GROUT 101

Grout 101 — Your Introduction to Grout

We’re going to be throwing the word “grout” around a lot, so before we begin, let’s get some of the basic facts clarified.

What is grout?

Grout is the mixture used to fill and seal the gaps or joints between tiles on a tiled surface. Its main functions are to stabilise the tiles and prevent moisture infiltration, but it can also play a big part in the overall look of a space.

How much grout do I need?

Making sure you have the right amount of grout for your project can save you money and headaches — after all, running out of grout midway through laying your tiles is hugely frustrating. This grout and sealant calculator from Mapei takes the guesswork out of the equation — you just need to know your chosen tile dimensions, thickness, grout joint width and the square metres of the space you’re tiling. 

How do you pick the right grout colour for your project?

BLEND, COMPLEMENT or BOLD?

There is no right or wrong answer. It really depends on the look you’re going for. Do you want the grout to blend so the tiling looks seamless? Do you want it to contrast to make a bold statement? Or complement your other tile choices?

BLEND:

Floor: For that seamless look we recommend trying to match your grout colour as close as you can to your tile choice as possible.

TIP: Avoid white for your floor tiles, its just not practical! We suggest no lighter than silver grey

Redfern in Grey used with Mapei Manhattan Grey grout - Project by Future Flip 

White on white…ALL ABOUT TEXTURE AND PATTERN

Whether you’ve chosen a white kit kat tile or a subway for your walls with matching white grout it’s all about the texture and the pattern. We find that white on white will make your room look bigger if it’s a small space you’re working with. But this timeless look doesn’t have to be bland! You can create so many different looks with a white subway or mosaic so play around with layouts! 

Take into consideration white or very light grout will not be forgiving when it comes to stains or discolorations, so it may take a little extra care to maintain that clean fresh look.

Newport Gloss White used with Mapei White Grout - Project by Future Flip 

Complement

So you’ve chosen a tile with multiple colours, find a grout colour to complement all the colours that are on that tile.

Usually the grout colour that compliments most of our tiles are a light grey or silver grey. Light grey compliments those warmer tones as well!

Newport mini in Bone used with Mapei Pink Powder grout in Three Birds house 12 renovation.

BOLD

Make those colours pop with a contrasting grout colour! We love pairing white grout with our coloured tiles and using a darker grout or pops of colour for our lighter tiles to add more depth and interest.

Brunswick Gloss Kit Kat used with Mapei Manhattan Grey Grout - Project by Future Flip 

OK ! I know what grout I want… but how much grout do I need?

Mapei has a grout calculator  online to work out how much grout you will need for your project, it’s as simple as specifying the dimensions of the tile you’ve picked, the thickness of the tile you’ve picked, your grout joint width and  how many square meters your ordering. (make sure to select the ultra colour 5kg bag!)

If you’re still not sure you can contact us at sales@tilecloud.com.au

Size Matters — Decoding Grout Width

Grout width is a critical design and functional element in any tiled space. We cannot overstate how much it influences the overall appearance and maintenance of an area — so it’s important to be informed before you lay those tiles down! 

Wider grout lines can create a traditional or rustic feel, enhance tile patterns and make maintenance more manageable, especially in areas prone to moisture or dirt. Conversely, narrower grout lines produce a sleek, contemporary look — while they generally require greater precision during installation, the payoff is a crisp and clean aesthetic. Your choice of grout width should align with your stylistic preferences, your chosen tile type and the specific demands of your space, balancing both form and function.

Here are a couple of things to consider when thinking about your grout width:

Tile Size

The size of your tiles plays a huge role in determining grout width. Larger tiles typically need wider grout lines to accommodate slight variations in tile size and to provide a balanced aesthetic. Meanwhile, you can get away with narrower grout lines if your tiles are small. 

Tile Type and Style

The type and style of your chosen tiles should influence your grout line choice. Some tiles, such as subway tiles or mosaic tiles, are designed to be installed with narrow grout lines for a more cohesive look, while stone-look tiles may benefit from wider grout lines for better alignment.

