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Kaji Border is the new name for Koyohen Border

Introducing the Kaji Border tile, a remarkable creation crafted by one of Mittsu’s master ceramicists using traditional Japanese techniques. Each porcelain tile showcases the beauty of fine craftsmanship, offering a truly artisanal product. The deep, rich tones of the Koyohen tile, combined with its naturally occurring glaze variations, make it an exceptional choice for those seeking a blend of heritage and sophistication.

What sets the Kaji Border tile apart is its distinct glaze finish, which offers a mesmerising interplay of light and shadow. The glaze is carefully applied to create a dynamic, almost tactile surface that reflects its natural surroundings, enhancing the depth of each tile. This subtle texture gives the tile a multi-dimensional quality, making it not only visually appealing but also stimulating to the touch. The glaze’s variations in tone and finish—from glossy to semi-matte—ensure that no two tiles are the same, adding a layer of uniqueness to any space.

The Kaji Border tile features an intriguing and sympathetic aesthetic that’s rooted in its earthy, natural palette. Its slightly uneven texture evokes the feel of handcrafted pottery, while maintaining the durability and precision of modern ceramic work. This versatile tile is equally at home on walls or floors, providing an elegant yet timeless touch to both residential and commercial projects. Whether you’re seeking to add texture to a bathroom or bring an artistic element to a kitchen, the Kaji Border is designed to enhance any space with its authentic craftsmanship, rich textures, and subtle beauty.

Note - We also have stock in our German warehouse if there is not enough of the colour you need here. Use the chat function at the bottom right. 

You can see many installation images here.

Download the Floor Slip Certificate here.

Superclean Grout is an Anti-Mould Grout from master ceramicists, INAX of Japan.

This grout has been developed to exceed the exacting demands for cleanliness and hygiene of the Japanese people.

Moisture and dirt penetrate into conventional cement grout, causing mould growth on the surface. Superclean Grout transforms the property of grout particles to hydrophobic, dramatically reducing the penetration of moisture into the grout and preventing the grout from holding dirt and growing mould.

It's one of the few available in Europe that passes the high standard of Anti-Stain, Anti-Bacterial and Anti-Fungal of ISO Standard - ISO22196. 

Shipping & Returns

We offer three main shipping categories: Stock from Japan, Stock from Europe, and Samples.

European Stock

These tiles make up a smaller portion of our range but account for most of our sales by volume.

Stock is held in Germany and the UK, with availability clearly marked. Unless otherwise stated, stock is located in Germany.

To ensure safe delivery, we only offer pallet deliveries for these tiles.

Orders are shipped same-day or next-day, depending on confirmation time.

Delivery time varies by location but is typically within 7–10 days.

Our website provides clear shipping options and costs before requiring payment.

If you’re in a remote location, please contact us in advance to confirm shipping rates.


Stock from Japan (Pre-Orders)

We offer two shipping options for pre-ordered tiles from Japan:

1. Dedicated Sea Freight

Your order is shipped individually as soon as it’s ready.

The process includes 5 weeks at sea plus customs and local handling, totalling 10–14 weeks.

2. Shared Sea Freight

Your order is combined with others before shipment to our German warehouse.

We typically have six shipments per year.

Once dispatched, delivery follows the same timeline as Dedicated Sea Freight.

UK orders are transported to our UK warehouse before final delivery.


Samples

All sample orders are managed by our UK warehouse.

Shipping via DPD Next Day Service (UK).

European deliveries take 3–5 days.


Returns

We accept returns for bulk stock items (not samples). However, due to the high cost of return shipping, we encourage you to make an informed decision before ordering.

Return Policy

Items from Japan (Custom Orders) are non-returnable.

To initiate a return, email us at info@mittsugroup.com within 14 days of receiving your order.

The return must be sent to the warehouse it was dispatched from within the following 14 days.

Tiles must be returned in their original, unopened, and undamaged condition. Pallet shipping is required—courier shipments often result in damage.

