Priming Slurry

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Priming Slurry

Installing Porcelain paving looks at first glance to be as simple as laying any other paving.

A key characteristic of porcelain is an exceptionally low water absorption value, meaning that the paving tile will not draw moisture to the same degree as other paving materials. This is a great benefit when it come to the surface resisting staining and staying looking clean. However, this also means that porcelain paving will absorb almost nothing from the bedding mortar and concequently, without help, porcelain will not form a strong, sustainable bond to the mortar bed. 

Priming Slurry is designed to facilitate the strong bonding of non-pourous / low porous, porcelain and natural stone paving. To create the strong, sustainable bond required, brush primer slurry on the underside of each paving tile/slab just prior to laying. It's easy to apply and doen't add excessive cost to the installation.

Slurry Primer is not just for porcelain. Pavestone strongly reccommends using it to prime natural stone paving flags, just prior to laying, as it will significantly reduce the potential for 'picture frame' stains and patches from the cement in the base mortar being drawn up through to the face of the stone.



A polymer modified, cement based, slurry primer, specifically designed to meet the recommended performance characteristics of BS7533. Manufactured from a controlled blend of specially selected aggregates, cements, and synthetic polymers and only requires the addition of water to produce a high quality priming slurry for use to improve bond strengths of porcelain paving, natural stone setts and cobbles, flags, concrete and clay pavers.

Packaging: 12.5kg Multi-use plastic bucket.


Approximately 15m² per 12.5kg tub.


Application Thickness Unfilled:  1-2mm

Bond Strength:  ≥ 2.0 N/mm² after 28 days

Compressive Strength:  ≥ 35.0 N/mm² 

Flexural Strength:  ≥ 4.5 N/mm²

Working Life @ 20°C:  60 minutes

Complies with BS 7533


Pavestone Priming Slurry Technical Data  Pavestone Priming Slurry Technical Data



The paving sub-base should be prepared as per traditional methods, suitably compacted, free of dust and debris to ensure longevity of the installation.


Remove the inner plastic bag and put to one side.

Add approximately 4 litres of clean water in to the container or a suitable mixing bucket.  

Gradually add in the contents of the plastic bag and mix to a smooth, lump-free, slurry using a paddle mixer attachment in a slow speed electric drill. It is recommended to mix for approximately 3-4 minutes.
A little more water can be added to achieve the slurry consistency if required, however, do not add more water or re-mix once the Slurry Primer starts to set. Use within 1 hour.


The tile or paving slab base should be pre-wetted. The Pavestone Priming Slurry should be applied by stiff brush to a thickness of 1-2mm. 
The priming of the paving slabs should take place immediately after placing the wet,  full mortar bedding in the area beneath where the paving slab is to be placed.

The reverse of the slab should be fully coated up to the outer edges. Any excess slurry  left on the face of the slab should be wiped off immediately.

Pavestone Priming Slurry can also be used to seal dense concrete walling prior to cladding with stone or porcelain wall tiles. When using for this application allow newly built walls to fully dry out prior to proceeding.

Once dry, paint the wall to be cladded with the Slurry Primer and allow to dry. The wall is now ready for cladding using Pavestone Wall and Cladding Adhesive.



Contact Us

To find out more about Priming Slurry, you can call us or email us.

01386 848 650

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