Large format tiles can give a bathroom, kitchen or living space a clean, modern look, but fewer grout lines do not mean less maintenance. The right large format tile grout installation, cleaning routine and maintenance can help keep your tiles looking fresh for years.
Large format tiles are becoming a popular choice in New Zealand homes because they create a spacious appearance with fewer visible joints. With fewer grout lines, the tile surface looks more continuous and easier to clean. However, every grout joint still needs proper installation and care.
If you already have large tiles and the grout is starting to look dirty, cracked or uneven, professional restoration can often improve the appearance without replacing the entire tiled surface.
What Is Large Format Tile Grout?
Large format tile grout is the material used to fill the joints between large-format tiles and create a neat, finished surface.
Large format tiles can cover a much larger area than standard tiles, so the number of grout joints is reduced. This can make a bathroom wall, shower or kitchen floor look cleaner and less busy.
However, the grout joints still perform an important job. They allow for movement between tiles and help create a finished, sealed-looking surface. In wet areas, correct waterproofing behind the tiles is also critical.
BRANZ explains that tiled showers require careful waterproofing and detailing because poor workmanship can contribute to leaks and costly repairs.
For this reason, large format tile grout should not be treated as simply a decorative filler between tiles.
Why Do Large Format Tiles Need Fewer Grout Lines?
One of the biggest benefits of large format tiles is the clean appearance created by fewer joints.
A standard tiled wall might have many horizontal and vertical grout lines. Large format tiles reduce the number of these lines, allowing more of the tile’s colour, pattern and texture to stand out.
This can work particularly well in:
- Modern bathrooms
- Large shower walls
- Kitchen splashbacks
- Open-plan living areas
- Large floors
- Feature walls
- Commercial spaces
Fewer grout lines can also mean fewer areas where dirt and soap residue can collect. But the grout that remains still needs proper care.
How to Keep Large Format Tile Grout Looking Perfect
Good maintenance starts with the installation, but a simple cleaning routine can make a major difference over time.
1. Choose the Right Large Format Tile Grout
The right grout needs to suit the tile, joint size and location.
Do not choose grout based only on colour. Consider where the tiles are installed, how much moisture they receive and how much daily use the surface gets.
Bathrooms and showers need particular attention because moisture can affect grout and the surrounding waterproofing system.
The Grout Crew offers epoxy regrouting services for homeowners who want a durable and stain-resistant grout finish.
Epoxy grout can be useful in areas exposed to regular moisture, although the correct product and installation method should always depend on the particular tile and application.
2. Keep the Grout Lines Clean
Regular cleaning is one of the easiest ways to keep large format tile grout looking fresh.
Even when you have fewer grout joints, those joints can collect:
- Soap residue
- Body oils
- Dirt
- Dust
- Shampoo
- Mould
- Mineral deposits
Do not wait until the grout becomes heavily stained before cleaning it.
Use a suitable tile and grout cleaner and follow the product instructions. Avoid aggressive cleaning methods that could damage the grout, tile surface or sealant.
For deeper build-up, professional cleaning can restore grout that ordinary household cleaning no longer improves.
The Grout Crew provides professional grout and tile deep cleaning to remove built-up dirt, stains and other residue from tiled surfaces.
3. Do Not Ignore Discoloured Large Format Tile Grout
A change in grout colour can be an early sign that your tiled surface needs attention.
Grout can become darker or uneven in colour because of regular moisture, dirt, cleaning products and general wear.
In bathrooms, persistent darkening may also occur where ventilation is poor and moisture remains on the surface for long periods.
If cleaning does not restore the original appearance, large format tile grout may need professional colour sealing or regrouting rather than repeated scrubbing.
The Grout Crew’s grout colour sealing service can refresh discoloured grout and provide additional protection against stains and moisture.
4. Keep Your Bathroom Well Ventilated
Moisture is one of the biggest challenges for grout in bathrooms.
After a shower, steam and moisture can remain on walls, ceilings and tiled surfaces. Good ventilation helps reduce the amount of moisture that stays in the room.
Where possible:
- Use your bathroom extractor fan
- Keep it running during and after a shower
- Open a window when practical
- Wipe excess water from shower walls
- Keep grout lines as dry as possible
- Clean mould as soon as you notice it
This simple routine can help your large format tile grout stay cleaner between professional maintenance visits.
5. Wipe Down Shower Tiles After Use
A quick wipe after a shower can prevent moisture and residue from sitting on your grout.
A shower squeegee can help remove excess water from large-format wall tiles. This is especially useful when the tiles have a smooth surface and only a small number of grout lines.
Pay attention to:
- Vertical grout joints
- Horizontal joints
- Shower corners
- Around taps
- Around shower niches
- Around the floor-to-wall junction
The goal is simple: remove excess water and residue before it dries.
6. Check Your Large Format Tile Grout for Cracks
Small grout cracks should not be ignored, particularly in wet areas.
Cracked grout can happen because of movement, installation issues, ageing or stress around the tiled surface.
Look for:
- Hairline cracks
- Missing sections of grout
- Loose grout
- Powdery grout
- Gaps between tiles
- Cracked corners
- Dark areas that remain wet
If you notice these problems, have the area inspected before simply applying new grout over the existing surface.
The Grout Crew also provides tile repair services where damaged tiles or grout need attention.
7. Pay Attention to Silicone and Movement Joints
Not every joint around your tiles should contain grout.
Some areas require flexible sealant rather than rigid grout. This can include changes of plane such as wall-to-floor junctions and other areas where movement can occur.