Refunds will be issued within 14 days of receiving the returned items.


For further details or assistance, please contact us.

Welcome to Mittsu – Your Source for Authentic Japanese Tiles

Japanese tiles are renowned for their beauty, quality, and craftsmanship. If a stunning tiled bathroom led you here, you might now be feeling a little overwhelmed by the choices—but don’t worry, we’re here to help!


Who is Mittsu?

Mittsu is a privately owned company specialising in authentic Japanese tiles. We only sell tiles made in Japan, ensuring superior quality and craftsmanship.

Unlike other businesses offering “Japanese-style” tiles, our products are genuinely made in Japan, reflecting the rich heritage and artistry that define Japanese ceramics. Learn more about what makes Japanese tiles special.


How to Choose the Right Tile

Search by name on our website.

Browse our collections for inspiration.

Follow us on Instagram for design ideas.


Box Sizes & Pricing

Since we source tiles from multiple Japanese manufacturers, box sizes vary—ranging from 0.3m² to 2m². To keep things transparent, each tile page displays:

Price per square meter (for easy comparison).

Price per box (as we only sell full boxes).

For example, our Koyohen Border tile costs more per box than Ka-Bu, but it covers 1.8m² per box compared to Ka-Bu’s 1m², making it a lower cost option per square meter.


Stock Availability

We keep around 50 tile variations in our German warehouse, ready for immediate shipping.

Some of our most popular tiles are also available in the UK warehouse—look for products labeled (UK Stock) when ordering from the UK.

Despite our best efforts, demand can sometimes outpace supply, so if a tile is out of stock, feel free to contact us for alternatives or restock timelines.


Pre-Orders (Stock from Japan)

For tiles not currently in our European stock, we offer two shipping options:

1. Dedicated Sea Freight – Your order is shipped individually as soon as it’s ready.

2. Shared Sea Freight – Your order is combined with others for more cost-effective shipping.

Our website allows you to order tiles from Japan with the understanding that shipping times vary. If you’re interested in a specific tile that’s out of stock, please contact us, and we’ll be happy to assist.


Samples

While we strive for accurate photography, tile colors may appear differently on screens. We highly recommend ordering samples to ensure you’re getting exactly what you expect.

You can browse our sample collection or search by tile name and select the sample option.

We have over 400 sample variations ready to ship.

Sample orders within the UK are shipped via DPD Next Day Service, with European deliveries taking 3–5 days.


Why Do We Charge for Samples?

1. To minimize waste – Charging a small fee prevents unnecessary orders.

2. To offset costs – Sample stocking and processing are expensive.

However, when you place a tile order for your project, we will refund the cost of up to 5 samples upon request.


Who We Serve

We cater to everyone—from private homeowners needing a single box for a kitchen backsplash, to leading architectural firms designing luxury hotels.

If you work in construction or tile specification, please email us at sales@mittsugroup.com.

We ship all over Europe and can assist customers in other locations upon request.

Unfortunately, due to contractual reasons, we cannot ship to North America.


Personal Service

At Mittsu, we take pride in our personalised approach. When you contact us, you’ll be speaking directly with our Director, Ian. While our team continues to grow, all customer inquiries are handled personally by him to ensure you receive the best possible guidance.

Kaji Border

SKU: CPT-KB-M-1/UK
Colour:
Price per m2

Each of our tiles has a unique coverage per box, ranging from 0.2 to 2m2. This price allows you to compare a like for like cost.

£122.22
Price per box
Sale price£220.00
Availability

Stock Availability & Shipping. Stocked Locally: Ships from the UK or Germany for faster delivery. Order from Japan: Imported from Japan just for you—please check our Shipping Page for details. Made to Order: Lead times and minimum order quantities are listed in the product description.

Stocked Locally
Stock Status 122m2
Tiles
Grout
Price

Order a Sample

Kaji Border Sample

SKU: CPT-KB-M-1/sample

m2 per Box 1.8
Items per Box

This is how many sheets or individual tiles are in a box.

