Cornerstone Marine Mix Mortar

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Mortar designed for use in tidal zones and similar applications with regular contact with water. Available in a 25kg bag.


SKU: N/A Category: Brand: Cornerstone


Designed for use in tidal zones and similar applications where the substrate may be submerged or in regular contact with water, especially work constrained by tidal zones, Cornerstone Marine Mix offers an accelerated setting time whilst maintaining all of the virtues of a pure NHL mortar.

The improved set is derived from the addition of Prompt which offers the security of a false set and does not compromise or alter the mechanical properties of the NHL designation. Whilst the mortar undertakes a false set to offer security, the NHL still requires full hydration and adequate care of the mortar is still required.


Cornerstone Marine Mix is made-to-order, with an estimated lead time of up to five working days.

As with any natural product, variations in colour, texture and shape may occur. In addition, images may vary slightly from actual products due to these natural variations and screen resolution. For the best consistency, ensure to acquire a sufficient amount of material with your order to avoid batch-to-batch variation.

See the Technical Data and Documentation section for more detailed product information, application guidance and datasheets. Always read the available datasheets and guidance before use. Each project is unique; always seek professional advice before undertaking a project.

When working with lime, an alkaline material, always ensure you wear the appropriate PPE. Browse our range of tools and PPE to get started.

Always read the available datasheets and documentation before use.

Pallet orders with Palletforce Economy are typically dispatched from Cornish Lime within 1-2 business days, providing your item is in stock and not made-to-order. Once dispatched, Palletforce will deliver your order within 3-5 business days, depending on your location. Please ensure that your site can accommodate articulated lorries or similar-sized vehicles.

Local Delivery
The Cornish Lime team provides local delivery with a 12-tonne vehicle with a crane to assist with unloading. You will be contacted by phone to arrange delivery and ensure your site can accommodate our vehicle.

APC Parcel Courier
Orders shipped by APC parcel courier are typically shipped the next business day and arrive within 2-3 business days, providing your item is in stock and not made-to-order. APC will contact you via email with delivery information, and orders can be tracked on the APC website.

Premium or Expedited Service
For a premium or expedited delivery service, please get in touch to discuss if this option is available for your order.

For further information, see our delivery information page.


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