July 2026
Your spare bathroom might be one of the cleanest rooms in the house.
The towels are neatly folded.
The toilet sparkles.
The shower hasn’t been used in weeks.
Surely nothing can go wrong… right?
Surprisingly, an unused bathroom can actually develop plumbing problems simply because it isn’t being used.
At Turbo Plumbing Solutions, we occasionally come across issues in guest bathrooms that homeowners never expected. The good news is that most of them are easy to prevent once you know what to look for.
Here’s what can happen when nobody uses your spare bathroom.
The Water in Your Drain Traps Can Dry Out
Every sink, shower and floor drain has a plumbing trap that holds a small amount of water.
This water creates a seal that prevents unpleasant sewer gases from entering your home.
When a bathroom sits unused for weeks or even months, that water slowly evaporates.
Once the trap dries out, unpleasant odours can begin drifting into the room.
If you’ve ever wondered why a guest bathroom suddenly smells despite being clean, this is often the reason.
Rubber Seals Can Dry and Deteriorate
Many plumbing fixtures rely on rubber seals and washers to remain watertight.
When fixtures sit unused for long periods, these components can gradually dry out and lose flexibility.
The next time the tap or toilet is used, small leaks may begin to appear.
Toilets Can Develop Hidden Issues
A toilet that isn’t flushed regularly can develop mineral deposits around moving components inside the cistern.
Over time this can affect the flushing mechanism, leading to running toilets or poor flushing performance.
Simply flushing the toilet every week or two helps keep everything moving properly.
Dust and Debris Build Up
Unused showers and floor wastes can collect dust, hair and debris.
When the bathroom is eventually used again, these materials may contribute to slow drainage or minor blockages.
A quick rinse every now and then helps keep drains flowing freely.
Hidden Leaks Can Go Unnoticed
Because spare bathrooms are visited less often, small leaks may continue unnoticed for weeks.
By the time someone discovers them, water damage may already have affected cabinetry, flooring or nearby walls.
Checking your spare bathroom occasionally is one of the easiest ways to catch problems early.
Mould Loves Quiet, Damp Spaces
Bathrooms naturally experience humidity.
Without regular airflow or use, moisture can linger longer than expected, creating conditions where mould may begin to grow.
Opening windows, running exhaust fans occasionally and checking for dampness can help keep the space healthy.
A Simple Five Minute Routine Can Prevent Most Problems
Looking after a spare bathroom doesn’t take much effort.
Once every couple of weeks:
Flush the toilet.
Run the taps for a minute.
Turn on the shower.
Pour water into any floor drains.
Check for unusual smells or signs of leaks.
This simple routine keeps water in the traps, helps seals stay in good condition and allows you to spot small problems before they become expensive ones.
Servicing Brisbane Northside
Turbo Plumbing Solutions proudly services Albany Creek, Brendale, Eatons Hill, Strathpine, Warner, North Lakes, Bridgeman Downs, Griffin, Aspley, Everton Park and surrounding suburbs.
Whether it’s your main bathroom or one that’s only used by guests, our experienced team can help keep your plumbing performing the way it should.
Even the Bathrooms You Don’t Use Need a Little Attention
An unused bathroom may seem harmless, but plumbing systems are designed to be used.
A few minutes of preventative care every couple of weeks can help prevent unpleasant smells, hidden leaks and unnecessary repairs.
If something doesn’t seem right in your spare bathroom, book a professional plumbing inspection with Turbo Plumbing Solutions at turboplumbingsolutions.com.au.
Make sure you only hire professionals when booking so every part of your home’s plumbing stays healthy, even the rooms you rarely use.
If it has been a while since your plumbing was professionally inspected, now is the perfect time to have it checked.
Book a professional inspection: https://www.turboplumbingsolutions.com.au/book
