Bathroom Grout Deep Cleaning

Goal

Restore the color of bathroom grout lines (shower walls, tile floor, around tubs) that have darkened from years of mildew + soap scum buildup. This is a separate service from regular cleaning - 60 - 90 minutes per bathroom of focused work, billed accordingly. Customer feedback is dramatic; the bathroom looks "new again."

Prerequisites

• Grout brush (stiff bristles, narrow profile fits the grout lines)
• Oxygen bleach (OxiClean) OR commercial grout cleaner OR bleach pen
• Hydrogen peroxide (for whiter grout)
• Grout sealer (separate quote; recommended after cleaning)
• Drop cloths + plastic sheeting
• Ventilation: fan + open window minimum
• 60 - 90 minutes per bathroom

Steps

1. Customer briefing. "I'll deep-clean the grout lines. Set expectations: improved color, not exactly like new. New grout (regrouting) is a separate service if you want that level."
2. Test in an inconspicuous area first. Some grouts are sealed or have absorbed staining beyond chemical reach. Verify before applying chemistry to the whole area.
3. Pre-rinse the area with hot water - opens the grout pores + softens deposits.
4. Apply cleaner of choice:

• Oxygen bleach paste (OxiClean + water to make a paste): apply to grout, let dwell 10 - 15 min, scrub
• Chlorine bleach (only on white grout; will discolor colored): 1:4 bleach:water; apply, dwell 10 min, scrub, rinse heavily
• Hydrogen peroxide: spray on, dwell 10 min, scrub. Combine with baking soda for paste applications.

1. Scrub each grout line with the grout brush. Work systematically; don't skip around. Light pressure with the brush works better than aggressive pressure (which can damage the grout face).
2. Rinse thoroughly. Hot water rinses; cleaner residue causes future staining if not removed.
3. For stubborn stains:

• Repeat the cleaner application
• Try a different chemistry (peroxide for stains, bleach for biological)
• Steam cleaning provides extra heat + agitation

1. Allow to dry fully - 24 hours typical before any sealant.
2. Apply grout sealer (separate quote, often add-on). Penetrating sealer extends the clean appearance + makes future cleaning easier. Customer pays for it once; saves them on future cleanings.

Verification

• Grout lines visibly lighter + cleaner than before
• No streaks of cleaner residue
• Surface dry within 24 hours after final rinse
• Customer signs the field report
• Before/after photos documented

Troubleshooting

• Grout still discolored after multiple cleanings: dye stains absorbed into porous grout OR severe etching. Grout color restoration (a stain-and-seal combo product) is the next option; otherwise regrouting.
• Bleach turned grout pink: bacterial contamination interacting with bleach. Treat with hydrogen peroxide instead; bleach can permanently set the discoloration.
• Grout chunks coming loose during scrubbing: grout is failing structurally. Refer customer for regrouting; cleaning won't extend it.
• Color difference between cleaned + uncleaned areas: clean entire bathroom at once, not just visible areas. Otherwise the contrast is dramatic.

References

• IICRC S210 (Stone, Tile, and Grout Cleaning Standard)
• Manufacturer cleaner + sealer literature
• Manuall internal: Standard Residential Cleaning Service, Cleaning Chemical Compatibility Reference