Green Garden Paving FAQ Advice and information on some of our most frequently asked questions regarding natural stone and porcelain paving.

Porcelain Paving Frequently Asked Questions

Last Updated 24th September 2020

The frequently asked questions below list the common queries we receive regarding our porcelain tile ranges. Some subjects are discussed in more depth in our articles section. For more information regarding installation and maintenance see the External Porcelain Installation and Fact Sheet.

Can't see the answer to your question? Email us to get more information or give us a call on 0333 320 70 36.

What is porcelain paving?

Porcelain paving is identical to indoor porcelain tiles but have two key enhancements; they should be double the thickness (18-20mm) and have a slip resistant surface to make them suitable for external use. They are available in a range of designs and can even replicate the look of natural stone, wood or cement. Porcelain paving is frost proof, stain resistant, colourfast and fade proof. Is is extremely hard wearing and resilient.

How is porcelain paving made?

Porcelain is a man-made material created by pressing and firing natural clays and minerals at very high temperatures (up to 1300°C) until they undergo a process called vitrification which is a transformation into a non-crystalline amorphous solid, a type of glass. Vitrification is what makes the product so hard and impermeable to water.

What is porcelain paving made from?

Naturally occurring clays, quartz, feldspar and silica are processed into a fine powder to create the body of a porcelain tile.

Are the tiles slip resistant?

Our external tiles all meet the R11 slip resistant standard and our internal meet R10. Please read our more detailed information on slip resistance.

Can I buy a sample?

No, we will give you one free! We will send out up to 3 cut samples free.

Can I link Indoor and Outdoor grout lines?

Our Valverdi tiles are a range of co-ordinating indoor and outdoor porcelain that lets you do this, although it will not always be possible to link grout lines..

Can I put a fire pit directly over 20mm porcelain?

All our 20mm tiles are fired to over 1350 deg C and can withstand a great deal of heat. However, a fire pit can heat a small part of the tile while leaving other parts relatively cool. This can create thermal stress which could crack the tile. While unlikely it is best to protect the area immediately under the fire pit from localised heating

Can I use your porcelain round a swimming pool?

Yes, our external porcelain tiles are all suitable for swimming pool surrounds and will not be affected by pool chemicals.

Can Valverdi and PorcelPave be used on external balconies and roof terraces?

Absolutely! By using support pedestals they can quickly and easily transform your roof terrace or balcony.

Can you lay 10mm porcelain outdoors?

While it is the perfect material for outdoor use, not all porcelain tiles can be used outside. 10mm thick porcelain tiles are not recommended for external use, as they are unlikely to withstand external abuse and harsh weather conditions. All our external porcelain has suitable slip resistance, whereas most thinner porcelain does not have a slip resistance suitable for external use.

Can you put your porcelain tiles on pedestals?

Yes, all our 2cm porcelain can be installed on adjustable pedestals of our own Adped system fo domestic and light commercial area.

Do Valverdi or PorcelPave tiles scratch?

Our porcelain is incredibly hard and very difficult to scratch. Do not take our word for it, order a sample and try to scratch it with a 6" nail! To cut the tiles you have to use a diamond cutting tool, anything else is simply not hard enough.

Do you need to seal PorcelPave or Valverdi tiles?

No, they are impervious and do not require sealing either indoors or outdoors.

Do your tiles have a guarantee?

Both Valverdi and PorcelPave have guarantees which is available to view on the individual tile resource tab.

How accurate is the sizing of our tiles?

All our tiles are rectified which means they are exactly the same size within a batch. Some specialist elements may be non-rectified which could vary in size, but these are clearly marked as non-rectified. Beware of suppliers describing their tiles as 'press rectified' or similar as these may not be rectified.

How easy are they to keep clean?

Our porcelain tiles are all impervious and so they shrug off dirt and stains. However, they are not self cleaning. Generally a sweep or squeegee after rain will remove all the dirt. Over winter dried fruits or rotting leaves can leave marks which can be removed with alkaline cleaners such as Lithofin Intensive cleaner. Rust marks or shoe scuffs are best removed with an acidic cleaner such as Cillit Bang. Always follow the instructions. Our porcelain is acid resistant and will not be affected by a jet wash. All our tiles are checked for cleanability.

How good are your porcelain tiles?

All our PorcelPave and Valverdi tiles are manufactured in state of the art production facilities in Europe. All our tiles are thoroughly checked to ensure they meet exacting European standards. Our knowledge of the market and technical issues ensures you will only receive the best quality of product possible.

How long will porcelain last?

Our porcelain is incredibly hard and when laid correctly will last a lifetime. For example, through body porcelain wears so well it could last thousands of years!

How slip resistant are your porcelain tiles?

There is a balance to strike on slip resistance. If you make a tile very slip resistant it can be hard to clean, and if it gets dirty it can actually become more slippery! All our internal porcelain tiles have a slip resistance of R10, easy to clean but resistant enough for normal internal installations. Externally we check all our tiles for clean-ability and have R11 slip resistance. For more details check out our Slip Resistance article.

What is SteriTile?

Some of the Valverdi Indoor tiles have metallic ions added to their glaze. These ions bind with the bacteria's DNA stopping them from reproducing. This kills 99.99% of the bacteria that land on these tiles for the lifetime fo the tile.

What is the difference between rectified and non rectified tiles?

When our porcelain tiles are made they are fired at very high temperatures in advanced kilns. However, when they leave the kiln the tiles will all be slightly different sizes. All our Valverdi and most of our PorcelPave are then ground down to exactly the same size. This is called rectification. This allows you to lay the tiles with a narrower joint and achieve a very clean and contemporary look.

What is the difference between the PorcelPave and Valverdi brands?

All Valverdi tiles have a corresponding co-ordinating internal tile, while PorcelPave only sells the 2cm external products.

What is the minimum grout width?

If the tile is rectified it is possible to reduce the joint to 2mm internally or 4mm externally. We do not recommend grout joints less than 4mm externally as it becomes too hard to fill the joint correctly. If the tiles are un-rectified then grout joints of 6-10mm will be required.

Why is porcelain the best internal and external flooring material?

Our porcelain is extremely hard wearing and easy to clean. Marks and scuffs can always be removed and they are very resistant to staining and are totally fade and frost proof. Our external tiles have enhanced slip resistance as standard. Internally the dense nature of porcelain makes them ideal for under floor heating systems, as the density is perfect for temperature control and retention.

Will a hard winter damage Valverdi or PorcelPave outdoor tiles?

No, they are completely frost proof.

Will Valverdi or PorcelPave porcelain fade?

No, the products are completely colour-fast

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