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What’s The Best Grout For Porcelain Paving (UK) In 2024?

This review will reveal the best grout for porcelain paving in 2024.

Grouting the joints in a porcelain patio installation is essential. Not only does it provide a waterproof seal and prevent weed growth, it also offers aesthetic appeal and completes the look of your new patio.

Over the years, we’ve seen porcelain slabs ruined by applying the wrong products. This is an expensive mistake, making choosing the best external porcelain grout a big responsibility. Don’t worry; we’ve got it covered.

Nexus ProJoint porcelain paving grout is perfect and incredibly easy to use. The added silicone makes it flexible. It produces an excellent finish, and unlike some grouting products, you can walk on it after about three hours, and it is fully cured in 72 hours at 20 degrees. 

Top Brush In Grout For Porcelain Paving

Porcelain flags aren’t cheap, and there are a few issues that can affect your patio if the joints aren’t filled, for example, weeds popping up and water seeping under the non-porous porcelain and freezing, causing the slabs to shift. 

Keep reading for the complete lowdown on the most popular outdoor porcelain paving grout options.

Created specifically for porcelain paving, this 20kg kit is perfect for grouting porcelain slabs with 2-20mm joint spaces. 

The high-performance formula uses anti-mould technology, the benefits of which speak for themselves. It’s also water-repellent whilst allowing vapour to permeate the grout. 

Depending on the slab size, you can expect between 31 and 62 square metres of coverage from this 20kg kit.

The two bags come in a convenient bucket, which can be used as a mixing vessel when grouting your porcelain paving. 

Nexus ProJoint Porcelain


  • It comes in 4 colours (Neutral/Buff, Black, Basalt and Mid Grey)
  • Ready to mix – no fuss 
  • It can be used both indoors and externally.


  • Not the cheapest grout for porcelain slabs

Azpects are renowned for its quality paving solutions, and this EASYGrout porcelain paving slurry grout is no exception. 

This cementitious slurry is extremely easy to use. Simply mix in the tub and brush on. The rapid set formula produces a finely textured finish that perfectly compliments most exterior porcelain slabs and is also impermeable and frost-resistant.

You can expect an estimated coverage of between 5m2 to 21msq. Of course, this will depend on tile size and thickness as well as the joint depth and width.

EasyGrout Light Grey Porcelain Paving Grout


  • Three colours are available (Natural, Light Grey and Dark Grey)
  • Ideal for joints 5mm-25mm in width and at least 20mm deep
  • 3 x 5kg bags ensure minimal waste 


  • Some reviews mention variations in colour

This premium quality exterior porcelain grout is suitable for professionals and home DIY enthusiasts and is one of the easiest to apply. Filling your porcelain patio’s nooks and crannies couldn’t be easier. 

It can also be applied at any time of year, and, unusually, when it comes to landscaping products, the wetter the weather, the better. Simply brush the grout into the gaps, then saturate with water (you can use a hose too) 

Unlike many other jointing compounds and grouts for porcelain, Easy Joint is an eco-friendly product that produces barely any waste.

Any unused product can be stored in water in the container for up to 12 months. 



  • More colours to choose from 
  • Doesn’t stain or mark porcelain paving 
  • Great reviews 


  • Reviews say it may not stand up to jet-washing 

How To Choose Porcelain Paving Grout

There are several factors to consider when selecting good porcelain paving grout, so let’s have a closer look at some of them: 


When choosing outdoor porcelain tile grout, colour is significant. Pairing a dark grey grout with a warm-coloured beige tile can make your paving pop. Whereas a matching colour gives a sleek contemporary seamless look 


By its very nature, Porcelain is a durable and long-lasting material, so the last thing you need is your grout cracking and crumbling away after a few years. Epoxy grouts will undoubtedly last time, but we’ve also seen fantastic results with slurry and brush in grouts when applied correctly. 


As mentioned above, you want your porcelain grout to last as long as your patio, so it must withstand adverse weather, staining and discolouration. Do you use a jet wash? If so, check the reviews; not all exterior grouts can withstand regular power washing! 


If you have a tiny patio, the cost of grouting porcelain tiles is relatively affordable, but as size increases, so does the price. Using epoxy grout for paving larger areas will be expensive, so slurry porcelain grouts and sweep-in options work out much more cost-effective for the average household. 

Easy to apply

Nobody enjoys grouting. Who needs all that measuring, mixing and crawling about on your hands and knees? Nowadays, applying grout between porcelain tiles can be an effortless task that anyone can do! 


Epoxy grout

Epoxy-based porcelain grouts provide a non-toxic, strong bond that doesn’t require a sealant and is easy to maintain. A mixture of two parts resin to one-part hardener produces a water-resistant bond which is virtually stain-resistant and won’t crack.

However, it’s important to note that improper application can cause severe issues and using epoxy grout is much more expensive than a traditional brush in exterior grouts.

Brush in

A brush-in grout is a dry mix that is easy to use and affordable. All you need to do is sweep it into the joints. It comes in various colours so that it can complement most porcelain patios. 

So if you need something that’s no fuss, a brush in porcelain grout like EasyJoint could be the perfect solution. 


The clue is in the name; these exterior porcelain patio grouts come ready to use; they are cement-based grouts known as slurry grouts. They are poured straight from the tub into the paving joints, and the excess is wiped away.

This type of grout for porcelain prevents weeds and can withstand pressure washing, so it is suitable for high-traffic areas.

What Do I Need To Start Grouting Porcelain Slabs?

  • Grout float or sponge
  • Broom 
  • Garden hose
  • Paddle mixer (if not using ready mix grout) 
  • Tub/bucket
  • Outdoor porcelain paving grout 
  • Porcelain tile protector (makes washing the residue off easier) 
  • Clean water 


Do you need special grout for porcelain tiles?

Porcelain paving slabs are one of the most expensive options for patios, so whilst they do not theoretically require a special grout, using one specifically for porcelain will ensure no unsightly staining or discolouring, which can occur with a standard sand cement mix. 

What do you put between porcelain slabs?

There are several options for filling the joints between porcelain paving stones. You could use traditional kiln dry sand, a jointing compound or porcelain tile grout.

How do you grout a porcelain patio?

Following the manufacturer’s instructions, apply the porcelain patio grout to the spaces between the pavers. Depending on which type you choose, you may need to wet the area, and in some cases, applying a sealant or pointing the grout for a better finish is recommended.

A top tip is to work in manageable areas. Once all the nooks and crannies are filled, you can then wipe away any residue, and it’s best not to walk on the site for 24 hours.

What gap should I leave between porcelain slabs?

According to experts, the spacing between the gaps in your porcelain pavers should be around 5mm wide.

Last Word

We hope this post has made choosing porcelain paving grout easier and given you an understanding of why it’s crucial, especially on an expensive material like porcelain.

Today’s technology and high-performance paving products are created to be highly robust and should last for many years, just like quality external porcelain paving.

Whichever one you choose, it’s essential to ensure the colour complements your stone colour. Follow the manufacturer’s instructions, and our number one tip when applying porcelain paving grout is to work in small areas so the grout doesn’t cure as you are working. 

Wipe away the residue as you go, and in a few hours, you’ll have a porcelain patio to be proud of!

About The Author

John, owner of Easigrass North East for seven years, has lived and breathed landscaping. He evolved from running a leading paving and landscaping business to influencing the industry through online publishing. His real-world experience and hands-on background inform his genuine, insightful guidance for others navigating this space.

Meet The Author - John

The former owner of Easigrass North East, a significant landscaping player known for leading successful paving and garden companies, is now sharing his expert insights.

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