Aesthetic Preferences

Grout width has a substantial impact on the visual appearance of a tiled surface. Wider grout lines can create a more traditional or rustic look, while narrower lines offer a sleek, modern appearance. Consider your design preferences and the overall style of your space.

Tile Layout and Pattern

The layout and pattern you want to create with your tiles will have an effect on your grout width. For example, if you're using a herringbone or basketweave pattern, a narrower grout width will accentuate the pattern. Conversely, something like a brick bond pattern works well with wider grout lines.

For more in-depth analysis, take a look at our article on how to decide the right grout width.

The Seal of Approval (and Protection)

Even the smallest grout lines can be susceptible to stains, mould, damage and other undesirable side effects. The solution? A good sealer. This step in the grouting process can save you time, money and sanity in the long run — here are some reasons not to skip it:

Stain Prevention

Grout is porous, which means it can absorb liquids and become susceptible to staining. Sealing creates a protective barrier that repels liquids and stops them from seeping into the grout — and no seepage means no stains. This is especially important in areas like kitchens and bathrooms, where spills and splashes are common.

Mould and Mildew Prevention

Grout in damp or high-humidity areas can be a breeding ground for mould and mildew. Sealing grout helps stop the growth of these ugly and potentially harmful substances, so you can breathe easy and live your best hygienic life. 

Enhanced Durability

Because it has a protective barrier, sealed grout is more resistant to wear and tear. Sealant helps to maintain the structural integrity of your grout lines — so crumbling, cracking and erosion don’t stand a chance. With this in mind, high-traffic areas benefit greatly from a quality sealant. 

Easier Cleaning

Scrubbing? No thanks! Sealed grout is far easier to clean and maintain than its porous, unsealed counterparts. Because it repels dirt and helps prevent stains, you can keep your grout looking cleaner with less effort. Routine maintenance becomes simpler and less time-consuming.

Extended Lifespan

Properly sealed grout is the key to a long-lasting tile installation. By protecting your grout from damage and deterioration, you greatly lower your chances of needing costly repairs or regrouting in the future.

Need more tips? Our article on grout sealers can give you a more detailed analysis as well as some awesome product recs. 

Making Your Grout Go the Distance

The surface area of grout may be small, but that doesn’t mean it deserves less love and attention. In fact, it’s the opposite. Grout is like the glue that holds your tiling design together — so proper cleaning and maintenance are essential. Being diligent with grout care will extend the lifespan of your flooring and save you money in the long run. Here are some handy tips on how to clean and maintain your grout.

Regular Cleaning

• Sweep or vacuum! Start by removing loose dirt and debris from the tiled area. This stops grime from being ground into the grout during the cleaning process.
• Use a pH-neutral, non-abrasive cleaner that's suitable for grout. Avoid harsh or acidic cleaners, as they can damage grout over time. 
• Gently scrub the grout lines using a soft brush, an old toothbrush or a grout brush. Avoid using abrasive materials like steel wool or harsh scrubbing pads, as they can scratch the grout or tile.
• After cleaning, use a damp mop or sponge to remove any product residue.
• Let the grout dry completely before walking on it or applying any sealant — this prevents mould and mildew growth.

Stain Removal

• Know your enemy — identify the type of stain before you try to get rid of it. Different stains usually need specific treatments — food, wine, oil and rust are common culprits. 
• Use stain-specific grout cleaners or homemade solutions tailored to the type of stain. Hot tips: a paste of baking soda and water can help remove food stains, while hydrogen peroxide works a treat on mould or mildew.
• Before using any stain remover, test it in a small, inconspicuous area to ensure it doesn't damage the grout or tile.