20
Items per m2

This is how many sheets or individual tiles are needed for 1m2

11.1
Tile Size (mm) 144x19x7.5
Joint Size (mm)

This is the size of the gap between tiles on a sheet or an assumed size for loose tiles. 

6
Item Sheets
Sheet Size (mm) 300x300
Application Indoor Wall , Indoor Floor, Wet Wall, Wet Floor, Outdoor Wall, Outdoor Floor, Pool, Fireplace, and Frost Proof
Country of origin Japan
Material Porcelain
Surface Glazed
In Box Colour Variation Moderate
Shine High
In Box Texture Variation Moderate
Colour Fading Zero
Surface Crackle Low

Kaji Border is the new name for Koyohen Border

Introducing the Kaji Border tile, a remarkable creation crafted by one of Mittsu’s master ceramicists using traditional Japanese techniques. Each porcelain tile showcases the beauty of fine craftsmanship, offering a truly artisanal product. The deep, rich tones of the Koyohen tile, combined with its naturally occurring glaze variations, make it an exceptional choice for those seeking a blend of heritage and sophistication.

What sets the Kaji Border tile apart is its distinct glaze finish, which offers a mesmerising interplay of light and shadow. The glaze is carefully applied to create a dynamic, almost tactile surface that reflects its natural surroundings, enhancing the depth of each tile. This subtle texture gives the tile a multi-dimensional quality, making it not only visually appealing but also stimulating to the touch. The glaze’s variations in tone and finish—from glossy to semi-matte—ensure that no two tiles are the same, adding a layer of uniqueness to any space.

The Kaji Border tile features an intriguing and sympathetic aesthetic that’s rooted in its earthy, natural palette. Its slightly uneven texture evokes the feel of handcrafted pottery, while maintaining the durability and precision of modern ceramic work. This versatile tile is equally at home on walls or floors, providing an elegant yet timeless touch to both residential and commercial projects. Whether you’re seeking to add texture to a bathroom or bring an artistic element to a kitchen, the Kaji Border is designed to enhance any space with its authentic craftsmanship, rich textures, and subtle beauty.

Note - We also have stock in our German warehouse if there is not enough of the colour you need here. Use the chat function at the bottom right. 

You can see many installation images here.

Download the Floor Slip Certificate here.

Superclean Grout is an Anti-Mould Grout from master ceramicists, INAX of Japan.

This grout has been developed to exceed the exacting demands for cleanliness and hygiene of the Japanese people.

Moisture and dirt penetrate into conventional cement grout, causing mould growth on the surface. Superclean Grout transforms the property of grout particles to hydrophobic, dramatically reducing the penetration of moisture into the grout and preventing the grout from holding dirt and growing mould.

It's one of the few available in Europe that passes the high standard of Anti-Stain, Anti-Bacterial and Anti-Fungal of ISO Standard - ISO22196. 

Shipping & Returns

We offer three main shipping categories: Stock from Japan, Stock from Europe, and Samples.

European Stock

These tiles make up a smaller portion of our range but account for most of our sales by volume.

Stock is held in Germany and the UK, with availability clearly marked. Unless otherwise stated, stock is located in Germany.

To ensure safe delivery, we only offer pallet deliveries for these tiles.

Orders are shipped same-day or next-day, depending on confirmation time.

Delivery time varies by location but is typically within 7–10 days.

Our website provides clear shipping options and costs before requiring payment.

If you’re in a remote location, please contact us in advance to confirm shipping rates.


Stock from Japan (Pre-Orders)

We offer two shipping options for pre-ordered tiles from Japan:

1. Dedicated Sea Freight

Your order is shipped individually as soon as it’s ready.

The process includes 5 weeks at sea plus customs and local handling, totalling 10–14 weeks.

2. Shared Sea Freight

Your order is combined with others before shipment to our German warehouse.

We typically have six shipments per year.

