Bathroom Mold & Mildew That Won't Go Away?
Cleaning mold only to have it return is frustrating — and unhealthy. Persistent mold means there's an underlying moisture problem that needs a permanent solution, not just surface treatment.
Health Alert: Bathroom mold can cause respiratory issues, allergies, and other health problems. If you see widespread mold or smell musty odors, address it promptly.
Why Mold Keeps Coming Back
Poor Ventilation
No exhaust fan or fan that's too weak/not vented outside
Hidden Leaks
Slow leaks behind walls or under fixtures feeding mold
Porous Surfaces
Old grout and drywall that absorb and hold moisture
Failed Caulking
Gaps letting water behind tiles and into walls
Humidity Buildup
Moisture lingering too long after showers
No Habits
Not running fan during/after showers
Old Materials
Non-mold-resistant drywall and paint
Surface Treatment Only
Cleaning visible mold without fixing the cause
Permanent Mold Solutions
We address the root cause of mold, not just the symptoms. These solutions create a mold-resistant bathroom that stays clean.
Ventilation Upgrade
Install properly-sized exhaust fan vented to exterior. Add humidity sensor for automatic operation.
Waterproofing System
Kerdi membrane or similar waterproofing behind tiles. Keeps moisture out of walls completely.
Grout Replacement
Replace porous cement grout with epoxy grout that's waterproof and mold-resistant.
Mold-Resistant Materials
Replace drywall with cement board or greenboard. Use mold-resistant paint.
Leak Repair
Find and fix all water intrusion sources. Re-caulk tub/shower with quality silicone.
Complete Renovation
Full bathroom gut-and-rebuild with modern waterproofing and ventilation systems.
Prevent Mold from Returning
Daily Habits
- ✓ Run exhaust fan during AND 20 min after showers
- ✓ Squeegee shower walls and door after use
- ✓ Leave shower door/curtain open to dry
- ✓ Wipe down wet surfaces
- ✓ Hang wet towels to dry (not bunched)
Maintenance
- ✓ Re-caulk tub/shower annually
- ✓ Clean exhaust fan cover monthly
- ✓ Check for leaks under sink regularly
- ✓ Use mold-killing cleaners weekly
- ✓ Monitor humidity (keep under 50%)
Frequently Asked Questions
Why does my bathroom keep getting mold?
Bathroom mold persists due to: inadequate ventilation (no exhaust fan or weak fan), water intrusion from leaks or failed caulking, porous surfaces like grout that trap moisture, and lack of proper bathroom habits (not running fan during/after showers). Solving mold requires addressing the moisture source, not just cleaning the visible mold.
Is bathroom mold dangerous to health?
Yes, bathroom mold can cause health issues including respiratory problems, allergic reactions, asthma triggers, eye and skin irritation, and headaches. Black mold (Stachybotrys) is particularly concerning. People with allergies, asthma, or weakened immune systems are most at risk. Persistent mold should be professionally addressed.
How do I permanently fix bathroom mold?
Permanent solutions include: installing a proper exhaust fan (minimum 50 CFM, vented outside), fixing all water leaks, applying mold-resistant paint, replacing porous grout with epoxy grout, using mold-resistant drywall (greenboard or cement board), improving waterproofing in shower/tub areas, and adding a timer or humidity sensor to the fan.
How much does it cost to fix a moldy bathroom?
Contact us for a free consultation and pricing on specific options. Addressing mold early saves money compared to full renovation after extensive damage.
What exhaust fan size do I need for my bathroom?
Exhaust fan size is measured in CFM (cubic feet per minute). Calculate by: bathroom square footage × 1.1. A 50 sq ft bathroom needs minimum 55 CFM. For bathrooms with jetted tubs or steam showers, increase by 50%. Always vent outside (not into attic). Consider fans with humidity sensors that run automatically.
Ready for a Mold-Free Bathroom?
Get a free assessment. We'll identify the source of your mold problem and recommend permanent solutions that fit your budget.