Adam Cleaning Logo on Dark Background
Our Tips & Tricks

Deep Cleaning Bathroom and Kitchen Grout and Caulk

March 3, 2024
Deep Cleaning Bathroom and Kitchen Grout and Caulk


Keeping bathroom and kitchen grout and caulk clean is an important part of home maintenance. Neglected grout and caulk can become stained, develop mildew, or crack over time. Deep cleaning grout and caulk helps restore their appearance and prevent more severe damage. In this article, I will provide an in-depth guide on how to deep clean grout and caulk in the bathroom and kitchen.

What is Grout and Caulk?

Grout is a cement-based material used to fill the joints between tiles on floors and walls. Grout allows flexibility in the tile installation and prevents moisture from seeping underneath the tiles.

Caulk is a flexible sealing compound used to fill joints between different surfaces, such as between the tile and tub or between the counter and backsplash. Caulk prevents water from penetrating behind the tile and causing damage.

Over time, grout and caulk absorb dirt, grime, and moisture, causing them to become discolored. Mold and mildew can also grow in dirty grout and caulk. Regular cleaning helps maintain their appearance and function. Deep cleaning is periodically needed to fully sanitize and restore grout and caulk.

Supplies Needed

Deep cleaning grout and caulk requires just a few simple supplies:

  • Grout brush – A brush with stiff bristles designed to scrub inside grout lines.

  • Caulk brush – A small brush to clean caulk joints.

  • Cleaning solutions – Grout cleaner, mold remover, baking soda, vinegar, etc.

  • Scrub pads – For tougher stains or mildew.

  • Spray bottle – For applying cleaners.

  • Old toothbrush – For scrubbing caulk.

  • Microfiber cloths – For wiping up excess cleaner.

  • Rubber gloves – To protect your hands.

  • Knee pads – To cushion your knees when scrubbing floors.

Cleaning Bathroom Grout

Cleaning grout in a bathroom follows a basic process:

Step 1: Sweep or Vacuum

First, sweep or vacuum the tiled floors to remove loose dirt and debris. This allows the grout cleaner to penetrate deeper.

Step 2: Apply Grout Cleaner

Apply a dedicated grout cleaner, mold remover, or a baking soda and vinegar solution along the grout lines. Let it sit for 5-10 minutes.

Step 3: Scrub with Grout Brush

Use a stiff grout brush to scrub the grout lines. Apply pressure and scrub at different angles to clean the crevices.

Step 4: Rinse

Rinse the grout with clean water. Wipe with a microfiber cloth to remove excess moisture.

Step 5: Apply Grout Sealer (Optional)

Sealing clean grout provides added protection against future stains. Use a spray-on grout sealer, applying evenly along the grout lines.

Repeat steps as needed for heavily soiled grout. Pay extra attention to grout around the tub and shower where soap scum builds up. Properly sealed and maintained grout can stay clean for years with regular light cleaning.

Cleaning Kitchen Grout

Kitchen tile grout can get greasy and require heavy-duty cleaning. Follow a similar process as the bathroom using degreasers:

  • Sweep then apply a degreasing cleaner or baking soda paste.

  • Let sit 5-10 minutes.

  • Scrub with a grout brush using force.

  • Rinse thoroughly and soak up water.

  • Apply a grout sealer once fully dry.

Check grout between backsplash tiles near the stove where grease splatters. Kitchen grout needs more frequent scrubbing than bathroom grout due to heavier soilage.

Cleaning Bathroom Caulk

Follow these steps to clean caulk around sinks, tubs, and showers:

  • First, dry scrub with an old toothbrush to remove surface debris.

  • Spray caulk cleaner along the caulk joints. Ensure full coverage.

  • Let the cleaner sit briefly. Scrub with a caulk brush or toothbrush.

  • Rinse thoroughly with clean water.

  • Wipe away excess moisture with a cloth.

For moldy caulk, use a cleaner containing bleach or Tea Tree oil to sanitize. Rinse thoroughly.

Cleaning Kitchen Caulk

Clean kitchen caulk similarly using degreasing cleaners. Apply along the counter-backsplash joints and around the sink. Let sit then scrub with a small brush. Rinse and wipe completely dry.

For extremely dirty caulk, fully remove and re-caulk for a fresh start. Carefully cut out the old caulk before re-applying.

Grout and Caulk Maintenance

For ongoing maintenance:

  • Sweep/vacuum tile floors regularly.

  • Clean grout with mild cleaner weekly in kitchens, monthly in bathrooms.

  • Scrub heavily soiled areas more frequently.

  • Re-seal grout every 1-2 years.

  • Check caulk for cracks and re-apply as needed.

  • Spot clean caulk when dirty. Recaulk if extensive staining/damage occurs.

With proper care, grout and caulk can better withstand the humid, wet conditions in kitchens and bathrooms. Take time to deep clean periodically for healthy, renewed grout and caulk.


Grout and caulk take a beating with regular use in kitchens and bathrooms. Both require occasional deep cleaning to look their best and prevent permanent damage. With the right supplies and techniques, you can sanitize and restore dingy grout and caulk in high-use areas. Be sure to re-seal and maintain cleaned grout and caulk for ongoing protection. Taking steps to properly care for these materials will extend their lifespan and prevent more costly repairs.

Continue Reading
New Posts
Why choose us

With Adam Cleaning, you can expect a team of trained and skilled professionals dedicated to providing top-notch cleaning services. We pride ourselves on our attention to detail and commitment to excellence, ensuring every space we clean is left sparkling.


Your satisfaction is our top priority. That's why all our services come with a satisfaction guarantee. If you're not completely happy with our work, we'll make it right. That's the Adam Cleaning guarantee.

Total Solution

No matter your cleaning needs, Adam Cleaning is your total solution. From carpet cleaning to ironing services, end of tenancy cleaning to garden cleaning, we offer a wide range of services designed to make your life cleaner, simpler, and more enjoyable.

Adam Cleaning White Logo

Sparkling Spaces, Satisfied Smiles.


1 Caxton Close Nottingham,
United Kingdom