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Mayco Specialty: Cobblestone - Black 118ml

  • Sku - SG-201
  • In Stock

Cobblestone Glazes Available in Black or White

cobblestone bottlesCobblestones create a textured “cobbled” surface when fired. Apply over another glaze and during the firing process, a shattered pattern of raised, irregular chips will emerge. The underlying glaze will appear in the cracks. To create coloured Cobblestones, brush Stroke & …

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  • Description

    Mayco Specialty: Cobblestone - Black 118ml

    Cobblestone Glazes Available in Black or White

    cobblestone bottlesCobblestones create a textured “cobbled” surface when fired. Apply over another glaze and during the firing process, a shattered pattern of raised, irregular chips will emerge. The underlying glaze will appear in the cracks. To create coloured Cobblestones, brush Stroke & Coat® glaze of choice over the white Cobblestone and fire.

    Cobblestones Palette

    Certified AP on-Toxic and Food safe; however not recommended for food surfaces due to surface characteristics.

    Application Recommendations

    The following application recommendations are based upon the original product development intent and use for the product. Information on alternative application methods is listed in the section "Usage Variations and FAQ's". To achieve the cracked pattern (pictured above: Apply Cobblestones over any non-toxic glaze. While Cobblestones can be applied over a previously fired glaze the cracked pattern will become more pronounced if applied on an unfired glaze.

    • Shake for 5-6 seconds before use.
    • Dispense glaze onto a palette (tile, plate, etc.) and apply 2 coats with a broad, soft brush, such as a CB-604 #4 Soft Fan Brush.
    • Apply the second coat while the first coat is still damp: do not allow Cobblestone to dry between coats.
    • Pattern break-up is determined by the application direction of the brush stroke. Large break up heavier application, small breakup lighter application.
    • If application is too light the cobblestone will not break up. Reapplying and touching up will not achieve a break up.
    • Fire to shelf cone 06 or higher.

    Usage Variations & FAQs

    Q: What conditions can influence the performance of Cobblestones?

    A: Application thickness, drying time before firing, firing atmosphere and temperature can all affect the fired results you obtain.

    Q: Any tips for handling ware with unfired, dried Cobblestones on it?

    A: Handle the ware carefully as the dried Cobblestone has a tendency to flake off. Pieces of cobblestone that fall off may be reapplied to the ware using AC-302 Wax Resist If cobblestone flakes off and you reapply cobblestone in that area this area will have a different break up pattern A protective coating of AC-302 Wax Resist can be applied over the cobblestone while the cobblestone is still damp to help alleviate the flaking of the product.

    Q: How can I tint Cobblestones?

    A: SG-202 White Cobblestone can be tinted with One Stroke or Stroke & Coat. Darker pigment colours work best. Always do a test firing. Too much Stroke & Coat colour added will lessen the break up pattern SG-202 White Cobblestone can be made into various colours by applying 1 coat of Stroke and Coat on top of the damp cobblestone.(heavy application of S&C can interfere with the break up).

    Q: Are there any application situations I should avoid?

    A: SG-201 Black Cobblestone will not break up over Matte glazes. If Black Cobblestone is desired on Mattes use SG-202 and apply 1 coat of SC-15 to achieve this effect.

    Label Directions

    A unique textural glaze which forms a raised rectangular chip-like surface. Amount of product application will influence final design. Stir Well. Brush of sponge over any glaze. Handle carefully as dried glaze has tendency to flake. Fire to shelf cone 06 (999° C). NOTE: Firing temperature, length of fire and number of coats will produce colour and surface variations. Do not spray apply without proper personal protective equipment. CONE 6 RESULTS: Turns Glossy

    Click here for Mayco's info on Dinnerware & Food Safety.

  • Delivery & Returns

    Delivery & Returns

    Full information at this link>


    Your carriage charge will be calculated at checkout based upon the volumetric weight of your order, and your location. If for any reason your delivery charge cannot be calculated at checkout, you will see a message explaining that our sales team will contact you with a quote. You will be under no obligation to accept this and have the right to cancel your order. 

    We deliver throughout the UK and overseas using a trusted third-party distribution network. Delivery is to kerbside or letterbox only.

    Due to exceptional demand, please allow up to 10 working days for deliveries. Our Nextday service is suspended. Collection from our Stoke-on-Trent warehouse is currently only possible by placing your order by phone +44(0)1782 219816. Although carriers will endeavour to deliver within the agreed timeframe, unexpected delays due to weather conditions, breakdowns, traffic and other factors may cause some disruption to schedules.


    We are bound by the terms and conditions of our carriers therefore we cannot pursue a claim if these instructions are not followed:- 

    Special Delivery Conditions: You must inform us at point of order of any special conditions such as restricted access or opening times, otherwise you will be liable for any consequential costs incurred.

    Damage/Missing Items: You must check your delivery carefully before providing a ‘clear’ signature to the driver. Outward signs of damage/disruption to packaging must be noted alongside your signature. You must notify Potclays of damage or missing items within 24 hours of delivery.


    Returned Goods (Non-faulty): Subject to our prior consent having been obtained, products can be returned to us in an unused condition within 30 days of invoice date.  An administrative charge will be levied of 10% of the nett value plus transport, but subject to a minimum charge of £ 2.00. 

    Returned Goods (Faulty): If merchandise is returned because of some defect or due to error on our part, full credit/refund will be given.  However, customers must contact us in advance so that making methods and user error can be ruled out. 

    Read more about returns >

If you have any questions contact us now

If you have any questions about our range of products, please do not hesitate to get in touch with Potclays. Our team of experts will be more than happy to answer any questions you may have.

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