Sunny Mustard - Slim Line

We don't keep any stock in London. All stocked tiles are stored at our warehouse, which is not open to the public due to health and safety regulations.

We do not accept payments over the phone. Orders can be placed on our website or via a payment link provided by our team.

Yes, we do! Our London showroom is open Monday to Friday, from 10 AM to 6 PM. You’re welcome to visit us at Unit 11, 2 Ash Grove, London, E8 4RH—no appointment needed.

Yes, please refer to our product-specific Installation and Maintenance Guides on our website

We do not offer installation services.

No, we manage all shipping and orders directly.

Yes! Otto Tiles offers a trade program. To register:

Sign up on our website with your business email at My Account

Then complete the Professional Account Application

Call us at 020 3488 9317 (Option 1 for sales, Option 2 for samples/support) or email info@ottotiles.co.uk.

We recommend adding 10–15% overage to your order to account for cuts, fitting, and potential breakage during installation.

Trade accounts receive 10% off full-priced items only.

Trade account holders are entitled to 2 free samples.

The easiest way is through our website. Delivery typically takes 1–2 business days within the UK. For international sample orders, please contact us via email.

Most are dispatched with next-day delivery service.

Please send us photos of the damage. We will investigate and either refund or replace the sample.

Yes, you can change the delivery date with a notice period of 48 hours. Our standard delivery window is between 09:00 and 17:00 at your delivery address. If you require a specific time slot, there will be an additional charge of £15.00 + VAT.

Our warehouse is not open to the public. However, we can check with the depot if special collection is possible—please contact us in advance.

We deliver Monday to Friday only

Yes, we do! For international orders, please email us with your delivery address and the quantity of tiles required, and we’ll provide you with a quote.

If the tiles you ordered are already in stock, we can store your order free of charge for 4 weeks. After that, a fee of £5 + VAT per week applies.

Returns are only accepted for UK-stocked tiles and require approval. Bespoke and made-to-order products are non-refundable. Items must be securely palletized and in original condition. Shipping and handling fees are non-refundable.

 Our finance department processes refunds in the next payment cycle after approval.

Yes, our cement tiles are suitable for underfloor heating systems. Make sure to turn off the heating at least 12 hours before installation and allow a minimum 3 mm grout gap. Once installed, let the tiles fully cure before reactivating the heating gradually.

Yes, Otto cement tiles are suitable for installation around fireplaces, such as fireplace surrounds and hearth-facing walls. However, they are not recommended for use inside fireboxes (the interior of the fireplace where direct flame and extreme heat occur), as this may cause damage over time.

No. Cement tiles are not suitable for submerged or continuously wet applications such as pools, fountains, or water features. Their porous nature makes them vulnerable to long-term water absorption, even when sealed.

Yes, Otto cement tiles are highly versatile. They can be used on walls, floors, and in high-traffic areas, both indoors and outdoors. They are also suitable for kitchen backsplashes, bathrooms, showers, and fireplace surrounds (excluding inside fireboxes). However, these tiles are not recommended for use in pools or fountains.

Cement tiles can stain if not properly sealed. This is why sealing before and after grouting is essential. During installation, only grout small sections (2–4 sqm) at a time and clean immediately with a damp sponge. If haze or residue is left on the surface, it can often be removed with non-acidic tile cleaners—but be sure to rinse thoroughly. Grout staining typically occurs only if proper sealing and installation practices aren’t followed.

Absolutely. Due to their porous nature, cement tiles must be sealed both before and after grouting. We strongly recommend using Lithofin MN Stain Stop, a transparent penetrating sealant that won’t alter the tile’s appearance. Apply the sealant to a clean, dry surface using a cloth, brush, or sponge. Always test on a small area first. If water does not bead on the surface, additional sealing may be required. For high-traffic areas or bathrooms, we advise resealing once a year.

For regular cleaning, sweep or vacuum gently and mop with clean water and a pH-neutral cleaner. Avoid harsh chemicals, bleach, vinegar, or acidic products. After shower use, squeegee the tile surfaces to prevent limescale or soap scum buildup. For deeper stains, a wet grinding machine with 400-grit sandpaper can be used to lightly polish the surface—just be sure to reseal afterward.

Otto cement tiles are handmade using a mix of natural pigments, cement, recycled marble granules, and marble powder. Unlike ceramic or porcelain tiles, they are not fired in a kiln—making them far more eco-friendly. What makes our cement tiles stand out is their thick 7–8mm colour layer, which allows for sanding and refinishing over time. The tiles are designed to look authentically handmade, with slight imperfections and variations that enhance their artisanal character.

