Bathrooms present unique challenges for window treatments. The combination of high humidity, direct water splashes, and temperature fluctuations can destroy unsuitable materials quickly. Yet bathrooms also need excellent privacy and light control. Plantation shutters can be the perfect solution—but only if you choose the right material and understand bathroom-specific considerations. This guide covers everything you need to know.
Key Takeaway
PVC shutters are the best choice for most bathrooms. They're 100% waterproof, won't warp or grow mould, and clean easily. Composite shutters can work in larger bathrooms with good ventilation, but timber should be avoided in wet areas entirely.
Why Bathrooms Demand Special Consideration
Understanding bathroom conditions helps explain why material choice is critical:
Humidity Levels
A typical shower raises bathroom humidity to 70-100%. Even with exhaust fans, moisture lingers in the air. This humidity:
- Causes timber to absorb moisture and swell
- Promotes mould and mildew growth on organic materials
- Can penetrate painted finishes over time
- Creates condensation that drips onto window treatments
Direct Water Contact
Shutters near showers or baths may receive direct splashing. Windows above bathtubs are particularly vulnerable. Even careful users occasionally splash water onto nearby surfaces.
Temperature Fluctuations
Hot showers followed by ventilation create rapid temperature changes. Materials expand and contract, stressing joints and finishes.
Cleaning Requirements
Bathrooms require frequent cleaning with various products. Window treatments need to withstand regular wiping and exposure to cleaning agents without damage.
Material Options for Bathroom Shutters
PVC Shutters: The Clear Winner
PVC (polyvinyl chloride) shutters are purpose-built for wet environments:
- 100% waterproof: Will not absorb moisture or swell
- Mould resistant: Non-porous surface doesn't support mould growth
- Easy to clean: Wipe with any bathroom cleaner
- Dimensionally stable: No warping from humidity or temperature
- Long-lasting: 15-20+ year lifespan typical in bathrooms
Quality PVC shutters are virtually indistinguishable from painted timber at normal viewing distances. They're available in white, off-white, and sometimes custom colours.
PVC Quality Varies
Budget PVC shutters may yellow over time, especially in sunlit bathrooms. Look for shutters with UV stabilisers and warranties of 15+ years. Quality PVC costs more upfront but maintains appearance far longer.
Composite Shutters: Conditional Approval
Composite shutters (engineered wood with polymer coating) can work in bathrooms under certain conditions:
- Larger bathrooms: Where moisture disperses before concentrating near windows
- Excellent ventilation: Powerful exhaust fans that run during and after showers
- No direct splash zone: Windows away from shower or bath
- Quality products: Fully encapsulated with sealed edges
Even in suitable conditions, composite shutters may not last as long in bathrooms as they would in dry rooms. Consider them a middle-ground option rather than ideal.
Timber Shutters: Not Recommended
Natural timber shutters—basswood, paulownia, or other species—are unsuitable for bathroom use:
- Wood absorbs moisture and swells, causing louvres to stick
- Repeated swelling and drying causes warping and cracking
- Paint finishes degrade faster in humid environments
- Mould can grow on and within timber
- Warranties typically exclude wet area use
We occasionally hear of timber shutters surviving in bathrooms, but these are exceptions usually involving excellent ventilation and careful use. The risk of premature failure is too high to recommend timber for bathrooms.
Aluminium Shutters: Overkill for Most
Aluminium shutters handle moisture beautifully but are typically unnecessary for interior bathrooms:
- More expensive than PVC
- Can feel cold in a bathroom environment
- Suitable for outdoor bathrooms or shower enclosures with direct weather exposure
Privacy and Light in Bathrooms
Bathrooms require maximum privacy while still benefiting from natural light when appropriate.
Louvre Angle for Privacy
Plantation shutters excel at bathroom privacy:
- Fully closed louvres block all views in either direction
- Angled louvres can allow light while preventing views into the room
- Adjust angle to let in overhead light while blocking eye-level sightlines
Louvre Size Considerations
For bathroom privacy, smaller louvres (63mm or 89mm) may be preferable:
- Smaller gaps between louvres when tilted
- More complete light blocking when fully closed
- Better proportioned for typically smaller bathroom windows
That said, 89mm louvres work well in most bathrooms and offer a good balance of privacy and aesthetics.
Frosted Glass Alternative
Some homeowners use shutters with frosted/obscure glass for dual privacy protection. This combination ensures privacy even with louvres open for ventilation. However, frosted glass means you sacrifice the view entirely when open—a trade-off to consider.
Ventilation Considerations
Proper ventilation is crucial for bathroom shutter longevity, regardless of material:
Using Shutters with Exhaust Fans
- Open louvres slightly during showers to assist air circulation
- Leave louvres angled after showering until humidity clears
- Ensure exhaust fan runs for 15-20 minutes after showering
Natural Ventilation
If your bathroom window provides ventilation:
- Consider bi-fold shutters that swing fully open for maximum airflow
- Hinged panels allow window access without removing shutters
- Fixed panels work if the window is never opened
Installation Specifics for Bathrooms
Inside vs Outside Mount
Both mounting options work in bathrooms:
- Inside mount: Clean look, but ensure the reveal is deep enough (tiles may reduce depth)
- Outside mount: Better for shallow reveals or windows with tiles extending into the opening
Tile Considerations
When measuring bathroom windows:
- Measure from the tile surface if tiles extend into the reveal
- Account for grout lines which may be uneven
- Drilling into tiles requires appropriate tools and care
- Consider having a professional install if tile drilling is needed
Splash Zone Placement
If shutters will be in a splash zone:
- PVC is essential—no exceptions
- Consider installing a splashback or screen to protect shutters
- Position bi-fold panels to swing away from water sources
Maintenance in Bathrooms
Bathroom shutters need slightly more attention than those in dry rooms:
Regular Cleaning
- Wipe down weekly with a damp cloth to prevent soap scum buildup
- Use standard bathroom cleaners (check they're suitable for PVC if relevant)
- Dry with a clean cloth to prevent water spots
Periodic Checks
- Inspect hinges and mechanisms monthly for any signs of corrosion
- Check for any mould growth (especially in corners or edges)
- Ensure louvres still move freely—sticking may indicate hidden moisture issues
Post-Shower Routine
After hot showers:
- Open louvres to assist ventilation
- Wipe any visible condensation from shutter surfaces
- Run exhaust fan until mirrors clear
Cost Considerations
PVC shutters are typically the most affordable shutter material, which is fortunate given they're also the most suitable for bathrooms. Expect to pay:
- PVC shutters: $300-$450 per square metre installed
- Composite shutters: $400-$550 per square metre installed
Given bathrooms typically have smaller windows, the total cost for bathroom shutters is often quite manageable—perhaps $400-$800 for a typical bathroom window.
Summary: Bathroom Shutter Checklist
Before ordering bathroom shutters:
- Choose PVC material for best durability
- Measure carefully, accounting for tiles
- Consider smaller louvre sizes (63-89mm) for privacy
- Plan for ventilation access if the window opens
- Ensure good bathroom exhaust ventilation
- Commit to regular quick maintenance
With the right material choice and basic care, bathroom shutters will provide years of excellent service—combining the privacy and light control you need with durability that matches the wet environment.