BRANZ highlights the importance of movement control and suitable sealing in tiled wet areas.
This is particularly important when maintaining a large tiled surface because movement can place stress on rigid grout.
If your silicone has become cracked, mouldy or separated from the surface, consider professional replacement.
The Grout Crew provides tile sealing and re-silicone services to help protect tiled areas from moisture and deterioration.
8. Choose a Grout Colour That Is Easy to Maintain
Grout colour can make a big difference to how your large-format tiles look over time.
Very light grout can create a bright, seamless appearance, but dirt and staining may become more noticeable.
A slightly darker or complementary grout colour can make everyday marks less obvious while still keeping the tile design clean.
The best colour depends on:
- Tile colour
- Tile pattern
- Bathroom design
- Amount of natural light
- Amount of traffic
- Cleaning routine
- Type of room
The important thing is to choose a grout colour that complements the tile rather than making the grout lines the main feature.
9. Avoid Harsh Cleaning Products
Strong chemicals can sometimes do more harm than good when used incorrectly.
Do not assume that a stronger cleaner will automatically produce cleaner grout.
Some products can affect grout, sealers, silicone or tile finishes. Always check that a cleaning product is suitable for your particular tiles and grout.
If you are unsure, professional tile and grout cleaning can provide a safer approach.
The Grout Crew uses professional-grade tools and cleaning products as part of its tile restoration process.
10. Check the Waterproofing Behind Large Format Tile Grout
Clean grout cannot compensate for a waterproofing problem behind the tiles.
This is especially important in showers.
BRANZ states that waterproofing membranes are required behind and underneath shower tiling, and that correct membrane application is important for keeping wet areas watertight.
BRANZ also notes that cement-based grout is not itself a substitute for a properly installed waterproofing membrane.
So if you notice:
- Persistent dampness
- Water escaping from the shower
- Damaged grout
- Mould that keeps returning
- Cracked silicone
- Loose tiles
- Water staining
do not simply cover the problem with fresh grout.
Get the area assessed to identify the underlying issue.
Large Format Tile Grout Maintenance: A Simple Routine
You do not need a complicated cleaning schedule to keep large-format tiles looking good.
A simple routine can help:
After every shower:
Wipe excess water from the tiled surface.
Weekly:
Clean tiles and grout with a suitable cleaning product.
Monthly:
Check grout lines, corners and silicone for damage.
When you notice staining:
Clean the affected area before the stain becomes difficult to remove.
When grout starts cracking or crumbling:
Arrange an inspection rather than repeatedly patching the surface.
When the grout becomes heavily stained:
Consider professional grout cleaning, colour sealing or regrouting.
Regular maintenance can help extend the life of your tiled surfaces and keep your bathroom looking fresh.
Can You Regrout Large Format Tiles Without Replacing Them?
In many cases, you do not need to remove good tiles simply because the grout has deteriorated.
If the tiles remain firmly fixed and are in good condition, professional regrouting may restore the appearance of the surface.
The existing grout may need to be removed to an appropriate depth before new grout is installed. The installer should also check for loose tiles, movement, moisture issues and damaged areas before starting.
For homeowners considering an upgrade, The Grout Crew’s epoxy regrouting service provides an option for refreshing existing tiled areas with epoxy grout.
Large Format Tile Grout and NZ Wet Areas
New Zealand bathrooms need careful attention to moisture management and waterproofing.
Under New Zealand Building Code requirements, wet-area finishes need to manage moisture appropriately. BRANZ notes that ceramic or stone tiles with suitable water absorption and waterproof grouted joints are among the finishes covered by E3/AS1 for wet areas.
This means the grout is only one part of the overall system. The substrate, waterproofing membrane, tile adhesive, tiles, grout, sealants and drainage all need to work together.
For new installations or major bathroom work, always use suitable products and follow the relevant manufacturer’s installation requirements.
When Should You Call a Professional?
Professional help makes sense when cleaning no longer solves the problem or when the grout shows signs of failure.
Consider professional tile and grout restoration if you have:
- Deeply stained grout
- Cracked grout
- Missing grout
- Persistent mould
- Loose tiles
- Damaged silicone
- Shower leaks
- Water staining
- Uneven grout colour
- Grout that keeps deteriorating after cleaning
The Grout Crew provides tile restoration services including grout cleaning, grout colour sealing, epoxy regrouting, tile repairs, shower repairs and re-siliconing.
A professional assessment can help determine whether you need cleaning, sealing, regrouting, silicone replacement or more extensive tile repairs.
Final Thoughts: Keep Large Format Tile Grout Looking Clean
Large format tiles can create a clean and modern finish, but the fewer grout lines still need proper care.
The secret to keeping large format tile grout looking good is not simply cleaning more often. It starts with correct installation and continues with regular cleaning, good bathroom ventilation, prompt repairs and suitable sealing.
If your grout has already become stained, cracked or worn, you may not need to replace the tiles. Professional cleaning, colour sealing or regrouting can often restore the appearance of the existing surface.
For New Zealand homes, always remember that grout is only one part of a properly designed wet-area system. Good waterproofing, suitable materials and correct installation are equally important.
Need Help With Large Format Tile Grout?
If your large-format tiles still look good but the grout has seen better days, The Grout Crew can help restore the surface without unnecessary tile replacement.
From deep grout cleaning and colour sealing to epoxy regrouting, tile repairs and re-siliconing, The Grout Crew offers practical tile and grout restoration solutions for homes and businesses across its service areas.
Want your grout lines looking clean, fresh and even again? Request a free quote from The Grout Crew and have your tiled surface assessed by the team.