We don't keep any stock in London. All stocked tiles are stored at our warehouse, which is not open to the public due to health and safety regulations.

We do not accept payments over the phone. Orders can be placed on our website or via a payment link provided by our team.

Yes, we do! Our London showroom is open Monday to Friday, from 10 AM to 6 PM. You’re welcome to visit us at Unit 11, 2 Ash Grove, London, E8 4RH—no appointment needed.

Yes, please refer to our product-specific Installation and Maintenance Guides on our website

We do not offer installation services.

No, we manage all shipping and orders directly.

Yes! Otto Tiles offers a trade program. To register:

Sign up on our website with your business email at My Account

Then complete the Professional Account Application

Call us at 020 3488 9317 (Option 1 for sales, Option 2 for samples/support) or email info@ottotiles.co.uk.

We recommend adding 10–15% overage to your order to account for cuts, fitting, and potential breakage during installation.

Trade accounts receive 10% off full-priced items only.

Trade account holders are entitled to 2 free samples.

The easiest way is through our website. Delivery typically takes 1–2 business days within the UK. For international sample orders, please contact us via email.

Most are dispatched with next-day delivery service.

Please send us photos of the damage. We will investigate and either refund or replace the sample.

Yes, you can change the delivery date with a notice period of 48 hours. Our standard delivery window is between 09:00 and 17:00 at your delivery address. If you require a specific time slot, there will be an additional charge of £15.00 + VAT.

Our warehouse is not open to the public. However, we can check with the depot if special collection is possible—please contact us in advance.

We deliver Monday to Friday only

Yes, we do! For international orders, please email us with your delivery address and the quantity of tiles required, and we’ll provide you with a quote.

If the tiles you ordered are already in stock, we can store your order free of charge for 4 weeks. After that, a fee of £5 + VAT per week applies.

Returns are only accepted for UK-stocked tiles and require approval. Bespoke and made-to-order products are non-refundable. Items must be securely palletized and in original condition. Shipping and handling fees are non-refundable.

 Our finance department processes refunds in the next payment cycle after approval.

Yes, they are. If installing over underfloor heating, the heating system must be turned off at least 12 hours prior to laying the tiles. A 3 mm grout gap should be left to accommodate expansion. Once installation and grouting are complete, allow for a full curing period before turning the heating back on gradually.

Yes, Slim Line cement tiles can be used around fireplaces, similar to our standard cement tiles. They provide a beautiful handcrafted look for hearth surrounds and fireplace wall features. However, like standard cement tiles, they are not suitable for installation inside fireboxes.

Yes, they are. Our Slim Line tiles are engineered for strength and versatility. They can be used on floors and walls in both residential and commercial settings, including kitchens, bathrooms, hallways, showers, and wet areas. As with all cement tiles, a proper substrate and professional installation are crucial to ensuring long-term durability.

No. Slim Line tiles are also not suitable for submerged areas such as pools or fountains. While durable and resistant to surface wear, they are porous and can absorb water over time, even with sealing. They can be used in surrounding areas, such as pool decks or waterline borders, when finished with a specialized pool-grade sealant

Yes, if not properly sealed or cleaned during installation. Always seal tiles before applying grout, especially if using dark grout. Grout haze or staining can occur if excess grout is not removed immediately. Avoid letting grout dry on the surface, and clean as you go in small areas (2–4 sqm). If grout hardens, use a non-acidic cleaner and rinse thoroughly with a damp sponge.

Yes, sealing is essential. Like all cement tiles, Slim Line tiles are porous and must be sealed both before and after grouting. We recommend Lithofin MN Stain Stop, which is a transparent penetrating sealer that won’t alter the tile’s natural look. Always apply to a clean, dry surface and test a small area first. A properly sealed tile will bead water on the surface; if not, another coat is needed. Re-sealing is recommended annually for high-use areas.

Clean regularly with water and a pH-neutral cleaner. Avoid acidic or abrasive products. In showers or wet areas, squeegee surfaces after each use to prevent soap and limescale buildup. Any stubborn stains can be addressed with a wet grinding machine (using 400-grit sandpaper), but tiles must be resealed afterward. Annual sealing is typically sufficient, though more frequent reapplication may be necessary in high-moisture zones like showers.