

    1. Hi Joan, we use a product called Nanoscrub from a company called Aquamix to remove epoxy grout haze from marble.

  5. Hi, I make coasters and such with resin and alot of spillage is on the floor (tiny bits here and there) I used an iron sponge and it just made things worse. Mind you, this residue has been there for a while now.. Sp my white floors now have black stains all over them. I even tried heating the resin and scraping with a spoon. It worked on some parts but still there are so many thin layers of resin and I dont know what to do. Please help me. Please recommend a chemical that I can buy and let me know what to do. Please!! ?Thank you so much.

    1. You can try removing resin stains from tiles by heating the resin with a heat gun and then using a window scraper to remove the stain.

  6. After using epoxy grout on our small hex floor tiles, the tiles seem to be very sticky. There does not appear to be any haze or obvious residue, but when walking across or touching the floor, you can hear and feel that you are sticking to it. It has been about 26 hours since installation

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