• ProJoint™ Porcelain Primer  

    A high performance priming slurry for porcelain paving


    The ProJoint™ Porcelain Primer is an ultra-high polymer and fibre modified flexible primer with excellent workability and adhesion properties. As a single coat fast application, ProJoint™ Porcelain Primer promotes adhesion and control suction on difficult substrates such as porcelain, concrete, ceramic tiles, paving slabs or setts.

    Using the ProJoint™ Porcelain Primer enables the porcelain slabs or setts to be laid on a sand and cement bedding.


    The powdered primer is available either tubbed with two 10kg bags to allow the bucket to act as the ideal mixing vessel with the simple addition of water or in loose 10kg bags* for a more economical option.

    *Only available in full pallets of 100 units

Video application instructions

Technical data sheet


Nexus Pro Systems Ltd The techical information given on our product is based on our product is based on data obtained by our own research and is considered accurate. However no liability is accepted for any loss or damage arising directly or indirectly from the use of our products or from the information given in publications. Prospective users should therefore satisfy themselves by appropriate trials that the product is suitable for the intended use.

FAQ's

  1. The instructions say to allow the primer to dry before application, is this correct?
    Yes, always let the primer dry completely before laying your porcelain slabs. This ensures the best bond between the slabs and the bedding mortar.
  2. Once the primer is applied and dried, how long do I have to lay the slabs?
    You may lay the slabs right after the primer has dried, right up to 14 days after application of the primer.
  3. Can I really prime slabs up to 14 days before laying?
    Yes you can! Just ensure the primed side is protected from weathering and dirt.
  4. How does this primer differ from other slurry primers?
    ProJoint Porcelain Primer is specially designed for porcelain paving, offering superior adhesion and durability compared to standard slurry primers.
  5. How long does it take for the primer to dry?
    The primer typically dries in 30–60 minutes, depending on the weather.
  6. Can the primer be used on natural stone?
    Yes, although it’s optimized for porcelain, it can also be used on natural stone.
  7. Do I mix a full bag at once?
    Only mix what you need. If you’re working on a small area, you can mix less to avoid waste.
  8. What is the coverage?
    One bag of primer typically covers 10-13m², depending on the application thickness.

Key facts

  • Single coat application to the underside of paving
  • Enables the paving to be laid on sand and cement bedding
  • Excellent workability and adhesion properties
  • Suitable for brush or roller application
  • Can be applied in low temperatures
  • Suitable for internal or external use
  • Two x 10kg bags contained within the lidded mixing tub

Approximate coverage per 20kg tub:  27.5m2 depending on the application method and paving porosity.

Product: Porcelain Primer
Product code:  PP20
Pack size: 20kg (2 x 10kg bags)
Pallet quantity: 50 (can be a combination of product/colour)
  • How many Porcelain Primer tubs do you need for your project?

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