How to Remove Dried Grout from Backsplash

Removing dried grout from a backsplash can seem like a daunting task, but with a little effort and the right techniques, it can be done successfully. Here are some tips on how to effectively remove dried grout from your backsplash.

Why Grout Dries Out

Grout is the material used to fill in the seams between tiles on your backsplash, shower walls, and flooring. It is a mixture of cement, sand, and water that hardens to bind the tiles together. Over time, grout can become dried out due to:

  • Normal wear and tear
  • Exposure to moisture
  • Improper application
  • Inferior grout quality

As grout dries out, it shrinks and cracks, causing those unsightly lines on your once-pristine backsplash. Dried grout also provides an entry point for water, leading to potential leakage and other problems. That’s why it’s important to know how to remove old, dried grout when necessary.

Cleaning vs. Regrouting

Before attempting to remove all of the dried grout, first try simply cleaning it. Mix a solution of warm water and dish soap or an all-purpose cleaner. Use a soft brush or toothbrush to gently scrub the grout lines. This may remove some surface dirt and grime to freshen it up.

However, if the grout remains cracked, powdery, or uneven after cleaning, you’ll need to fully remove and regrout it. Don’t just apply new grout over the old – this can lead to issues down the line. Completely removing all old grout is the best practice.

Necessary Tools and Materials

Regrouting requires more equipment and supplies than just cleaning. Gather the following before starting:

  • Grout saw or rotary tool with grout removal blade
  • Hammer and chisel – use a masonry chisel for best results
  • Grout rake
  • Sponges
  • Bucket of water
  • Grout sealant
  • Caulk gun
  • New grout

Safety gear like eye protection, gloves, and a dust mask are also recommended.

Step-by-Step Process

With the right tools in hand, follow these steps to successfully remove dried grout:

Prep the Area

Clear your backsplash of any dishes, utensils, towels, etc. Have a workspace ready nearby to hold your tools and supplies. Cover any surfaces below with tarps or plastic sheeting.

Loosen the Grout

Use your grout saw or rotary tool to cut along the grout lines. Don’t dig too deeply into the grout to avoid damaging the tile. The purpose is just to break the grout seal.

Alternate the sawing motion by working in a checkerboard pattern. Some stubborn spots may need extra passes with the saw.

Remove the Grout

Once the grout seal is broken, switch to the hammer and chisel. Carefully chisel out the grout in small sections. Tap lightly to avoid cracking the tiles. Apply enough force to fully clear out each section down to the bottom.

Use the grout rake to scrape out any remaining debris in the grout lines. Rinse with water and sponge away dust.

Clean and Prep for Regrouting

Wipe the entire backsplash with water to remove residual dust. Allow it to fully dry before regrouting, checking with a moisture meter if needed.

Use grout sealant on the tile edges and corners per the manufacturerâ€TMs directions. This helps the new grout adhere properly.

You’re now ready to apply fresh grout using a grout float. Push it firmly into the clean grout lines. Wipe away excess grout with a damp sponge in a diagonal motion.

Cure and Seal the New Grout

Allow at least 72 hours for the new grout to cure. Avoid getting it wet during this time.

Once cured, apply a penetrating grout sealer using a clean, lint-free cloth. This provides an invisible seal to protect the grout from moisture and stains.

Reapply the sealer once a year for best results. Your regrouted backsplash will now look fresh and new!

FAQs About Removing Dried Grout

Still have some questions about tackling dried grout removal and regrouting? Here are answers to some frequently asked questions:

How long does the grout removal process take?

The time needed depends on the size of your backsplash, but plan on spending at least a few hours. Removing grout takes patience and care. Rushing through can damage the tiles.

Does all of the old grout need to be removed?

Yes, it’s important to fully remove dried, damaged grout down to the bottom of the grout lines. Any grout left in place can prevent proper adhesion and lead to issues with the new application.

Can I use vinegar or baking soda to remove grout?

Vinegar, baking soda, and other household products are not effective. The best method is using proper grout removal tools and manual elbow grease. Harsh chemicals can damage the tiles.

Should I regrout the entire backsplash or just sections?

It’s best practice to regrout the entire backsplash wall for a consistent appearance. Spot regrouting sections can lead to color variation once the new grout dries.

How soon can I get the backsplash wet after regrouting?

Don’t get the regrouted area wet for at least 72 hours. This allows the new grout to fully cure. After that, avoid excessive moisture for another week.


Removing dried grout takes some work, but following these steps carefully will allow you to successfully refresh your backsplash. The results are well worth the effort! Regrouting restores the backsplash to a like-new appearance and prevents potential leakage or damage. With the right tools and techniques, this is a DIY project any homeowner can tackle. Just be sure to take your time and exercise care when scraping out the old grout.