Published on Nov 27, 2020 | Updated - Oct 16, 2025

Thinking of Painting Your Grout Lines? Here’s Why You Shouldn’t

Person applying grout paint over dirty grout lines on a tiled floor.

Many homeowners turn to grout paint as a quick and affordable way to freshen up tiled areas. On the surface, it seems simple: add a layer of colour and your grout instantly looks clean and new. However, quick fixes don’t always last. A few years down the track, what looks good today can turn into a frustrating problem for the next homeowner — or for you.

Below is a case study from an Electrodry customer. This outlines why it's not advised to DIY your grout lines.

 

Quick Summary – Why Not Paint Grout

  • Short-lived: Paint wears fast in traffic/wet zones.
  • Hidden hazards: Poor stain resistance, mould risk.
  • Problem masking: Covers damage but doesn’t fix it.

Better option: Electrodry Tile & Grout Cleaning. Book online or call 13 27 13.

 

The Grout Paint Fix That Became a Problem

One of our clients reached out because their grout looked dirty, patchy, and dull, and they wanted to know how Electrodry could help bring it back to life.

As our technician began cleaning, a small section of the grout-line paint began to wear off. This wasn’t a cleaning mistake — it was the first sign that something underneath wasn’t quite right.

The client then mentioned that the bathroom had been renovated by the previous owner, which meant the grout lines had likely been painted before the sale.

Low-quality grout paint can wear down quickly, especially in high-traffic or wet areas like bathrooms and laundries. Over time, that “quick fix” starts breaking down, creating the murky, uneven look the client thought was built-up dirt.

dirty bathroom tile and grout 1

dirty bathroom tile and grout 2

Because this issue didn’t appear during our pre-clean demonstration, there was no visible warning — and no way to predict the paint would lift.

We explained the situation and offered two options: pause the clean and leave the tiles as they were, or continue with the full tile and grout clean followed by Electrodry’s high-quality grout recolouring at an additional cost.

After choosing a grout colour that complemented the tiles, the client asked us to continue, and the technician finished the job.

 

 

Why You Shouldn’t Paint Your Own Grout Lines

Are DIY Grout pens or paint a long-term solution or short-term band-aid?

Grout paint that you can buy from your local hardware store may look good on the surface for a short while but it lacks the quality and longevity a high-quality product provides.

Here are some other reasons we advise against using cheap DIY grout paint.

1. DIY Grout Paint Doesn’t Last

  • Hardware-store grout paint only looks good for a short while.

  • In wet areas or high-traffic zones, it quickly wears off, fades, or peels.

2. Risk of Mould and Bacteria

  • Cheap paint offers little to no stain or moisture resistance.

  • Once the surface wears, grout becomes vulnerable to mould and bacteria.

3. Painting Over Damage Doesn’t Solve It

  • Many people paint over grout that’s already cracked or crumbling.

  • The damage continues underneath, making the grout even weaker.

4. Poor Adhesion Without Proper Cleaning

  • If grout isn’t thoroughly cleaned first, paint just sits on top of dirt and brittle grout.

  • This leads to peeling and ongoing maintenance headaches.

The takeaway from all of this? A fresh coat of paint may brighten the place up, but it isn’t a permanent solution, and someone will deal with the repercussions of this decision in the long run. 

Electrodry’s grout colours are developed using high-quality materials and include a sealant to provide stain resistance for your floors. You have more than 30 colours to choose from, which means you can easily match it to your tiles or even try for something a little different if you’re feeling bold.

 

How does the story end?

One week on, the client is delighted with their freshly cleaned and recoloured grout. The combination of the clean and the new colour has brightened the bathroom and made a noticeable difference to the overall look of the space.

Thanks to the technician’s expertise, our high-quality products, and great customer care, this client — and their fresh-looking grout — got the happy ending they were hoping for.

Electrodry technician applying a colour selant on bathroom grout

bathroom tile floors before and after a cleaning and grout colour sealing

bathroom tile floors before and after a cleaning and grout colour sealing 2

bathroom tile floors before and after a cleaning and grout colour sealing 3

Thanks to the expertise of the technician, our high-quality products and great customer service, this client and their fresh-looking grout got to have their happily ever after.



DIY Grout Paint vs Professional Grout Colouring

Here's a comparison of a DIY paint job compared to Electrodry's professional paint job service:

Feature DIY Grout Paint Electrodry Grout Colouring Why It Matters
Durability 6-12 months 5-10 years Frequent re-dos cost more time and money.
Stain Resistance Low High (built-in sealant) Spills and dirt sink in fast with DIY, but wipe away easily with sealed grout.
Mould Protection Poor Excellent Unsealed grout encourages mould growth, which is unhealthy and unsightly.
Appearance Limited colours, uneven finish 30+ colours, professional finish DIY often looks patchy; pro work blends seamlessly with tiles.
Cost Over Time Higher (constant reapplication) Lower (one-off, long-lasting) Cheap upfront vs true long-term savings.
Effort Required Hours of DIY work Done for you by trained technicians Your time is valuable - DIY means crouching and scrubbing line by line.

With Electrodry, you not only get a professional finish but also protection that keeps your grout looking fresh for years. Need help with Tile and Grout Cleaning? Book Electrodry online or call 13 27 13.

Grant Burchell

Grant Burchell

Business Manager | Home Care Specialist at Electrodry

With over 20 years of hands-on experience, Grant leads Electrodry's national team and still works in the field. His tips are based on real-world know-how – from carpet and upholstery care to mould removal and floor maintenance – all aimed at helping you enhance your space.