Grout Maintenance

• If your grout is not epoxy-based, apply a grout sealer to protect it from stains and moisture. Professionals typically recommend resealing your grout every 1-3 years, depending on usage.
• Keep an eye on your grout for cracks, erosion or signs of damage. Fix issues as soon as possible to prevent further deterioration.
• Consider using mats or rugs in high-traffic areas to reduce wear on your grout lines. Avoid dragging heavy or sharp objects across tiled surfaces.
• Steer clear of bleach or ammonia-based cleaners — they can weaken grout and cause discolouration.

For a seriously sparkling surface, check out our article on cleaning and maintaining grout.

Replacements and Repairs

Even with the best installation and care, sometimes your grout might need replacement or repairs. Here are some tip-offs that your grout isn’t going so great:

• Discolouration
• Cracking
• Mould or mildew
• Loose tiles

If you notice any of these, it’s time to take action! Here are the basics you’ll need to cover.

1. Clean and dry the area (it’ll help with adhesion for the new grout).
2. Remove the damaged grout with a grout saw, removal tool or screwdriver. Be gentle!
3. Mix the new grout — aim for a paste-like consistency.
4. Apply the grout with a rubber float, spreading it evenly and thoroughly.
5. Wipe away any excess while the grout is still wet — use a damp sponge and rinse as you go.
6. Let it dry — give the grout time to cure and harden. Keep the area free from foot traffic until the grout is fully cured.
7. Apply a sealant to prevent stains and make your grout easier to clean.

This is just a brief overview of the steps — for more comprehensive instructions, our guide to grout repair can help.

Grout Troubleshooting: Cheat Sheet

Like most things to do with construction and renovations, you may run into some issues with your grout. Here are some of the most common problems people encounter after grouting their tiles, as well as suggestions on how to fix the issue.

Problem: Cracking

Poor mixing, rapid drying and surface movement can all cause unsightly cracks in your finished grout. 

Fixes: Remove and replace the grout — make sure your new batch isn’t too watery!

Problem: Discolouration

Your crisp, fresh grout is looking faded and lacklustre. Spills, harsh products and poor mixing can all contribute to this issue. 

Fixes: Switch to a gentle cleaner, make sure your grout is sealed properly and address spills quickly. 

Problem: Mildew and Mould

Those pesky black specks on your grout aren’t just ugly — they can pose a serious health risk. 

Fixes: Make sure the tiled area is well-ventilated. Clean the surface regularly with a solution of equal parts water and white vinegar.

Problem: Bleeding Grout

Highly pigmented grout can sometimes transfer colour into surrounding tiles and surfaces — this usually happens if it’s not sealed properly.

Fixes: If a thorough clean doesn’t sort it, you may need to remove and replace the grout. Remember, sealing is crucial!

Problem: Inconsistent Colour

Patchy-coloured grout can be caused by several factors — common culprits include poor blending, using different batches, rapid drying or too much water used in the cleanup process.  

Fixes: Remove the dud grout and replace it all in one go with a new, well-mixed single batch. Try to minimise sunlight exposure or over-wetting during cleanup.

Problem: Adhesion Issues 

Got grout that won’t stay put? This could be due to contaminated surfaces (looking at you, dust!), the grout and tile material being incompatible, or poor preparation.

Fixes: Clean the tiles, remove any loose grout and reapply with a grout that agrees with your tile material. 

These are just a handful of common issues people face with grout — for more help, take a look at our grout troubleshooting guide. As you can see, a lot of these issues are caused during the actual grouting process and not after the fact. This is why diligence, research and preparation are crucial! 

Your Trusted Grout and Tile Experts

At TileCloud, we understand that tiles and grout go together like peas and carrots. Every tile on our website comes with our own personal grout recommendations, so you can be sure of a perfect match every time. On top of these suggestions, our team is also more than happy to offer tailored advice for your tiling journey — our free design appointments give you the opportunity to ask all your burning grout questions to a seasoned design and tiling expert. Got some ideas in mind that you want to test out in situ? Our sample packs are the perfect try-before-you-buy solution.