Once dispatched, delivery follows the same timeline as Dedicated Sea Freight.

UK orders are transported to our UK warehouse before final delivery.


Samples

All sample orders are managed by our UK warehouse.

Shipping via DPD Next Day Service (UK).

European deliveries take 3–5 days.


Returns

We accept returns for bulk stock items (not samples). However, due to the high cost of return shipping, we encourage you to make an informed decision before ordering.

Return Policy

Items from Japan (Custom Orders) are non-returnable.

To initiate a return, email us at info@mittsugroup.com within 14 days of receiving your order.

The return must be sent to the warehouse it was dispatched from within the following 14 days.

Tiles must be returned in their original, unopened, and undamaged condition. Pallet shipping is required—courier shipments often result in damage.

Refunds will be issued within 14 days of receiving the returned items.


For further details or assistance, please contact us.

Welcome to Mittsu – Your Source for Authentic Japanese Tiles

Japanese tiles are renowned for their beauty, quality, and craftsmanship. If a stunning tiled bathroom led you here, you might now be feeling a little overwhelmed by the choices—but don’t worry, we’re here to help!


Who is Mittsu?

Mittsu is a privately owned company specialising in authentic Japanese tiles. We only sell tiles made in Japan, ensuring superior quality and craftsmanship.

Unlike other businesses offering “Japanese-style” tiles, our products are genuinely made in Japan, reflecting the rich heritage and artistry that define Japanese ceramics. Learn more about what makes Japanese tiles special.


How to Choose the Right Tile

Search by name on our website.

Browse our collections for inspiration.

Follow us on Instagram for design ideas.


Box Sizes & Pricing

Since we source tiles from multiple Japanese manufacturers, box sizes vary—ranging from 0.3m² to 2m². To keep things transparent, each tile page displays:

Price per square meter (for easy comparison).

Price per box (as we only sell full boxes).

For example, our Koyohen Border tile costs more per box than Ka-Bu, but it covers 1.8m² per box compared to Ka-Bu’s 1m², making it a lower cost option per square meter.


Stock Availability

We keep around 50 tile variations in our German warehouse, ready for immediate shipping.

Some of our most popular tiles are also available in the UK warehouse—look for products labeled (UK Stock) when ordering from the UK.

Despite our best efforts, demand can sometimes outpace supply, so if a tile is out of stock, feel free to contact us for alternatives or restock timelines.


Pre-Orders (Stock from Japan)

For tiles not currently in our European stock, we offer two shipping options:

1. Dedicated Sea Freight – Your order is shipped individually as soon as it’s ready.

2. Shared Sea Freight – Your order is combined with others for more cost-effective shipping.

Our website allows you to order tiles from Japan with the understanding that shipping times vary. If you’re interested in a specific tile that’s out of stock, please contact us, and we’ll be happy to assist.


Samples

While we strive for accurate photography, tile colors may appear differently on screens. We highly recommend ordering samples to ensure you’re getting exactly what you expect.

You can browse our sample collection or search by tile name and select the sample option.

We have over 400 sample variations ready to ship.

Sample orders within the UK are shipped via DPD Next Day Service, with European deliveries taking 3–5 days.


Why Do We Charge for Samples?

1. To minimize waste – Charging a small fee prevents unnecessary orders.

2. To offset costs – Sample stocking and processing are expensive.

However, when you place a tile order for your project, we will refund the cost of up to 5 samples upon request.


Who We Serve

We cater to everyone—from private homeowners needing a single box for a kitchen backsplash, to leading architectural firms designing luxury hotels.

If you work in construction or tile specification, please email us at sales@mittsugroup.com.

We ship all over Europe and can assist customers in other locations upon request.

Unfortunately, due to contractual reasons, we cannot ship to North America.


Personal Service

At Mittsu, we take pride in our personalised approach. When you contact us, you’ll be speaking directly with our Director, Ian. While our team continues to grow, all customer inquiries are handled personally by him to ensure you receive the best possible guidance.